pysep.utils.llnl#

Specific functions related to Lawrence Livermore National Lab waveform and catalog data

Module Contents#

Functions#

return_llnl_catalog_origin_times([event])

Returns a static LLNL catalog which provides origin times and event tags

scale_llnl_waveform_amplitudes(st)

Rescale amplitudes for LLNL data. The scales are different for different
pysep.utils.llnl.return_llnl_catalog_origin_times(event=None)[source]#

Returns a static LLNL catalog which provides origin times and event tags

Parameters:

event (str) – returns only a specific event based on the event names

Return type:

dict

Returns:

a dictionary where keys are event names (uppercase) and values are catalog origin times (UTCDateTime)

pysep.utils.llnl.scale_llnl_waveform_amplitudes(st)[source]#

Rescale amplitudes for LLNL data. The scales are different for different channels.

Note

Old factors BB = 4.0e-4 HF = 1.8e-2 HF = 1.8e-4

Note

scales based on tests with events HOYA, BEXAR * LL.HOYA..LH? and LL.HOYA..BB? require a sign flip. Otherwise the

surface waveform inversions produce a -ISO result.

  • LL.HOYA..LH? and LL.HOYA..BB? body do not require flip.

Parameters:

st (obspy.core.stream.Stream) – Stream containing LLNL waveforms

Return type:

obspy.core.stream.Stream

Returns:

Stream with scaled LLNL waveforms