Searching the ISC Bulletin
Please consider the ISC mirror server hosted at IRIS DMC as it may be faster.
To search the ISC Bulletin, there is a standard 'Bulletin search' page. Additional search pages provide access to specific datasets within the Bulletin.
Each search page has the option to define a search region using a Google Maps interface on an interactive page.
The ISC also provides a web services page, to provide guidance on constructing URLs manually, to help access data without a browser i.e. through a programming interface. The results may be streamed to the user using QuakeML (XML format) to simplify the parsing of data.IASPEI Seismic Format or QuakeML. These data include:
- hypocentres - both the prime (preferred) origin and secondary estimates;
- focal mechanism solutions;
- phase/arrival data.
- only the prime (preferred) hypocentre for an event is output;
- magnitudes for events may be limited to specific authors (e.g. ISC, NEIC, GCMT).
- specific phase names (e.g. P, PKPdf, S etc.);
- arrival-times (N.b. amplitude data do not always have arrival-times);
- travel-time residuals (from ak135);
- time-defining phases - phases used in the computation of the prime hypocentre;
- scalar moments (and Mw);
- moment tensor components;
- nodal planes (i.e. strike, dip and rake);
- principal axes;
- hypocentre parameters for each focal mechanism solution.