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Earthquakes : Description

GEOSCOPE provides earthquake characteristics and associated data for earthquakes with magnitude larger than 5.5-6, and for smaller earthquakes when located in France or in the Euro-Mediterranean region.

First information related to an earthquake is typically posted 45 minutes after earthquake origin. An update is done later in order to provide access to the data over a ~5h30 long window starting at the earthquake origin time. Data (seismograms) are raw data (not yet validated), and mainly come from real-time protocols. Time is in UTC and epicentral locations are from USGS.

Data and information related to an earthquake include:

  • Since 1st January 2014 : earthquake characteristics determined by SCARDEC method: magnitude, depth, focal mechanism and source time function. The agreement between real and modelled data is also shown. For the 2011-2013 period, the near-real time analysis of the earthquakes with the SCARDEC method is available Geoazur laboratory website.
  • Earthquake localization maps in the context of historical seismicity
  • SEED file (and description of its content), built from continuous data of the operational stations
  • Theoretical arrival times (P, PP, PcP,PKP,S,ScS, SKS) at GEOSCOPE stations
  • Graphics of the BH and LH channels for each station
  • Schematic view of the earthquake mechanism (Since 1st January 2014)

For some earthquakes, additional information provided by other institutes/organisms is provided.

Earthquake catalogues are available from 2006. In the 2006-2013 period, there is no access to SCARDEC information.

Several e-mail alerts are available, as soon as a new earthquake has been analyzed: (1) for all earthquakes, (2) for earthquakes with Mw>=6.5, and (3) for earthquakes with Mw>=7.

Please contact Martin Vallée (This email address is being protected from spambots. You need JavaScript enabled to view it.) to be added in one of these mailing lists.