Origin locator view



scolv: OriginLocatorView Location tab with event and phase information

scolv picker

scolv: OriginLocatorView phase picker with waveforms and phase information

scolv picker

scolv: OriginLocatorView Event tab with all origins

scolv picker

scolv: OriginLocatorView amplitude waveform review with station magnitudes

scolv is the main interactive tool to revise or review origin and event information. It thus provides the entire functionality to analyze earthquake parameters:

  • Phase picks and arrivals in diagrams and waveforms

  • Hypocenter location and source time with uncertainties

  • Focal mechanism from first-motion polarities

  • Magnitudes in diagrams and waveforms

  • Origin status and certainty

  • Event association

  • Event type

The main scolv window is divided into 4 perspectives (tabs) from which external windows can be opened:

  • Location tab: Details of the selected origin with

    • Phase picker (external window): Review waveforms for phase picking including polarities, uncertainties, spectra and spectrograms,

    • Extended commit (external window): Commit solution with additional options.

  • Magnitudes tab: Magnitude details of the selected origin with

  • Event tab: Origins and focal mechanisms referenced by the selected event.

  • Events tab: Table of event parameters of the loaded events with interactive filtering of database requests and loaded events.

Modes of Operation

scolv can be operated in 2 modes:

  • Connected to the messaging where all event and station inventory parameters are received from the messaging or the database and updated in real time. New or updated parameters can be commited to the messaging. Simply start scolv without any argument or connect to a specific host providing the messaging, e.g.:

    scolv -H [host]
  • Offline without messaging where all event and station inventory parameters are read from an XML files or from the database and updated interactively. New or updated parameters can be written to an XML file. Execute scolv with the command-line option --offline and optionally provide the database or inventory and bindings parameters in SCML format to fetch event parameters as well as inventory and bindings configuration parameters. Examples:

    scolv --offline
    scolv --offline -d [database]
    scolv --offline --inventory-db [inventory] --config-db [config]

    Select one XML file in the File menu to read event parameters. After processing, the parameters can be saved to another XML file though the File menu.

Location Tab

The Location tab shows detailed information of the associated phases and the residuals from the chosen origin additional information about the hypocenter, time, station distribution, helps to find outlier.


Location tab of scolv with summary widget to the left.

(Redo/Undo) Switch to last/next location result (Tab 1-4) Location/Magnitude/Event/Events tab (Map) map with the event location, associated stations, the color coded residuals (red-positive, blue-negative) and ray paths (Information) Origin information including time, epicentre, depth, number of used and available phases, RMS, azimuthal gap and minimum station distance (List) Table of associated arrivals (phases) containing stream information and phase information (Tab 5-10) Arrival residual plots against distance and azimuth (linear and polar) in a separate tab (Plot) Arrival residual plot (distance over residual in seconds) (Depth) Checkbox to fix to a defined depth (B1) Relocate with the given arrival information (B2) Open Manual Picker (B3) Import picks of other automatic origins belonging to the same event (B4) Compute magnitudes (B5) Commit origin (Summary) all information of the preferred origin of the loaded event

Summary widget

The summary widget in the Location tab contains two other tabs: Preferred and Current. Preferred reflects the current official (database) state of the event while Current shows the current solution (location and magnitudes). Activate the Summary widget by pressing F8 or from the View menu.


The summary tab is available for all other tabs of the scolv main window and also for other GUI applications.


The default arrival residual plot is shown in the figure above. Additional plots are available to analyze arrivals which can be shown by activating the corresponding tab.

In these diagrams, arrival can be activated or deactivating for relocating by clicking on a point or by selecting a range using mouse drag. Deselecting is available by mouse drag when pressing Ctrl.


Additional arrival plots in Location tab of the main window

From upper left to lower right: 1) travel-time residual vs distance, 2) travel-time residual vs azimuth, 3) azimuth vs distance in polar plot 4) travel-time vs distance, 5) corrected travel-time vs distance 6) focal mechanism.

The move out plot uses the reduced travel time with a default reduction velocity of 6km/s. This value is configurable by olv.Pvel, either in the configuration file (scolv.cfg) or in the settings window, e.g.:

# Reduction velocity used for move out plot
olv.Pvel = 6.0

The diagrams in the scolv Location tab present observations (e.g. arrival residuals). Each plot is also interactive to select a subset of data or to zoom into a region.

A plot filter can be defined. Filtering means that arrivals that match the filter are not plotted. They are filtered out visually. To enable a filter click the link “not active” right below the plot tabs. A setup window pops up where the filter can be defined. Currently only a filter by azimuth around epicenter can be applied.


Select the center azimuth and the extent to either side. If OK is pressed all arrivals that fall outside the defined azimuthal area are hidden from the plot and the line below the tabs turns into “Filter is active”. Clicking on the link again and select the “None” filter will show all arrivals in the plot again.

Plots can also be configured to show or hide dashed grid lines. Use olv.drawGridLines for configuration (scolv.cfg). The default is true.

Arrival table

The arrival table shows all arrivals of the current origin. The columns are sortable by clicking on the corresponding header item. Additional data columns can be shown or active columns can be hidden, either initially or interactively. Available column identifiers are:

  • Used

  • Status

  • Phase

  • Weight

  • Method

  • Polarity

  • Takeoff

  • Net

  • Sta

  • Loc/Cha

  • Res

  • Dis

  • Az

  • Time

  • Timeres

  • Slo

  • Slores

  • Baz

  • Bazres

  • +/-

  • Created

  • Latency

The columns printed bold are shown initially. The initial column list can be changed in scolv.cfg by adjusting olv.arrivalTable.visibleColumns:

olv.arrivalTable.visibleColumns = Used, Status, Weight, Phase, Net, Sta,\
                                  Loc/Cha, Res, Dis, Az, Time, +/-

The user can also interactively select what columns are be visible or hidden from a context menu which pops up after a right click on the table header.


The checkbox in the first column indicates if the arrival was used for locating the origin. The overall usage state of arrival contains three flags: arrival time used, backazimuth used and slowness used. If any of these flags is active then the overall usage state is active as well. The arrival table shows those flags indicated by T for pick time, S for horizontal slowness and B for backazimuth. A flag is rendered with a dash if the referred pick does not contain the corresponding feature. For example, if a pick does not carry a backazimuth measure then the backazimuth flag is disabled. It would not make sense to activate backazimuth usage without a corresponding measure.

In most cases, only the time flag, indicated by the capital T, will be active. The other two flags are rendered with dashes, meaning that they are inactive. Background: an arrival refers to a pick which can hold several features. The basic feature a pick must hold is the pick time. Some modules such as for array processing might compute additional pick features. Such features can be the backazimuth and the horizontal slowness. Locators like LocSAT were developed to use those features to increase the precision of a location. Special applictions are locations based borehole networks with poor azimuthal coverage or locations with very few stations.

There may be cases where a backazimuth measure of a pick should not be used by the locator. In contrast, if a backazimuth is available but the timing is bad, disabling the use of the pick time but including the backazimuth may be advantageous. For that a simple weight value is not enough. With a weight one cannot separate whether or not to use a particular feature. So the arrival does not only refer to a pick but holds flags indicating which features of that pick should be used for locating.


Single or multiple rows can be selected in the table. The selection of multiple rows works either with Ctrl+LeftMouse (add single row) or Shift+LeftMouse (range selection).

When pressing the right mouse button on a selected row a context menu pops up. If an unselected row is used, the current selection will be reset and only the row below the mouse is selected.

The context menu allows to:

  • Select arrivals based on a certain criterion,

  • Activate/deactivate selected pick features,

  • Delete selected arrivals,

  • Rename phases of selected arrivals.


If arrivals are deleted, they are removed physically from this solution in contrast to deactivate an arrival where only the used flags are set to zero.

Phase picker: review waveforms

The Picker button opens the interactive waveform picker window. It allows to view and process waveforms for

  • Picking additional phases,

  • Confirming picks,

  • Adding additional pick information such as polarity and uncertainty,

  • Data procssing, e.g. filtering, rotation, spectrogram and much more.

The phase picker window is divided into two parts:

  • The zoom trace and

  • The trace list.

The zoom trace shows a sub area of the active trace in the list.


Request waveforms

When the picker window opens waveforms are initially requested for all streams which have associated phase picks (arrivals). More waveforms can be fetched interavtively:

  1. Provide a maximum distance,

  2. Click on the purple Add button to load the data.

Toggle viewing data without arrivals by clicking the purple Hide button.

During request the background of the traces is changed according to the current state:

  • Yellow: waveforms requested but not yet received.

  • Red: acquisition finished and data is not available.

  • Green: waveforms received and acquisition still in progress.

  • Gray: meta data are missing.


If a trace displays all three components and amplitudes are scaled up, they are not clipped to their window area. The clipping behavior can be toggled by either pressing C or in the menu View ‣ Zoomtrace ‣ Clip components to viewport.

The difference is shown in the following two images:


Trace clipping enabled


Trace clipping disabled

1C / 3C data

Initially the picker window shows only the vertical channels for each station that have been associated with the current location. When opening, it can be configured to

Hotkey t can be used to toggle beetween 1- and 3-component data. Use the yellow buttons or hot keys to load components not yet loaded.

Data filtering

When the picker window opens, the waveforms are filtered by the default filter configured in picker.filters. Selecting filters or unfitlered data interactively is available by choosing the filter from the filter menu or hot keys.

Waveform rotation

Waveforms can be rotated to better view details. For rotating the waveform components into ZNE or ZRT system a new drop down list was added in the toolbar. Selecting either ZNE or ZRT implies that all missing components are requested.


Phase picks

Phase picks shown on waveforms are color-coded:

  • Red: automatic

  • Green: manual

  • Blue: predicted using the selected travel-time table

Mature and light colors indicate arrivals and unassociated picks, respectively. Unassociated picks can be shown/hidden using Ctrl + 5.

Phase picking

Initially the picker window allows to pick the arrival times of the following phases:

  • P

  • Pn

  • Pg

  • pP

  • S

  • Sg

Up to 9 phase types can be configured for selection by hot keys. This list of favourite phases can be customized by picker.phases.favourites, e.g. (scolv.cfg):

# Define a list of favourite phases for quick access
picker.phases.favourites = Pn, P, Pg, PmP, P1, Pg, Sg, S, Sn, SmS

The list of favourites is used to assign shortcuts to. 1 is assigned to the first phase in the list, 2 to the second and so on.


Shortcuts are assigned only to the first 9 favourite phases. All other defined phases can be activated from the Picking menu.

The phases can be also grouped to reflect e.g. regional and teleseismic profiles. In group not hot keys are available. An example configuration looks like this (scolv.cfg):

# Define two phase groups: regional and teleseismic
picker.phases.groups = regional, teleseismic

# Define all phases of group "regional"
picker.phases.groups.regional = Pn, P, Pg, PmP, P1, Sg, S, Sn, SmS

# Define all phases of group "teleseismic"
picker.phases.groups.teleseismic = pP, sP, sS, PKP, PKP

Pick phase selection menu

For making a phase pick the picking mode must be activated by choosing a phase in the Picking menu. Short cuts are:

  • Blue P and S buttons for picking P and phases, respectively (hot keys F1, F2),

  • Numbers shown in the picking menu used as hot keys.

Additional information can be added interactively to the picks:

Press ESC to leave the picking menu. To send all picks to the main scolv window click on the red Apply button or press F5. The picks will be used immediately for relocating.


All manual work will be lost when closing the picker window without sending the picks.

Pick uncertainties

If the mouse hovers a pick, a dashed rectangle is drawn around this pick. Then the pick is active and the right mouse button can be pressed to open the context menu where the polarity and uncertainty can be defined. The following screen shot shows the available uncertainties.


Pick context menu

Additionally, pick uncertainties can be defined freely whereas choosing among a predefined set of uncertainties is a lot faster. The way, pick uncertainties are used depends on the applied locator routine and its configuration. To set the uncertainty of a pick more easily a list of predefined uncertainties can be defined using picker.uncertainties, e.g.:

picker.uncertainties = 0.05, 0.1, 0.2, "(0.1,0.2)", "(0.05,0.02)"

where single values define symmetric and pairs of values define asymmetric uncertainties. The pre-defined uncertainties can be selected during picking using hot keys, e.g. 1 or 2 for the 1st or the 2nd value defined in picker.uncertainties. Later, the uncertainties can be adjusted manually. As for phase types, uncertainty profiles can be additionally configured (scolv.cfg):

# Define available pick uncertainty profiles. Single values
# are symmetric uncertainties whereas tuples are asymmetric
# uncertainties: (left,right). Uncertainty values are given
# in seconds.

# Define an uncertainty profile for local events
picker.uncertainties.profile.local = 0.05, 0.1, 0.2, 0.3, "(0.1,0.2)"

# Define an uncertainty profile for teleseismic events
picker.uncertainties.profile.teleseismic = 0.5, 1, 2, 3, "(1,2)"

# Define the list of uncertainty sets that are active in scolv.
# This first set in the list is used by default. The other sets
# can be activated in the settings dialog (scolv: F3)
picker.uncertainties.preferred = local, teleseismic

If an uncertainty is selected, the active pick is copied into a manual pick and the uncertainty is displayed as semi transparent bar to the left and to the right of the pick. The width of the bar corresponds to the uncertainty in seconds.

Phase polarities

Furthermore the phase pick polarity can be defined. When this is the polarity of the first arrival P phase it can be used to manually set the focal mechanisms of the origin in the FirstMotion diagram.


Right-click on the pick to make a choice: Either positive, negative, undecidable or unset is available. You may speed up your work by using hot keys. If set, the polarity is displayed as an arrow. Undecidable is displayed as a cross (X).


Relocate events

The Relocate button allows relocating based on the selected pick set. Picks may be manually adjusted or created before in the wave review window or arrival properties may be directly adjusted in the arrival table. Prior to relocating choose the locator, the locator profile and additional parameters to the right or from the the tool box.


Defaults may be configured, e.g.

The locators available by default in SeisComP are

Additional locator routines are available by SeisComP plugins which provide their own specific global configuration. Read the concepts section on locators for an introduction.

Pressing Relocate creates a new origin and updates the arrival table and the parameters displayed in the Location tab.

Undoing and redoing actions is availalbe by buttons and hot keys.



You need to create a new origin for computing magnitudes.

Compute magnitudes

When an event was relocated a new origin is created and new magnitudes can be calculated by using the “Compute Magnitudes” button. The advantage of calculating the magnitudes before committing the new origin, is the possibility to check the resulting magnitudes before they are computed manually by scmag.

An amplitudes status window will pop up showing the progress information of measurements. The amplitudes are either measured or fetched from database if the pick is unchanged and the amplitude is already in the system. For new manual picks, waveforms are requested to measured the amplitudes. The popup window contains information about the progress, limitations and possible errors.


Measure amplitudes status window.

After closing the amplitude status window magnitudes are computed and possible limitations are shown, if applicable, in the magnitudes status window. Confirm this window in order to proceed.


Compute magnitudes status window.

All available magnitudes are then shown and can be interactively re-processed in the Magnitudes tab.

Commit a solution

Committing a solution means to send the location (including optional magnitudes) to the processing system and let it decide what origin becomes preferred.

To optimize the workflow

  1. Select an event

  2. Review solution

  3. Commit solution

  4. Optional: Change to Event tab for setting

    • This solution preferred

    • Event type

    • Event certainty

    • Preferred magnitude

    • Preferred focal mechanism

  5. Change to Events tab

  6. Goto 1.

Instead of selecting events from the Events tab, the previous or the next event can be conveniently selected from the edit buttons above the Location tab.


Additional options

Instead of optionally setting parameters in the Event tab an additional commit mode allows to directly set certain parameters such as

  • Event type

  • Ovent certainty

  • Origin

  • Event comment

and to choose options along with the location and its magnitudes. After pressing and holding the Commit button down for a little while, a menu pops up which allows to select With additional options.


Selecting this entry brings up another window where the different options can be set.


It allows to fix the origin to be committed as preferred origin and to set the event type in one go. If Return to event list after commit is ticked, the event list is activated after pressing OK to select another event quickly.

Earthquake name

Contains the event description earthquake name. If this field is empty, the description will be removed from the event otherwise it will be added.


Contains an optional event comment added as comment with ID Operator. The comment text can be visualized in event lists (Events tab) by configuration of the global parameters eventlist.customColumn.eventCommentID or eventlist.scripts.*.

Custom commits

As a shortcut for committing with additional options, custom commit buttons can be added by configuration: Add, enable and configure a custom commit profile in olv.customCommits. With custom commit buttons origin and event paramters can be set, e.g.:

  • Origin status

  • Fixing the origin

  • Event type

  • Event type certainty

  • Magnitude type of the preferred magnitude. The preferred magnitude can also be set in the magnitude tab.

  • Event comments


Custom commit buttons in the Location tab for configured actions and with specific label and color.

Magnitudes Tab

The Magnitude tab shows all available magnitude information for the current origin. They can be recomputed after creating a new origin, e.g. by relocating.


Magnitudes tab of scolv.

(Map) Map with residual and status of the station magnitude, filled circles show stations which delivered a magnitude, empty circles represent for which no magnitude was calculated (Magnitude tabs) Each magnitude and the residuals are displayed in a separate tab, no residuals are displayed for deduced magnitudes like Mw(mB) or M (Information) Magnitude information including network magnitude value, magnitude error, number of used and available station magnitudes and minimum/maximum station magnitude (List) Station magnitude table with weights (Plot) Station magnitude residual from network magnitude (distance over residual) (Weighting) Weighting scheme for the network magnitude (B1) Recalculation of the network magnitudes (B2) Open waveform review

Station magnitudes

For each of the different magnitude types (e.g. mb, mB, MLv, Mw(mB)), the station magnitudes are shown in the magnitude residual plot and the table. The residual plot visualizes the difference between the station magnitude and the network magnitude for the different station distances. After relocation the magnitudes can be recalculated by the “Compute Magnitudes” button in the Location tab.

The station magnitudes can also be recalculated by interactive waveform analysis. Press the B2 button to start the interactive analysis.


Magnitudes cannot be recalculated for origins loaded from database. To review magnitudes, create a new origin (relocate), recompute magnitudes and then change into this tab to open either the waveform review window or to just remove outliers.

Network magnitudes

Network magnitudes are computed from corresponding station magnitudes. The considered station magnitudes can be selected or unselected in the list and in the plot of station magnitudes. The method, the status and the margins to disregard outliers can be selected. Normally, the 25%-trimmed mean is calculated as network magnitude to stabilize the result against a few outliers. The 25%-trimmed mean first removes the outliers of the outer 12.5% percentiles and then forms the mean.

Magnitudes that were not computed due to missing data or low signa-to-noise ratios have a cross button rendered in their tab headers and their value is nan (not a number). Furthermore was the status of the magnitude set to rejected. To manually review the waveforms and to fine tune the parameters, open the waveforms and add at least one station magnitude. Otherwise the rejected magnitude will be removed from the origin prio to committing it.

Summary magnitude

The summary magnitude typically is calculated from all network magnitudes by scmag and set as preferred magnitude type by scevent after committing or confirming an origin. The defaults can be changed by configuring scmag and scevent.

However, in combination with custom commit buttons, the network magnitude to be considered as the preferred can be set by hitting this configured button or interactively in the magnitude tab of scolv. Interactively check the box in the network magnitudes tab, then press the custom commit button. Setting the preferred magnitude interactively in the magnitude tab takes priority over the configuration of the custom commit button.

Waveform review

The magnitude review page also allows the review of waveforms. The button Waveforms brings up the amplitude waveform review page. The waveform review magnitude type is the same as the currently active tab.


The initial view loads all traces of all arrivals within the defined distance for that magnitude type. The zoom trace shows all components required for this particular amplitude type and the lower part shows all stations and only the currently active component. All traces are aligned on trigger time (blue P marker). If a station has got an amplitude, it shows up as a red (automatic determined amplitude) or green (manually determined amplitude) marker. This display is similar to the Picker.

The toolbar contains two lines of settings. The first line is similar to the Picker, the second line is amplitude picker specific.


Second toolbar line: filter selection, filter toggle, min SNR editor, amplitude measurement type selector, amplitude combiner selector, (re)calculate amplitudes, apply amplitudes.

A station trace is divided into three areas:

  • Dark gray: unused data

  • Light gray: data used for noise offset and noise amplitude

  • White: data used for amplitude calculation

The example above shows nicely how different data time windows are used for amplitude determination depending on the distance. This depends on the amplitude type and its implementation.

Available actions are:

  • Show raw data

  • Change processing settings

  • Adjust processing areas (noise, signal) for a single trace or all traces

  • Apply a secondary filter (e.g. to remove noise or low frequencies)

  • Pick amplitudes within a user definable time window

  • Add unpicked/unassociated stations that are within a certain distance

  • Remove bad stations

Filtered and raw data

By default the processed waveforms are displayed. The processing is defined by the magnitude type. To view the raw waveforms change the filter drop down box to Raw.

Processing settings

A basic amplitude processor uses two basic settings: Minimum signal/noise ratio (SNR) and data time windows. The default minimum SNR is defined by the implementation of the amplitude algorithm. This default SNR is shown in the toolbar right from Min SNR:. In some situations an operator might want to increase or decrease the minimum SNR for some reason. This can be done by modifying the value in the corresponding spin box.

In the time scale of the zoom widget and the overview three black triangles are visible. Those triangles can be used to adjust the data time windows of either the zoom trace (upper part) or all traces (lower part) by dragging the handle with the left mouse button.

Some amplitude processors allow the modification of the type of amplitude measurement (e.g. absolute maximum or peak-to-peak) and/or the amplitude combiner procedure. This procedure is mostly used when a final amplitude from two components is computed, e.g. ML on the horizontals. The combiner procedure defines how the amplitudes of each horizontal are combined to a single amplitude, e.g. by taking the maximum of both or the average.

If the amplitude processor allows any of these options, the corresponding drop down boxes are enabled in the toolbar and can be used to change the defaults.


Amplitudes are not recalculated if any changes to the settings are made. Recalculation has to be activated manually (see below).

Secondary filters

Another option is to filter the data additionally to the internal filter of the amplitude processor. Be warned that wrongly applied filters screw up the results. The available filters can be defined in the settings dialog of scolv or in the configuration file similar to the manual picker filters (scolv.cfg):

# List of filters available in the picker. Format:
# "name1;filter-definition1", "name2;filter-definition2"
amplitudePicker.filters = "4 pole HP @2s;BW_HP(4,0.5)"

The new filter selection is applied immediately to the waveforms while the amplitudes are not recalculated (see next section).

Calculate amplitudes

To calculate the amplitudes of all traces with the current settings press the green check in the toolbar. It will process all traces and recalculate the amplitudes within the shown time windows. If an error occurs, it will show up as a small message box in the station trace itself. If a new amplitude is available, its state is set to manual and the marker is updated to reflect the new position of the amplitude. If the mouse hovers an amplitude marker, a tooltip pops up after a certain amount of time and shows information about the amplitude.


Pick amplitudes

In addition to the default picking of all stations it is also possible to define the time window of the amplitude of a station manually. To do so, activate picking by pressing 1 or in the main menu: Amplitudes ‣ Pick amplitudes.

There are two modes of picking:

  1. Create a time window by pressing with left mouse button at the start time and releasing at the end time, or

  2. Double click at a time and use a time window of [t-0.5sec;t+0.5sec]

Add stations in range

Unpicked or unassociated stations can be added the same way as in the manual picker. The new stations will not have an amplitude and need either manual picking or global amplitude recalculation.

Remove bad stations

Stations can be disabled by either double clicking on the trace label in the overview or by deactivating an amplitude similar to deactivating a pick.

Confirm the amplitudes

The red button in the toolbar confirms all amplitudes and transfers them to the magnitude review page. Only activated amplitudes are transferred. Disabled stations or disabled amplitudes are ignored. At this stage all magnitudes are calculated and the network magnitude is calculated according to the available settings: Mean, Median or Trimmed mean.

Event Tab

The Event tab gives all information of associated origins and magnitude of the actual event. Here the selection of the preferred origin and preferred magnitude can be influenced independent from scevent. The messaging between scevent and scolv about the selected origins and magnitudes can be viewed in a window that has to be opened by pulling the left side frame to the right.


Event tab of scolv.

  • Origin list: List of all associated origins * B1 Selector for the event type * B2 Button to fix the selected origin as preferred * B3 Button to let scevent select the preferred origin

  • Magnitude list List of magnitudes of the actual origin * B4 Button to fix the selected magnitude as preferred * B5 Button to let scevent select the preferred magnitude

  • Focal Mechanism: List of all focal mechanisms associated to the selected event.

The map (lower left part) shows all associated origins while the currently selected origin (Origin list) is drawn filled.

Origin list

The Origin list shows details of all available origins. You may fix/unfix an origin to become the preferred one or select the type and set the type uncertainty for the selected sevent.

Select a row or cell and press the right mouse button to copy the row or cell, respectively. The Stat column indicates a combination of the mode and the status of the origin.

The mode is color coded:

  • Red: automatic

  • Green: manual

The status is coded by a single character:

  • A: unset, status not specifically set, e.g. usually automatic origins from scautoloc

  • F: final

  • V: reviewed

  • C: confirmed

  • P: preliminary, e.g. XXL origins from scautoloc

  • R: reported

  • X: rejected

Magnitude list

The magnitude list shows all available magnitudes available for the origin selected in the Origin list. You may fix/unfix a magnitude type to become the preferred magnitude.

Select a row or cell and press the right mouse button to copy the row or cell, respectively.

Focal Mechanism list

The Focal Mechanism tab shows all focal mechanisms and moment tensors associated to the selected event. You may fix the preferred mechanism or fix/unfix Mw to become the preferred magnitude.

Select a row or cell and press the right mouse button to copy the row or cell, respectively.

Events Tab

The Events tab gives an overview of the events in the defined time span. Listed events are updated in real time as new events arrive in SeisComP or are loaded from the database. The title of the tab also indicates the number of shown vs. the total number of loaded events. The numbers can be different because events can be hidden from the list by filtering.

When starting scolv with the option –offline, events can also be loaded from an XML file using the File menu in the main window.


scolv Events tab with the list of events and the filter window.

Information about origin time, preferred (“best”) magnitude, preferred magnitude type, number of phases, epicenter and depth, origin status, region, agency and event/origin ID are similar to the event list in scesv. Additionally, all origins associated with one event are displayed if an event item is expanded.


The region name of an event is read from the database or received via the messaging bus. It is an integral part of the event description and set based on the data set available at the time of the event creation. The region name of the origins is not part of the origin description and resolved dynamically when the information is required. That can lead to confusion if the dataset of the computer where the event has been created and the local dataset differs. Therefore the region names resolved locally are rendered with italic font style.

Events table

As with the arrival table the shown columns of the list are also configurable. The available identifiers are:

  • OT(GMT) : origin time

  • Type : event type

  • M : magnitude

  • MType : magnitude type

  • Phases : number of used phases

  • RMS : root-mean square travel-time residual

  • AzGap: largest azimuthal gap between two neighboring stations of an origin

  • Lat : latitude

  • Lon : longitude

  • Depth : depth

  • DType : depth type

  • Stat : a combination of the color-coded mode and the status of the preferred origin as described by a letter. A trailing “+” indicates that origins were contributed to the event by multiple agencies, e.g. “C+”.

  • FM : focal mechanism

  • Origins: number of origins per event

  • Agency : agency ID

  • Author : author

  • Region : region name

  • ID : ID of the show element, e.g. event or origin

The bold identifiers are visible initially by default. To show or hide columns interactively click with the right mouse button on the table header and check or uncheck the corresponding column.

Sorting and re-ordering is available by clicking on the header of the columns and by dragging the header fields, respectively. Right-click on cells to copy individual cells values or entire rows.

The initial list can configured with the global module parameter eventlist.visibleColumns in global.cfg or scolv.cfg, e.g.:

# Remove Type and Author from column list that is initially active
eventlist.visibleColumns = Type, M, MType Phases, RMS, Lat, Lon, Depth, DType, Stat, FM, Author, Agency, Region, ID

Event filtering

Database request filters can be applied interactively or automatically by

  • Time: Select a time period or a number of days before current time.

  • Interactive custom request filters: You may set and adjust a custom request filter** in the filter parameter window which opens when pressing the Filter button. Press Read to reload the events list based on the filter parameters. The interactive custom request filter only concerns the database request for loading events. It does not update the current list. Use the Global parameters for presetting the values (scolv.cfg or global.cfg), e.g.:

    eventlist.filter.database.minlat = 51.0

Event lists already loaded from from the database can be filtered by

  • Event type: Activate by check box Hide other/fake events. If checked, all

events with the configured types are hidden from the list. The default event types to hide are not existing and other are hidden. If unchecked, the filtering is inactive and the events are shown. Pressing the Hide button only affects the currently loaded list. Configure the event types used for this filter as well as the label text for the checkbox. Use the Global parameters for presetting the values s (scolv.cfg or global.cfg):

# Define the event types to be filtered
eventlist.filter.types.blacklist = "not existing", "other",\
                                   "outside of network interest"

# Define the label of the button to filter the events
eventlist.filter.types.label = "Hide fake events"

# Define the default behavior
eventlist.filter.types.enabled = true
  • Agency: Activate by check boxes Show only own origin and/or “Show only latest/preferred origin per agency”. The button Show only own events will hide all events where the preferred origins agencyID is not the configured agencyID of scolv. This is the default behavior which can be customized (scolv.cfg or global.cfg):

    # Set the preferred agencyIDs to GFZ and EMSC
    eventlist.filter.agencies.whitelist = GFZ, EMSC
    # Set type to 'origins' which means that an event will pass the filter if
    # at least one origin is from a preferred agency defined with the whitelist
    # above. The default type is 'events' which checks only the events preferred
    # origin.
    eventlist.filter.agencies.type = origins
    # Defines the text of the option "Show only own events".
    eventlist.filter.agencies.label = "Show only own events"
    # Enable this filter initially. If this option is not used, the filter
    # is disabled by default.
    eventlist.filter.agencies.enabled = true
  • Source region: Select a source region, activate “Hide events” and choose to hide events inside or outside the region. Pressing the Hide button only affects the currently loaded list. Pre-defined regions can be configured in the global configuration per bounding box or region defined by a BNA or GeoJSON polygon (global.cfg, scolv.cfg):

    # Configured a list of regions that can be used as filter of the result set.
    eventlist.filter.regions.profiles = chile
    # Defines the name of the region that shows up in the listbox. = Chile
    # Defines a rectangular region with a list of 4 values: latmin, lonmin, latmax,
    # lonmax.
    # eventlist.filter.regions.region.chile.rect = -40, -80, -10, -60
    # Defines the name of the polygon for the region check. If defined then the
    # rect region has no effect. The configured polygon name is being search for in
    # the global FEP regions and the spatial vector layer. The first polygon found
    # with the given name will be taken.
    eventlist.filter.regions.region.chile.poly = chile

Custom Actions

Since the internal data model is limited, scolv allows deriving custom quantities from the event or origin objects. These quantities can be displayed or processed further by external script. This procedure can help to evaluate origins in a better or more specific way.

Two sources of information are currently supported

  • Origin comments provided along with origins to be shown in scolv tabs,

  • External scripts provided by the SeisComP operator to extract specific information from events or origins which are shown in tabs or processed further.

Origin comments

Currently only one comment of an origin can be added to the different panels.

Location tab

To add an origin comment value to the information panel of the Location tab, configure display paramters in scolv. Example (scolv.cfg):

# Define the comment id to be used = SED.quality

# Define the default display value if no comment is available
display.origin.comment.default = "-"

# Define the label text in the information panel for this value
display.origin.comment.label = Quality

Event tab

To add a custom column to the origin list of the Event tab showing an origin comment value, configure eventedit parameters in scolv or global. Example (scolv.cfg or global.cfg):

# Define the default value if no comment is present
eventedit.origin.customColumn.default = "-"

# Define the comment id to be used
eventedit.origin.customColumn.originCommentID = SED.quality

# Define the column header label = "Qual"

# Define the column position in the table
eventedit.origin.customColumn.pos = 4

# Allows to map comment values (strings) to colors. In this case the
# comment will have A,B,C or D which is mapped to green, yellow, orange and
# red
eventedit.origin.customColumn.colors = "A:00FF00","B:rgb(64,192,0)",\

Events tab

To add a custom column to the event list of the Events tab using a comment value, configure eventlist parameters in scolv or global. Example (scolv.cfg or global.cfg):

# Define the default value if no comment is present
eventlist.customColumn.default = "-"

# Define the comment id to be used
eventlist.customColumn.originCommentID = "SED.quality"

# Define the column header label = "Qual"

# Define the column position in the table
eventlist.customColumn.pos = 5

# Allows to map comment values (strings) to colors. In this case the
# comment will have A,B,C or D which is mapped to green, yellow, orange and
# red
eventlist.customColumn.colors = "A:00FF00","B:rgb(64,192,0)",\

The last three examples are used to show the SED.quality comment value which is set by the NonLinLoc locator plugin.

In order to show event comments, e.g., set during committing replace eventlist.customColumn.originCommentID by eventlist.customColumn.eventCommentID:

# Define the comment id to be used
eventlist.customColumn.eventCommentID = "Operator"

# Define the column header label = "Operator"

External scripts

User-defined scripts may generated and executed

  • By custom buttons

  • Automatically to show custom information in the Location, Event and the Events tabs. The information may include parameters derived from origins.

Custom buttons

scolv allows to add one custom button to the Summary window and two custom buttons to the Location tab. When pressing the custom buttons, user-defined external scripts are executed. Configuration (scolv.cfg):

Custom information in tabs

Origin parameters can be derived by external scripts. When configured for the scolv tabs Location, Event or Events, scolv will call those scripts and writes a binary serialized origin object to its standard input. scolv reads the script output and displays this value only if the return code of the script is 0.

Below you find examples for

Example script reading origin parameters from stdin just returning the standard error of the origin:

#!/usr/bin/env seiscomp-python
from __future__ import print_function
import sys
from seiscomp import datamodel, io

def main():
    ar = io.BinaryArchive()

    # Open standard input
    if not"-"):
        # Hmmm, opening stdin failed
        return 1

    # Read the object
    obj = ar.readObject()

    # Try to cast obj to an origin
    org = datamodel.Origin.Cast(obj)
    # No origin -> error
    if not org:
        return 1

    # Try to print the standard error to stdout
    # Field not set, return error
    except Exception:
        return 1

    return 0

if __name__ == "__main__":


The script must be executable. In Linux don’t forget to call

chmod +x /path/to/script

As many scripts as necessary for evaluation can be created.


Calling external scripts causes overhead and can take some time depending on the implementation of the script. scolv needs to access the database to fetch additional information which it does not need normally. The slower the database access, the longer it takes to display the results.

Location tab

To add the output of an external custom script to the information panel of the Location tab, configure display parameters in scolv. An example script is given above. Configuration example (scolv.cfg):

# Define the available add-ons to be used
display.origin.addons = qual, qual2

# Configure each add-on
display.origin.addon.qual1.label = "Qual1"
display.origin.addon.qual1.script = "@DATADIR@/scripts/scolv/script1"

display.origin.addon.qual2.label = "Qual2"
display.origin.addon.qual2.script = "@DATADIR@/scripts/scolv/script2"
Event tab

Provide the external script and add the output to the origin list of the Event tab, configure the eventedit parameters in global.cfg or scolv.cfg. An example script is given above. Configuration example:

eventedit.scripts.columns = qual1, qual2

eventedit.scripts.column.qual1.label = "Qual1"
eventedit.scripts.column.qual1.pos = 8
eventedit.scripts.column.qual1.script = "@DATADIR@/scripts/scolv/script1"

eventedit.scripts.column.qual2.label = "Qual2"
eventedit.scripts.column.qual2.pos = 9
eventedit.scripts.column.qual2.script = "@DATADIR@/scripts/scolv/script2"
Events tab

From the event list external scripts can be excuted with origin or event objects or both as input from stdin to display the output of the script (stdout) in a custom column.

Provide an external script and add the output to event list of the Events tab, configure the eventlist parameters in global.cfg or scolv.cfg. An example script is given above. Configuration example for passing origin or event objects:

eventlist.scripts.columns = qual1, qual2

eventlist.scripts.column.qual1.label = "Qual1"
eventlist.scripts.column.qual1.pos = 5
eventlist.scripts.column.qual1.script = "@DATADIR@/scripts/scolv/script1"
eventlist.scripts.column.qual1.types = Origin

eventlist.scripts.column.qual2.label = "Qual2"
eventlist.scripts.column.qual2.pos = 6
eventlist.scripts.column.qual2.script = "@DATADIR@/scripts/scolv/script2"
eventlist.scripts.column.qual2.types = Event

Adding external scripts to the event list is the most expensive part. Whenever the event list is reloaded, it will start to run the scripts on all origins in the background. It can take a while until the complete list has been processed. A progress indicator is plotted in the middle of the event list while the background processes are running.


All settings of scolv can be adjusted in its configuration file. However, some settings can be changed on-the-fly. The connection to the messaging system and the database can be adjusted in the Setup connection dialog access by pressing F2. A window for adjusting scolv settings is available which can be opened by pressing F3.


When pressing the Save button in the scolv settings menu, the parameters will be written to $HOME/.seiscomp/scolv.cfg (use mode configuration) where they take priority over configurations in $SEISCOMP_ROOT/etc/scolv.cfg (system mode configuration).


This section contains settings for all the main tabs and all waveform windows.


Global settings

Reduction velocity

Sets the reduction velocity used for plot MoveOut.

Compute magnitudes after relocate

Automatically computes magnitudes after each relocation. This has the same effect as pressing “Compute magnitudes” manually.

Compute magnitudes silently

Automatically closes the compute magnitudes dialog if the computation is finished and no error occurred.

Draw grid lines

Enables dashed grid lines in all plots.

Data source

Defines the waveform data source for both, pick review and amplitude review

Default distance for “add station”

The default value to add stations (traces) that have not been picked or associated is 15 degrees. A lower value can be defined, e.g. if mainly local events are analyzed.

Hide station traces without data and arrivals

If new stations are added during pick review or amplitude review and if no data is available for some of those stations, they will be hidden and not shown. Once data arrives the trace becomes visible.


This section contains settings for the picker window.


Waveform picker settings

Show cross hair cursor

Enables the cross hair cursor which shows the currently selected uncertainty ranges.


Select the current uncertainty set to be used (picker.uncertainties.preferred).

Remove automatic station picks

If checked all automatic picks of a station with manual picks are removed once the manual review is confirmed.

Remove all automatic picks

If checked all automatic picks are removed once the manual review is confirmed.

Magnitude review

This section contains settings for the magnitude waveform review window.


Amplitude/magnitude review settings

Waveform time window pre offset

Sets an offset before the used amplitude time window that is used when collecting data.

Waveform time window post offset

Sets an offset after the used amplitude time window that is used when collecting data.

The greater the offset the more the amplitude time window can be extended or shifted.

Units and precisions

Local network users prefer the distance unit in kilometers while others prefer degrees. scolv (as any other GUI) can be configured to show either the one or the other.

# If true, show distances in km. Use degree otherwise.
scheme.unit.distanceInKM = true

Furthermore the precision of various values can be configured:

# Precision of depth values.
scheme.precision.depth = 0
# Precision of latitude/longitude values.
scheme.precision.location = 2
# Precision of magnitude values.
scheme.precision.magnitude = 2
# Precision of pick times (fractions of seconds).
scheme.precision.pickTime = 1


Configuring units and precisions only affects the way the values are presented, not the values themselves. These and other lock-and-feel parameters can be adjusted in scheme section of the global configuration.


The following table describes the available key combinations and their triggered actions in scolv. The hotkeys are provided for:

  • Main window

  • Picker window

    • all areas

    • upper area - picking trace

    • lower area - picker overview

  • Magnitude waveform window.



Main window


Setup connection dialog


Picker and amplitude settings dialog


Display left event summary panel


Show ray paths and associated stations


Show event list (Events tab)


Toggle fullscreen


Create an unassociated artificial origin at the current map center


Go back to last origin (if available)


Go to next origin (if available)


Load previous event from the event list


Load next event from the event list

Mouse wheel

Zoom map in/out

Double click

Center map at the clicked position

Phase picker

1 .. 9

Activate configured phase picking


Leaving picking mode


Add station




Switch to E-component


Toggle between current filter and unfiltered


Toggle limiting filters to the selected trace


Toggle through all configured filters: descending


Toggle through all configured filters: ascending


Switch to N-component


Maximize visible amplitudes


Deactivate a trace and scroll down (through the traces)


Switch to Z-component


Scroll up (through the traces)


Scroll down (through the traces)


Increase time scale


Decrease time scale


Show Fourier spectrum of selected trace


Default trace view


Toggle display of theoretical arrivals


Toggle display of picks (not arrivals). If picks should be shown the first time, all picks within the time span of interest are loaded from database. The behavior is the same as ticking the option “Load all picks”.


Time zoom in


Time zoom out


Align by origin time


Align on 1st - 9th favorite phase


Align on theoretical onset of 1st - 9th favorite phase


Align on P arrival


Align on S arrival


Jump to next marker (picking mode)


Jump to previous marker (picking mode)

Picking trace


Active picker: Repick phase by the selection, e.g. AIC, BK


Temporarily toggle 3 component view


Active picker: Set pick at curser position


Inactive picker: Show Fourier spectrum from visible window


Active picker: Set pick at curser position, load next trace


Move trace view to left (fine)


Move trace view to right (fine)


Move trace view to left (rough)


Move trace view to left (rough)


Remove polarity from new pick


Set negative polarity on new pick


Set positive polarity on new pick


Set positive polarity to undecidable on new pick


Amplitude zoom in


Amplitude zoom out


Amplitude zoom in


Amplitude zoom out


Toggle spectrogram of selected trace


Time zoom in


Time zoom out


Reset zoom window to the length of the picking overview

Picking overview


Sort by distance


Sort by residual


Search for station code


Time zoom in


Time zoom out


Time and amplitude zoom in


Time and amplitude zoom out


Decrease row height


Increase row height

Amplitude picker

Zoom trace


Scale amplitudes down


Scale amplitudes up


Decrease visible time span (zoom in)


Increase visible time span (zoom out)


Reset zoom window to the length of the picking overview

Trace overview


Compute network magnitudes and return to Magnitudes tab


Pick amplitudes manually


Leave picking mode


Toggle filter


Default view


Move trace view to left (fine)


Move trace view to right (fine)


Move trace view to left (rough)


Move trace view to left (rough)


Recompute amplitude of selected station


Reset all noise and signal time windows as configured


Deactivate selected pick or station


Decrease row height


Increase row height


Increase time scale


Decrease time scale


Sort traces by distance


Sort traces by station name


Sort traces by station name


Move trace view to left (fine)


Move trace view to right (fine)


Move trace view to left (rough)


Align traces by origin time


Align traces by trigger time

Module Configuration


scolv inherits global options.


Default: 1

Type: double

Unit: days

Number of days to preload events from the database when staring scolv.


Default: MLv,mb,mB,Mwp

Type: list:string

List of magnitude types to be calculated when computing magnitudes. This list can be altered interactively so it reflects only the default unless computeMagnitudesSilently is set to true. The configured types should include all types which are also computed by scmag in order to allow their processing in scolv. Otherwise scmag may add magnitudes to origins without interaction in scolv.


Default: M,ML,MLv,mb,mB,Mwp,Mjma,Ms_20,Ms(BB)

Type: list:string

A list of magnitude types to be displayed in the summary widget (F8).


Type: string

Label of the button that triggers the script defined in "scripts.script0".


Type: string

Label of the button that triggers the script defined in "scripts.script1".


scripts.* Define scripts linked to extra buttons. A button is created by definition of the corresponding script.


Type: string

Full path to the script which enables a publish button in the summary panel on the left side of scolv (activated with F8).


Type: string

Full path to the script executed when hitting the button labeled with "button0". OriginID and EventID are passed to the script as arguments.


Type: string

Full path to the script executed when hitting the button labeled with "button1". OriginID and EventID are passed to the script as arguments.


Default: false

Type: string

If the publish button is clicked while another script is still running, a message box pops up with a warning that a script is still running and to option to terminate it. If this flag is true, then it will be terminated automatically without user interaction and the warning message.


Type: string

Sets the default event type to be used when confirming a solution. If not set, the event type is not changed at all unless "with options" is used. The origin or its source must be associated with an event already.


Type: list:string

A list of event types which are commonly set. This defines a priority list which will be displayed on top of the event type selection menu. Additionally the remaining (non-prioritized) types are displayed with less contrast. The order is preserved in the event editor as well as in the drop-down list of the "Commit with additional options" dialog.


Type: string

Sets the default magnitude aggregation method. It can be either "mean", "trimmed mean" or "median". If not set, the default behavior is used which computes the mean if less than 4 stations are available, trimmed mean otherwise.


Default: false

Type: boolean

Automatically starts computation of magnitudes after relocating an origin.


Default: false

Type: boolean

Starts magnitude computation without user interaction if everything runs without errors. In case of errors a window pops up with the current state of processing.


Default: true

Type: boolean

If enabled, a magnitude selection pop window will open in advance to compute magnitudes. The default selection reflects the configuration parameter "magnitudes".


Default: 6.0

Type: double

Unit: km/s

The velocity applied to reduce travel times in the "MoveOut" plot of the Location tab.


Default: true

Type: boolean

Sets the drawing of lines in the map connecting the station with the event.


Default: true

Type: boolean

Sets the drawing of grid lines in the plot.


Default: true

Type: boolean

If a locator does not populate the take off angle in its arrivals, the first motion plot will not show picked polarities. This option defines whether to compute take off angles that are not present in the arrivals or not.


Default: 15.0

Type: double

Unit: deg

The default value for adding unassociated stations in the picker.


Default: false

Type: boolean

If enabled, all traces without data and arrivals are hidden in the picker.


Default: false

Type: boolean

If enabled, all traces of disabled stations without picks are hidden.


Default: 10.0

Type: double

Unit: km

When creating an artificial origin this is the default depth used.


Default: false

Type: boolean

Adds advanced input parameters in artificial origin dialog.


Default: true

Type: boolean

Adds an icon to the system tray and displays a message when a new event was received.


Type: list:string

A list of origin comment profiles. These profiles will be used to populate origin comments when committing an origin.


Type: list:string

A list of magnitude comment profiles. These profiles will be used to populate magnitude comments when committing a magnitude.

Default: 360.0

Type: double

Unit: deg

Maximum distance in degrees up to which also unassociated stations are shown in the map. 360.0 deg which will show all unassociated stations.

Default: -1.0

Type: double

Unit: deg

Default map radius in degrees if a new event is selected. A negative value restores the default behavior.


Type: list:string

Defines the visible columns in the arrival table. Valid tokens are: Used, Status, Phase, Weight, Method, Polarity, Takeoff, Net, Sta, Loc/Cha, Timeres, Dis, Az, Time, +/-, Slo, Slores, Baz, Bazres, Created, Latency


Default: true

Type: boolean

Whether the arrival plot should show uncertainties or not by default. That flag can be toggled with ‘e’ or via the context menu during runtime.


Default: LOCSAT

Type: string

The default locator interface to use.


Type: string

The default locator profile to use.


Type: double

Unit: km

Minimum depth which is set if the locator used supports fixing the depth. If the depth is lower than this value, the depth is fixed to this configured value and the origin is relocated again.


Default: false

Type: boolean

Whether to preset the locator settings when an origin is being loaded. It tries to figure the locator type from Origin.methodID and the profile from Origin.earthModelID.


Default: false

Type: boolean

Activates the button "Force association with event" when committing with additional options. This is just the default setting and can be changed manually when the dialog pops up.


Default: false

Type: boolean

Activates the button "Fix this origin as preferred solution" when committing with additional options. This is just the default setting and can be changed manually when the dialog pops up.


Default: false

Type: boolean

Whether to return to the event list after committing with additional options or not.


Type: list:string

Turns the event comment input field into a drop down box allowing the user to select from a list a predefined comment values which may be changed if required.


olv.originComments.* The container for all origin comment profiles.


olv.originComments.$name.* $name is a placeholder for the name to be used and needs to be added to olv.originComments to become active.

olv.originComments = a,b
olv.originComments.a.value1 = ...
olv.originComments.b.value1 = ...
# c is not active because it has not been added
# to the list of olv.originComments
olv.originComments.c.value1 = ...

Type: string

The id of the comment to be added, updated or removed.


Type: string

The label shown in the commit dialog.


Type: list:string

A list of options to select from. Actually the values to populate the dropdown list with.


Default: false

Type: boolean

If free text is allowed in addition to the predefined values.


olv.customCommits.* Configure custom commit buttons which behave like shortcuts to “Commit with additional options”. Pressing a custom button does not open a popup window. Instead it reads the configured profile and applies the options to the event and origin. Each commit button can be coloured and labeled.


olv.customCommits.$name.* $name is a placeholder for the name to be used.


Default: true

Type: boolean

Enable this commit button.


Default: false

Type: boolean

Ask for confirmation by presenting the "commit with options" dialog with the options pre-populated from this configuration. Cancelling the dialog aborts the commit procedure.


Default: false

Type: boolean

Associate a new origin to the currently active event or not.


Default: false

Type: boolean

Fix the origin as preferred solution in the event it is associated to.


Type: string

The event type to be set of the event associated with the committed origin. If unset, the type remains unchanged. Use quotes for event types with spaces, e.g. "not existing".


Type: string

The event type certainty to be set of the event associated with the committed origin. If unset, the type certainty remains unchanged.


Type: string

The status to be set of the origin being committed. If unset, the status remains unchanged. If empty, the origin status will be set to none.


Type: string

Sets the preferred magnitude type of the event. If unset, no changes will be requested. If empty, the currently fixed preferred magnitude type will be reset.


Type: string

Optional event name which will be set. This option exists for completeness and does not make much sense to be applied on any event. Use quotes for event names with spaces, e.g. "Quarry XYZ".


Type: string

Optional event comment which will be set. Use quotes for event comments with spaces, e.g. "Blast on Monday morning".


Default: false

Type: boolean

Return to the event list after committing or not.


Default: Commit+

Type: string

The commit button label. Use quotes for labels with spaces, e.g. "Earthquake reported".


Type: color

Optional primary color for the bulk commit button. Use hexadecimal values.


Type: color

Optional text color for the bulk commit button. Use hexadecimal values.


Default: false

Type: boolean

Add a summary of the actions to the button’s tooltip.


olv.magnitudeComments.* The container for all magnitude comment profiles.


olv.magnitudeComments.$name.* $name is a placeholder for the name to be used and needs to be added to olv.magnitudeComments to become active.

olv.magnitudeComments = a,b
olv.magnitudeComments.a.value1 = ...
olv.magnitudeComments.b.value1 = ...
# c is not active because it has not been added
# to the list of olv.magnitudeComments
olv.magnitudeComments.c.value1 = ...

Type: string

The id of the comment to be added, updated or removed.


Type: string

The label shown in the magnitude view.


Type: list:string

A list of options to select from. Actually the values to populate the dropdown list with.


Default: false

Type: boolean

If free text is allowed in addition to the predefined values.


picker.* Parameters controlling the phase picker window.


Default: false

Type: boolean

Activate a cross hair cursor showing the configured uncertainties when in picking mode.


Default: true

Type: boolean

Load all existing picks for the requested data time window.


Default: false

Type: boolean

If enabled, the picker will not add stations that are not configured with a detecStream in global bindings.


Default: false

Type: boolean

Limit the data acquisition to the number of nearest stations given by "picker.limitStationAcquisitionCount".


Default: 10

Type: int

Limit the data acquisituion to the given number of the nearest stations. Requires to activate "picker.limitStationAcquisition".


Default: false

Type: boolean

If enabled, acceleration data is loaded for co-located stations where picked on velocity data.


Default: false

Type: boolean

Load all three components by default. If disabled, additional components are fetched upon request.


Default: false

Type: boolean

If enabled, all three components are shown in the picker zoom trace. The distance is limited to what is configured in "picker.allComponentsMaximumDistance".


Default: 10

Type: double

Unit: deg

The distance limit for the "picker.showAllComponents" flag.


Default: false

Type: boolean

If enabled, data is requested around the P pick for each stations. Otherwise origin time is used and the time window for all stations is the same.


Default: false

Type: boolean

After picking and pushing the solution back to scolv all automatic arrivals are removed from a station if a manual pick exists.


Default: false

Type: boolean

After picking and pushing the solution back to scolv all automatic arrivals are removed from all stations regardless if a manual pick exists or not.


Default: 60

Type: int

Unit: s

The data time span added to the left of either origin time or first arrival depending on the usePerStreamTimeWindows flag.


Default: 120

Type: int

Unit: s

The data time span added to the right of the requested time window.


Default: 1800

Type: int

Unit: s

Minimum data time window length.


Default: 0.5

Type: double

Unit: s

Defines the relative position of the alignment when traces are aligned at a phase. This value is bound to interval [0:1] where 0 is the left side and 1 is right side of the trace window.


Type: double

Unit: s

Start of the re-picker time window relative the cursor position on the trace.


Type: double

Unit: s

End of the re-picker time window relative the cursor position on the trace.


Type: list:string

List of filters available in the picker. Format: "name1;filter-definition1", "name2;filter-definition2"


Type: list:string

A list of channel codes to be used when searching for velocity channels. Usually this information is part of the meta data. In case it is not, this list is used.


Type: list:string

A list of channel codes to be used when searching for acceleration channels. Usually this information is part of the meta data. In case it is not, this list is used.


Default: P,Pn,Pg,pP,sP,S,Sg

Type: list:string

Phases for which theoretical arrival times are shown.


Type: list:string

A list of phases that is available for picking in the Picking menu. The phases are not accessible through hot keys as for "picker.phases.favourites". The phases are considered if the more complex phase group definition "picker.phases.groups" is not provided.


Type: list:string

Unit: s

List of pre-defined pick uncertainties. The format of each list item is either a double value or a pair of double values for asymmetric uncertainties, e.g. "val1","(val2,val3)". This parameter is only used if "picker.uncertainties.preferred" is undefined.


Default: false

Type: boolean

If enabled then the currently selected component for all traces will be activated according to the mouse position in the zoom trace (old behaviour). If disabled (default) then only the component of the zoom trace will change but the overall component will stay the same. It must be changed explicitely.


picker.auxiliary.* Define the notion and behaviour of auxiliary channels. They are identified through configurable patterns and if identified as such they will be treated differently in defined situations.


Type: list:string

A list of wildcard patterns to identify auxiliary channels. A pattern is simply checked against a stream ID, the concatenation of NSLC separated by a period.


Default: 0

Type: double

Unit: deg

The minimum distance in degrees from origin to load an unassociated auxiliary channel. Loading a channel / station explicitely (F3) will not respect this setting.


Default: 1000

Type: double

Unit: deg

The maximum distance in degrees from origin to load an unassociated auxiliary channel. Loading a channel / station explicitely (F3) will not respect this setting.


picker.phases.* Phases defined for picking. The phase phases can be selected from the Picking menu of the picker window. Make sure, the locator can handle all defined phases.


Default: P,Pn,Pg,pP,S,Sg,sP

Type: list:string

Phase types available for rapid picking by hot keys and in the Picking menu. Separate the types by comma.


Type: list:string

List of defined phase type profiles to be considered. Separate profiles by comma.


picker.phases.groups.* Definiton of phase type profiles. The profiles and phase types can be selected from the Picking menu of the picker window but not with hot keys.


picker.phases.groups.$name.* $name is a placeholder for the name to be used and needs to be added to picker.phases.groups to become active.

picker.phases.groups = a,b
picker.phases.groups.a = ...
picker.phases.groups.b = ...
# c is not active because it has not been added
# to the list of picker.phases.groups
picker.phases.groups.c = ...

Type: list:string

List of phase types. Separate types by comma.


picker.uncertainties.* Define uncertainty profiles. Once defined, they can be selected in the scolv picker settings [F3]. The profiles override uncertainties defined in “uncertainties”.


Type: list:string

Pick uncertainty profiles to be loaded. The first profile will be used by default.


picker.uncertainties.profile.$name.* $name is a placeholder for the name to be used and needs to be added to picker.uncertainties.preferred to become active.

picker.uncertainties.preferred = a,b
picker.uncertainties.profile.a = ...
picker.uncertainties.profile.b = ...
# c is not active because it has not been added
# to the list of picker.uncertainties.preferred
picker.uncertainties.profile.c = ...

Type: list:string

Unit: s

List of pre-defined pick uncertainties. The format of each list item is either a double value or a pair of double values for asymmetric uncertainties, e.g. "val1","(val2,val3)".


picker.integration.* Settings related to waveform integration which may be required if the desired waveform unit is changed and the sensor data must be integrated once or multiple times.


Type: string

An optional pre-filter which is applied prior to the numerical integration to stabilize the result. This filter is applied for each integration step or just once depending on the parameter "applyOnce". Multiple integrations are necessary if acceleration data should be converted to displacement.


Default: true

Type: boolean

Whether to apply the pre-filter only prior the first integration step or prior to each step.


amplitudePicker.* Parameters controlling the amplitude picker window for computing station magnitudes.


Default: 300

Type: int

Unit: s

Time span in seconds to be added to the left of the used amplitude time window.


Default: 300

Type: int

Unit: s

Time span in seconds to be added to the right of the used amplitude time window.


Type: list:string

A list of filters used for the amplitude picker. Format: "name1;filter-definition1", "name2;filter-definition2"


display.* Display custom information in the Location tab.


display.origin.* Origin information to show. Event comments can be processed by addons or shown in the event list as configured by global parameters.


Type: list:string

Name(s) of quality addon profile(s) to be considered. The profiles provide values through a script which are shown in the location tab. The scolv documentation provides an example script.


display.origin.comment.* Origin comment value to be shown based on its comment ID.

Type: string

ID of the origin comment to be considered.


Type: string

Value to be shown in case no valid origin comment is found.


Type: string

Label of the value to be shown.


display.origin.addon.$name.* $name is a placeholder for the name to be used and needs to be added to display.origin.addons to become active.

display.origin.addons = a,b
display.origin.addon.a.value1 = ...
display.origin.addon.b.value1 = ...
# c is not active because it has not been added
# to the list of display.origin.addons
display.origin.addon.c.value1 = ...

Type: string

Defines the label text of the information panel in the Location tab of the parameter evaluated by this addon.


Type: string

Path to script to execute.

Command-Line Options

scolv [options]


-h, --help

Show help message.

-V, --version

Show version information.

--config-file arg

Use alternative configuration file. When this option is used the loading of all stages is disabled. Only the given configuration file is parsed and used. To use another name for the configuration create a symbolic link of the application or copy it. Example: scautopick -> scautopick2.

--plugins arg

Load given plugins.

--auto-shutdown arg

Enable/disable self-shutdown because a master module shutdown. This only works when messaging is enabled and the master module sends a shutdown message (enabled with --start-stop-msg for the master module).

--shutdown-master-module arg

Set the name of the master-module used for auto-shutdown. This is the application name of the module actually started. If symlinks are used, then it is the name of the symlinked application.

--shutdown-master-username arg

Set the name of the master-username of the messaging used for auto-shutdown. If "shutdown-master-module" is given as well, this parameter is ignored.


--verbosity arg

Verbosity level [0..4]. 0:quiet, 1:error, 2:warning, 3:info, 4:debug.

-v, --v

Increase verbosity level (may be repeated, eg. -vv).

-q, --quiet

Quiet mode: no logging output.

--component arg

Limit the logging to a certain component. This option can be given more than once.

-s, --syslog

Use syslog logging backend. The output usually goes to /var/lib/messages.

-l, --lockfile arg

Path to lock file.

--console arg

Send log output to stdout.


Execute in debug mode. Equivalent to --verbosity=4 --console=1 .

--log-file arg

Use alternative log file.


-u, --user arg

Overrides configuration parameter connection.username.

-H, --host arg

Overrides configuration parameter connection.server.

-t, --timeout arg

Overrides configuration parameter connection.timeout.

-g, --primary-group arg

Overrides configuration parameter connection.primaryGroup.

-S, --subscribe-group arg

A group to subscribe to. This option can be given more than once.

--content-type arg

Overrides configuration parameter connection.contentType.

--start-stop-msg arg

Set sending of a start and a stop message.



List all supported database drivers.

-d, --database arg

The database connection string, format: service://user:pwd@host/database. "service" is the name of the database driver which can be queried with "--db-driver-list".

--config-module arg

The config module to use.

--inventory-db arg

Load the inventory from the given database or file, format: [service://]location .


Do not use the database at all



List all supported record stream drivers.

-I, --record-url arg

The recordstream source URL, format: [service://]location[#type]. "service" is the name of the recordstream driver which can be queried with "--record-driver-list". If "service" is not given, "file://" is used.

--record-file arg

Specify a file as record source.

--record-type arg

Specify a type for the records being read.


--city-xml arg

The path to the cities XML file. This overrides the default paths. Compare with the global parameter "citiesXML".

User interface

-F, --full-screen

Start the application filling the entire screen. This only works with GUI applications.

-N, --non-interactive

Use non-interactive presentation mode. This only works with GUI applications.


-O, --origin arg

Preload origin with given origin ID

-E, --event arg

Preload event with given event ID


Switch to offline mode

-i, --input-file xml

Load events in given XML file during startup and switch to offline mode

--load-event-db arg

Number of days to load from database