What we do ISC Membership Projects

The main purpose of the ISC is to compile the ISC Bulletin, regarded as the definitive record of the Earth's seismicity. Data is collected from over 130 agencies worldwide and is available online soon after being received. The Reviewed ISC Bulletin is typically available 24 months behind real-time and is manually checked by ISC analysts. With sufficient data events in the Reviewed ISC Bulletin are relocated using the ISC location algorithm (ISCloc).

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Membership of the ISC is open to any scientific academy, governmental agency, research institution or other non-profit organisation. All members are represented on the  Governing Council , which determines the general policies of the Centre. Any commercial organisation with an interest in the objectives and/or output of the Centre may become an associate member (sponsor). Please  contact us  if you are interested in ISC membership.

List of current members and sponsors.

ISC itself is a member of Willis Research Network.

  • Advancement of the ISC-GEM Catalogue - adding fault plane solutions, smaller earthquakes and missing station data.
  • Rebuild of the ISC Bulletin - recomputing the entire ISC Bulletin using ak135 with the updated ISCloc. The rebuilt bulletin will also include many additional data.
  • CTBTO link to the ISC database - only available to States Parties of the Comprehesive Test Ban Treaty (CTBT), the link is a collection of tools for analysing the ISC datasets.
  • ISC Focal Mechanisms - automatic focal mechanism solutions based on first motion polarities from the ISC Bulletin and auto-picked polarities from available waveforms.

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Data access Provide data to ISC ISC Event Bibliography

The ISC provides full access to data within the  ISC Bulletin. Data include hypocentre locations, phase data, amplitude measurements, focal mechanism solutions, etc. Please use one of the search pages.

The ISC also hosts the International Registry of Seismograph Stations (IR), the IASPEI Ground Truth reference events (GT) and the EHB Bulletin.

Use of data from the ISC should always be cited. Please check our citation page for more information.

Data centres and seismological agencies are encouraged to provide their data to the ISC according to the contribution schedule. We collect all earthquake parametric data, including phase readings, hypocentre locations, focal mechanism solutions, etc.

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data capture flow-chart

The ISC encourages its users to check for missing references/event links in the Event Bibliography.

Use our search for checking the availability of specific papers and notify us with missing references/event links via the submission page.

Learn more about the Event Bibliography here.