Earthquake Catalogs

Earthquake catalogs are collections of earthquakes and their key parameters (e.g. origin time, location, depth, magnitude, etc.)

USGS PDE catalog

PDE catalog stands for Preliminary Determination of Epicenters, produced by the National Earthquake Information Center (NEIC) of the US Geological Servey (USGS). The determination of earthquake properties is automatic and almost real-time. Thus, USGS PDE catalog may be the earliest one to give information of an earthquake occurred a few minutes ago.

• Homepage: https://earthquake.usgs.gov/data/pde.php
• Search: https://earthquake.usgs.gov/earthquakes/search/
• Time range: 1964 – now

ISC catalog

ISC (International Seismological Centre) catalog is usually considered to be the final catalog of global earthquake data. It contains data from 1900 to now. In ISC catalog, earthquake information are automatically determined, and then manually inspected by ISC analysts and relocated if possible. The manually reviewed ISC catalog is typically 24 months behind real-time. Currently (in 2019), only the earthquake information from 1900 to 2016 are manually reviewed.

• Homepage: http://www.isc.ac.uk/iscbulletin/
• Search: http://www.isc.ac.uk/iscbulletin/search/catalogue/

ISC-EHB catalog

The ISC-EHB is a dataset of teleseismically well constrained events. ISC-EHB is a groomed version of the ISC catalog. Earthquake information in this catalog is more accurate. It is suitable for seismicity studies and tomographic inversion, but not for seismic hazard studies as the catalog is incomplete.

• Homepage: http://www.isc.ac.uk/isc-ehb/
• Search: http://www.isc.ac.uk/isc-ehb/search/
• Time range:1960 - 2015