lambda¶

Array processing GUI

Description¶

Module Configuration¶

etc/defaults/global.cfg
etc/defaults/lambda.cfg
etc/global.cfg
etc/lambda.cfg
~/.seiscomp/global.cfg
~/.seiscomp/lambda.cfg

lambda inherits global options.

Note

Modules/plugins may require a license file. The default path to license files is @DATADIR@/licenses/ which can be overridden by global configuration of the parameter gempa.licensePath. Example:

gempa.licensePath = @CONFIGDIR@/licenses

arrays¶

Type: list:string

Array profile names referring to the defined arrays. The actual arrays are defined in the arrays section.

fdsnwsUrl¶

Type: string

URL to FDNSWS for fetching event parameters.

phases¶

Type: list::string

Available phase names for picking.

connection.locationGroup¶

Type: string

Location group where origins will be sent to. Default is LOCATION.

Note

grid.* General grid parameters applied to all grids.

grid.x¶

Type: int

The number of grid nodes in X direction. Note that this value will be increased by one in the final computation. Default is 50.

grid.y¶

Type: int

The number of grid nodes in Y direction. Note that this value will be increased by one in the final computation. Default is 50.

grid.gradient¶

Type: gradient

The color gradient used to color the ATF grid. Default is 0:00000000,0.2:0000ff80,0.4:00ffff,0.6:00ff00,0.8:ffff00,1:ff0000.

grid.shading¶

Type: boolean

Set the shading of 2D color plots plot such as F-K plots. Default is true.

Note

atf.* Parameters for computing the array response function (ATF). Also used for data processing by different methods.

atf.unit¶

Type: string

The unit of the ATF grid. Allowed values:

“s/deg” (seconds per degree),

“s/km” (seconds per kilometer)

“k” (wavenumber: 2Pi/km). Default is s/deg.

atf.minRangeX¶

Type: double

The lower value of the X range of the ATF computation grid. This value is either in slowness or wavenumber, depending on the unit setting. The unit is given by the configuration parameter “unit”. Default is -50.

atf.minRangeY¶

Type: double

The lower value of the Y range of the ATF computation grid. This value is either in slowness or wavenumber, depending on the unit setting. The unit is given by the configuration parameter “unit”. Default is -50.

atf.maxRangeX¶

Type: double

The upper value of the X range of the ATF computation grid. This value is either in slowness or wavenumber, depending on the unit setting. The unit is given by the configuration parameter “unit”. Default is 50.

atf.maxRangeY¶

Type: double

The upper value of the Y range of the ATF computation grid. This value is either in slowness or wavenumber, depending on the unit setting. The unit is given by the configuration parameter “unit”. Default is 50.

atf.minFrequency¶

Type: double

Unit: Hz

The minimum frequency to compute the ATF for. Default is 1.

atf.maxFrequency¶

Type: double

Unit: Hz

The maximum frequency to compute the ATF for. Default is 1.

atf.frequencySteps¶

Type: int

The number of frequencies to be generated between minFrequency and maxFrequency. Default is 1.

Note

proc.* Parameters for controlling the data processing. Used by different methods, e.g. slowness/wavenumber analysis or backprojection.

proc.targetSampleRate¶

Type: double

Unit: sps

The common sample rate for all array elements. Channels that do not match this sample rate will be resampled. Default is 200.

proc.maximumChannelDelay¶

Type: double

Unit: s

The maximum channel delay allowed before a particular channel is reset and processing is continued with all remaining channels. This value is always with respect to the latest sample of each channel in the array. Default is 5.

proc.timeWindow¶

Type: double

Unit: s

The processing time window. Default is 2.

proc.timeStep¶

Type: double

Unit: s

The processing time step. After a time window has been processed, the window is shifted by this value. Default is 1.

proc.noiseWindow¶

Type: double

Unit: s

The noise window added before the detection, e.g. to calculate the SNR. Default is 0.

proc.semblanceTriggerOn¶

Type: double

The value that must be exceeded to activate triggering. Default is 0.7.

proc.semblanceTriggerOff¶

Type: double

Once the semblance trigger is activated, the maximum semblance is collected until the value drops below this value. The maximum between on and off is used to find the pick on the beam. Default is 0.7.

proc.deadMargin¶

Type: double

Unit: %

Margin on the beam trace where the phase picker is inactive.

proc.minimumSNR¶

Type: double

Minimum SNR to declare a pick on a beam trace.

Note

proc.plot.* Control plotting of parameters in the result parameter plot.

proc.plot.channelCount¶

Type: boolean

Plot the channel count graph in the processing window. Default is true.

proc.plot.backazimuth¶

Type: boolean

Plot the back azimuth graph in the processing window. Default is true.

proc.plot.semblance¶

Type: boolean

Plot the semblance graph in the processing window. Default is true.

proc.plot.velocity¶

Type: boolean

Plot the velocity graph in the processing window. Default is true.

proc.plot.detection¶

Type: boolean

Plot the detection graph in the processing window. Default is true.

Note

loc.* Parameters for locating by backprojection on a location grid.

loc.minimumLatitude¶

Type: double

Unit: deg

Minimum latitude of the grid.

loc.maximumLatitude¶

Type: double

Unit: deg

Maximum latitude of the grid.

loc.minimumLongitude¶

Type: double

Unit: deg

Minimum longitude of the grid.

loc.maximumLongitude¶

Type: double

Unit: deg

Maximum longitude of the grid.

loc.depth¶

Type: double

Unit: km

Source depth.

loc.phase¶

Type: double

Phase hint. Used to extract the respective traveltime tables.

Note

pmcc.* Parameters controlling the PMCC analysis.

pmcc.consistencyThreshold¶

Type: double

Upper limit of consistency for forming a pixel.

pmcc.minimumChannels¶

Type: int

Pixel: Minimum number of contributing waveform channels for forming a pixel.

pmcc.minimumSemblance¶

Type: double

Pixel: Minimum semblance of contributing channels for forming a pixel.

pmcc.minimumPixels¶

Type: int

Families: Minimum number of pixels for forming a family.

pmcc.timeDifference¶

Type: double

Unit: s

Families: Difference in time between 2 pixels to be considerd for forming a family.

pmcc.backazimuthDifference¶

Type: double

Unit: deg

Families: Difference in backazimuth between 2 pixels to be considerd for forming a family.

pmcc.slownessDifference¶

Type: double

Unit: s/deg

Families: Difference in slowness between 2 pixels to be considerd for forming a family.

pmcc.exportScript¶

Type: path

A script called after exporting a PMCC family to XML. The only parameter passed to the script is the XML file.

pmcc.exportPath¶

Type: path

The path used by default to export PMCC families to. If the path does not exist it will be created.

spectrogram.windowLength¶

Type: double

Unit: s

The length in seconds of the data time range which for which the spectrum is computed. The data time range is centered around each processing step. Default is 2.0.

spectrogram.windowOverlap¶

Type: double

Unit: ratio

The processing time step expressed as ratio with respect to the data window length. The default values result in a time step of one second. Default is 0.5.

spectrogram.taperLength¶

Type: double

Unit: ratio

The sinus taper length expressed as ratio with respect to the data window length applied at either end of the data. The default values result in a taper length of 0.1 second. Default is 0.05.

spectrogram.normalize¶

Type: boolean

Whether to normalize the rendered spectrogram with respect to the amplitudes range per processing step or not. Default is false.

spectrogram.logScale¶

Type: boolean

Whether to use logarithmic scale or not for the frequency range. Default is false.

spectrogram.smoothTransform¶

Type: boolean

Whether to render the spectrogram with interpolated colors on screen between processing steps or not. Default is false.

spectrogram.lowerBound¶

Type: int

The spectrogram colors are being generated from the logarithm to base 10 of the power spectrum of the input data converted to ground motion (log10(real*real+imag*imag)). This parameter declares the lower bound which is mapped to the first color of the color gradient unless normalization is enabled. Default is -15.

spectrogram.gradient¶

Type: gradient

The color gradient used to color spectrogram. The color range is actually not important and will be scaled to the minimum and maximum amplitudes (normalize=true) or to the given lower and upper bound. Default is 0:00000000,0.2:0000ff,0.4:00ffff,0.6:00ff00,0.8:ffff00,1:ff0000.

Note

arrays.* Configure one ore more arrays.

Note

arrays.$name.* Define the array. $name is a placeholder for the name to be used and needs to be added to arrays to become active.

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

arrays.$name.channels¶

Type: list:string

Defines a list of channels to use. E.g.

CX.PB01..HHZ, CX.PB02..HHZ, CX.PB03..HHZ

CX.PB01.:00.HHZ, CX.PB02.10:20:30, CX.PB03..HHZ, CX.PB04..

The latter gives preference to the first occurrence of listed parameters separated by “:”. Here the list contains location codes.

Command-Line Options¶

Generic¶

-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.

-D, --daemon¶: Run as daemon. This means the application will fork itself and doesn’t need to be started with &.

--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.

Messaging¶

-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.

--start-stop-msg arg¶: Set sending of a start and a stop message.

Verbosity¶

--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.

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

--log-file arg¶: Use alternative log file.

Database¶

--db-driver-list¶: 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 .

Records¶

--record-driver-list¶: 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.

lambda¶

Description¶

Module Configuration¶

Command-Line Options¶

Generic¶

Messaging¶

Verbosity¶

Database¶

Records¶

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