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seismo-ml-models-integration

seisan/earthworm integration scripts to process seismology data using machine learning models

Quick Example

git clone https://github.com/Syler1984/seismo-ml-models-integration
cd seismo-ml-models-integration
pip install --user -r requirements.txt
python archive_scan.py --start YYYYMMDD --end YYYYMMDD

Note: required python == 3.8

Quick setup guide

Install the programm

git clone https://github.com/Syler1984/seismo-ml-models-integration
cd seismo-ml-models-integration
pip install --user -r requirements.txt

Specify archives to scan

List of archive stations to scan is read from MULPLT.DEF file. Default search path is data/MULPLT.DEF but if file is not found there, program will look up $SEISAN_TOP/DAT/MULPLT.DEF.

To set a custom list of archive channels for a scan, you can create a data/MULPLT.DEF. Example can be found in data/EXAMPLE_MULPLT.DEF.

Run archive_scan.py

This will run a scan using Seismo-Performer model for the October 1st 2021:

python archive_scan.py --start 20211001 --end 20211002

Date format is YYYYMMDD or YYYYMMDDTHHmmss, e.g. running a scan for a two hours window:

python archive_scan.py --start 20211001T10:00:00 --end 20211002T12:00:00

Using different NN models

Three models are supported by default and can be specified via command-line options:

--cnn - Seismo CNN model.
--gpd - GPD (Generalized Phase Detection) or ConvNet.
no model flag or --favor - Seismo-Performer.

It is also possible to provide a custom model, see more at Custom models section. Or see at Model configuration at how to set models through config file, including usage of different models for different stations.

Full setup guide

Configuring the stations

MULPLT.DEF

Default search path is /data/MULPLT.DEF. You can supply different path through --mulplt-def <path> option, or by using configuration file option:

mulplt-def = <path>

If no MULPLT.DEF file found, program will look for $SEISAN_TOP/DAT/MULPLT.DEF file instead.

Note, that neither name MULPLT.DEF or extension .DEF are specifically required, you can provide any file as long as it has station channels definitions like following:

DEFAULT CHANNEL NYSH EN Z

DEFAULT CHANNEL serves as an indicator for a channel to scan, followed by a station name and a component information. Unlike standard MULPLT.DEf, precise character positions does not matter as long as words are separated by any amount of whitespaces.

Channel order

Default Seismo-Performer, Seismo-CNN and GPD models require three-channel input. Channel order can be configured by using either --channel-order <channels> command line option, or through

channel-order = <channels>

<channels> is a string (without whitespaces) of separate channel order arrangements, each arrangement consists of components separated by a comma, e.g. N,E,Z. Arrangements are separated by a semi-column, e.g. N,E,Z;1,2,Z.

Later, station archives are passed to a NN model in the first channel order, which can describe specified station archives.

For example, with MULPLT.DEF being:

DEFAULT CHANNEL STAT1 SH Z
DEFAULT CHANNEL STAT1 SH N
DEFAULT CHANNEL STAT1 SH E

DEFAULT CHANNEL STAT2 EH 1
DEFAULT CHANNEL STAT2 EH 2
DEFAULT CHANNEL STAT2 EH Z

DEFAULT CHANNEL STAT3 EH Z

And channel-order = N,E,Z;1,2,Z;Z,Z,Z

STAT1 would be passed to NN model in order N, E and Z. STAT2 would be passed in order 1, 2 and Z. And a single STAT3 channel would be tripled and passed to a model (order Z, Z, Z).

Note, that if you flip order of arrangements like that: channel-order = Z,Z,Z;N,E,Z;1,2,Z, than STAT1, STAT2 and STAT3 all be passed as Z, Z and Z, because Z,Z,Z arrangement would have the highest priority and all three stations fit that arrangement.

Default channel-order is N,E,Z;1,2,Z;Z,Z,Z, so there is no need to specify it, unless extra arrangements are required.

Note, that all default models trained on data with Z channal being the last one, so it is recommended to keep that order in custom arrangements.

Detailed configuration

In archive_scan.py .ini config file, provided via --config PATH option, station-specific options (eg filtering, output, channel order, ...) might be written.

In order to configure individual station, simply write a new section with station name. Example of station section can be found in data/config.ini:

[ARGI]
no-filter = true
out = predictions_argi.txt

Model configuration

WIP

Custom models

WIP

Advanced search

With flag --advanced-search (or option advanced-search = true in config file) enabled, for every detected event (detected event is a combination of closely packed detection with number of events greater or equal detections-for-event parameter value) additional scan will be performed. This scan could have different threshold and window shift to extract more detailed information about event.

Note: scan will be performed only on stations on which detections were found (you can change that behaviour).

List of related command line options / parameters:

  • --advanced-search - enable advanced search
  • --advanced-search-range <number> - range of search (in seconds) around detected events, default: 30
  • --advanced-search-threshold <threshold> - threshold for advanced search, could be set just like regular --threshold: with number from 0 to 1.0 or for p and s labels individually, default: 0.9
  • --advanced-search-shift <number> - window shift for advanced search (in samples), default: 2
  • --advanced-search-combine - if specified (or set in config: advanced-search-combine = true) will combine all detections in advanced search as single event, otherwise will use normal event combination method. Without this option enabled, if advanced-search-range is larger than combine-events-range, advanced search for a single event could potentially yeild multiple events.
  • --advanced-search-all-stations - with this option enabled the scan will be performed on full list of stations (same as for the original scan), otherwise, only stations with detected wave arrivals will be used for the advanced search.

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