EL seismological software

EL (Events Locator) is main software we use to process seismological data. See also illustrations of EL. It solves the following tasks:

• Quick access to the disk loop of Apatity and Apatity array data (see. Seismic network, data processing for AP0 and APA stations;
• Automatic detection and location of seismic events and saving their recordings to data base. The location algorithm is close to Generalized Beamforming approach : it makes a maximization of rating function in cells of earth-distributed grid. The grid shape is modified adaptively several times. (See illustration);
• Manual processing of seismic events:
  • Data filtration See example
  • Plotting spectra and sonograms
  • Computing backazimuth by arrays using beamforming (See example)
  • Computing array backazimuth by time shifts between channels (See example)
  • Polarization analysis by 3C stations (See example)
• Manual location of seismic events (by P,S, Rg onsets):
  • Arc method
  • With respect to reference event
  • By Generalized Beamforming method
• Analysis of location errors travel time models discrepancies
• Support of seismic events data base:
  • The data base contains wave forms and extra information
  • It has a language for search and select seismic events
  • System of reports generation
  • Mapping (See example)

The EL software is described in more details in Asming Ph.D thesis, see Publications.