: A detailed PDF explaining the methodology and catalogue format can be found on ResearchGate or directly via the SED Appendix L .
The SED provides different ways to access this data depending on your needs: Download ECOS pdf
: The project reassessed over 600 historical events, identifying 177 that caused significant damage (Intensity VI or higher) and removing roughly 260 "fake" or duplicate entries caused by historical recording errors. : A detailed PDF explaining the methodology and
The , maintained by the Swiss Seismological Service (SED) , is the authoritative dataset for seismic hazard assessment in the region. The most common downloadable version is ECOS-09 (released in 2011), which provides a comprehensive record of seismic activity from 250 AD through 2008. Key Features of the ECOS PDF & Dataset The most common downloadable version is ECOS-09 (released
: It covers Switzerland and surrounding regions (43–51°N and 3–13°E), merging data from 15 separate national and international catalogues.