Earthquake catalog ECOS-09

ECOS-09 (Earthquake Catalog of Switzerland 2009) is the current earthquake catalog of Switzerland. It integrates the following basic information:

• The Macroseismic Earthquake Catalog of Switzerland, with events from AD 250, revised and supplemented to 2008;
• Yearly reports of the Swiss earthquake commission since 1879;
• Earthquake locations of the instrumental networks of the SED since 1975;
• Supplemented by 12 earthquake catalogs from neighboring and international agencies.

The macro-seismic part of the catalog is based on the analysis of observed and historical impacts of earthquakes on people and the environment. The epicenters and earthquake magnitudes are estimated from this information. The instrumental part of the catalog is based on the analysis of measured ground-motion, from which the location of the epicenter and the magnitude can be directly computed. ECOS-09 covers the period AD 250 to the end of 2008. The available data covers Switzerland and bordering regions (Swiss coordinates (km): 460-882 / 20-350; geographical coordinates approx.: 5.6-11.1E / 45.4-48.3N). Hours are given in UTC (Coordinated Universal Time).

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