: 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.
: For year-specific analysis (e.g., the 2002 or 2019/2020 periods), the SED publishes annual summaries available on the ETH Zurich Research Collection . Download ECOS pdf
The SED provides different ways to access this data depending on your needs: : The project reassessed over 600 historical events,
: A detailed PDF explaining the methodology and catalogue format can be found on ResearchGate or directly via the SED Appendix L . the 2002 or 2019/2020 periods)
: Unlike older records, ECOS provides a uniform estimate of moment magnitude ( MWcap M sub cap W ) for all events, allowing for consistent hazard modeling.