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Earthquake fatalities and potency

Author

Listed:
  • Max Wyss

    (International Centre for Earth Simulation (ICES Foundation))

  • Michel Speiser

    (International Centre for Earth Simulation (ICES Foundation))

  • Stavros Tolis

    (International Centre for Earth Simulation (ICES Foundation))

Abstract

We have compiled a new catalogue of earthquake fatalities for the world, covering the period 856 BC to March 2022, listing 2795 reports. We estimate that the reporting of fatal earthquakes is complete for events with more than 16 fatalities since 1927. The total number of fatalities recorded is 8,336,526. 117 countries have reported at least one earthquake with one fatality or more. 77 and 52 countries have reported more than 100 and 1000 earthquake fatalities, respectively. Caution has to be exercised in estimating what earthquake disasters are in store for a given country because the 95 year period of high quality recording is about an order of magnitude shorter than return times of great earthquakes. Nevertheless, we introduce the earthquake potency for a country, defined as the sum of recorded fatalities divided by the number of earthquakes that it took to accumulate them, which equals the average earthquake disaster size in a given country, in units of fatalities per event. Potency is listed based on all known fatal earthquakes and also based on those since 1927. Both lists have their shortcomings, but provide estimates of what size of future earthquake disaster is likely in store for a particular country. For rescue purposes, it is important to realize that small earthquake, M 5 ± 0.5, can cause significant numbers of fatalities.

Suggested Citation

  • Max Wyss & Michel Speiser & Stavros Tolis, 2023. "Earthquake fatalities and potency," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 119(2), pages 1091-1106, November.
    • Handle: RePEc:spr:nathaz:v:119:y:2023:i:2:d:10.1007_s11069-022-05627-x
    DOI: 10.1007/s11069-022-05627-x
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