The International Seismological Centre (ISC) is a non-governmental, nonprofit organisation charged with the final collection, definitive analysis and publication of global seismicity.

Misassociations and other discrepancies are rectified and the remaining unassociated readings are searched for new events and previously unreported earthquakes are added to the database.

Epicentral locations and hypocentral depths were recalculated from original travel time data using a consistent velocity model.

[6] The IASPEI reference events database contains 9280 earthquakes and explosions whose hypocenters have been located within 10 km or less, often in conjunction with on-site studies ("ground truth").

A valuable listing of papers that avoids problems inherent in most search services of variant place names or spellings, or trivial mentions.