Seismicity information from the CEA In matters of seismology, the Environmental Assessment and Monitoring Department (DASE) of the Military Applications Division (DAM) passes on its information to the relevant supervisory authorities. It also works for both public and private bodies and various clients. Four types of information are available: alerts, periodic bulletins, specific studies and database inquiries.   Alerts   Alerts are information sent to clients within a very short space of time: Alert for strong earthquakes in France and border countries, requested by the French civil security service, Alert for strong earthquakes in the Euro-Mediterranean area, for European Council requirements, Specific alerts in the context of facility monitoring in the case of local earthquakes (CEA centers, TGV Méditerranée high-speed train, etc.). In addition to the main recipients, the information concerning events processed within this framework is also made available to the entire seismology community.   Periodic bulletins   Bulletins are catalogs of earthquakes recorded in France's network. They are published every week, for the period running from the Wednesday to the following Tuesday: A local and regional earthquake bulletin, containing epicenter coordinates and the magnitudes of earthquakes recorded within 1500 km of the network, A teleseismic bulletin of earthquakes with more distant epicenters. Our clients are both French and overseas seismology bodies, and in particular clients of the International Seismological Centre, and the National Earthquake Information Center (ISC, NEIS). Their role is to collate the collected data. Additions and adjustments are made to the information in these bulletins thanks to year-round monitoring which is also used to optimize the annual bulletins published at the beginning of the year. These documents are sent by email or in hardcopy. Specific bulletins are also published for particular clients. In addition to natural seismicity, they can contain any quarry blasts or other events caused by industrial activity. The event type is identified, however.   Specific studies   With high magnitude earthquakes, a more in-depth study is carried out. In addition to more detailed location based on all the available data (including data obtained from other bodies), this type of study provides a map showing the epicenters with respect to earthquakes in the region, possibly including the focal process, as well as any other available information. The following map shows, in relation to regional geology and seismicity, the epicenter of the Saint-Dié earthquake (ML=5.5), one of the strongest recorded in mainland France in the last decade. Map issued following a particularly interesting earthquake (Saint-Dié, 22/02/2003).   Database inquiries   The AutoDRM (Automatic Data Request Manager) is a standard tool authorizing access to the CEA/DAM database. Access is based on codified queries which are emailed by pre-registered clients. Queries concern both parametric data (locations, arrival times, etc.) and waveforms. Answers are sent back by email within a very short space of time.