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

Default: LOCATION

Type: string

Location group where origins will be sent to.

Note

grid.* General grid parameters applied to all grids.

grid.x

Default: 50

Type: int

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

grid.y

Default: 50

Type: int

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

grid.gradient

Default: 0:00000000,0.2:0000ff80,0.4:00ffff,0.6:00ff00,0.8:ffff00,1:ff0000

Type: gradient

The color gradient used to color the ATF grid.

grid.shading

Default: true

Type: boolean

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

Note

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

atf.unit

Default: s/deg

Type: string

The unit of the ATF grid. Allowed values:

“s/deg” (seconds per degree),

“s/km” (seconds per kilometer)

“k” (wavenumber: 2Pi/km).

atf.minRangeX

Default: -50

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”.

atf.minRangeY

Default: -50

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”.

atf.maxRangeX

Default: 50

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”.

atf.maxRangeY

Default: 50

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”.

atf.minFrequency

Default: 1

Unit: Hz

Type: double

The minimum frequency to compute the ATF for.

atf.maxFrequency

Default: 1

Unit: Hz

Type: double

The maximum frequency to compute the ATF for.

atf.frequencySteps

Default: 1

Type: int

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

Note

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

proc.targetSampleRate

Default: 200

Unit: sps

Type: double

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

proc.maximumChannelDelay

Default: 5

Unit: s

Type: double

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.

proc.timeWindow

Default: 2

Unit: s

Type: double

The processing time window.

proc.timeStep

Default: 1

Unit: s

Type: double

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

proc.noiseWindow

Default: 0

Unit: s

Type: double

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

proc.semblanceTriggerOn

Default: 0.7

Type: double

The value that must be exceeded to activate triggering.

proc.semblanceTriggerOff

Default: 0.7

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.

proc.deadMargin

Unit: %

Type: double

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

Default: true

Type: boolean

Plot the channel count graph in the processing window.

proc.plot.backazimuth

Default: true

Type: boolean

Plot the back azimuth graph in the processing window.

proc.plot.semblance

Default: true

Type: boolean

Plot the semblance graph in the processing window.

proc.plot.velocity

Default: true

Type: boolean

Plot the velocity graph in the processing window.

proc.plot.detection

Default: true

Type: boolean

Plot the detection graph in the processing window.

Note

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

loc.minimumLatitude

Unit: deg

Type: double

Minimum latitude of the grid.

loc.maximumLatitude

Unit: deg

Type: double

Maximum latitude of the grid.

loc.minimumLongitude

Unit: deg

Type: double

Minimum longitude of the grid.

loc.maximumLongitude

Unit: deg

Type: double

Maximum longitude of the grid.

loc.depth

Unit: km

Type: double

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

Unit: s

Type: double

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

pmcc.backazimuthDifference

Unit: deg

Type: double

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

pmcc.slownessDifference

Unit: s/deg

Type: double

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

Default: 2.0

Unit: s

Type: double

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.

spectrogram.windowOverlap

Default: 0.5

Unit: ratio

Type: double

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.

spectrogram.taperLength

Default: 0.05

Unit: ratio

Type: double

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.

spectrogram.normalize

Default: false

Type: boolean

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

spectrogram.logScale

Default: false

Type: boolean

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

spectrogram.smoothTransform

Default: false

Type: boolean

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

spectrogram.lowerBound

Default: -15

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.

spectrogram.gradient

Default: 0:00000000,0.2:0000ff,0.4:00ffff,0.6:00ff00,0.8:ffff00,1:ff0000

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.

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

or

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.