Events shown have been associated with the availability of legacy seismic data that has been converted to digital images or in same cases digital time series. Data maybe downloaded or available upon request.
See the corresponding organization for more information.
See monitoring for events related to nuclear testing.
SCSN: M> 3.5 earthquakes recorded by the Southern California Seismographic Network between 1963-1992.
Seismo Archives: Earthquakes as part of the International Digital Earthquake Archives.
WWSSN: M≥6 earthquakes recorded by the Worldwide Standardized Seismographic Network.
Not mapped above is the Earthquake Catalogue from the EuroSeismos project with a list of 629 earthquakes from the Euro-Mediterranean region from 1895-1990.
Photo credits: Earth cracks - Martin Duff CC BY-SA 2.0