To search the ISC-EHB, there is a standard 'Bulletin search' page. Additional search pages provide access to specific datasets within the ISC-EHB Bulletin (e.g. an event catalogue or phase data).

Each search page has the option to define a search region using a Google Maps interface on an interactive page.

Bulletin search

The Bulletin search may be used to output a bulletin of event data in IASPEI Seismic Format or QuakeML. These data include:

• hypocentres - both the prime (ISC-EHB) origin and secondary (ISC) estimates;
• magnitudes;
• phase/arrival data;

Event catalogue

Outputs a catalogue of events only showing the prime (ISC-EHB) hypocentre for each event. The output can either be a CSV file (one line per event) or a QuakeML stream:

• only the prime (ISC-EHB) hypocentre for an event is output;
• magnitudes are also output where available.

Arrivals

Searches the ISC-EHB Bulletin for arrival (phase) data by station(s) and events. The search outputs the arrivals as either a CSV file (one arrival per line), in IMS1.0 'associated:arrivals' format, or QuakeML. Searches may limit data to only include arrivals with:

• specific phase names (e.g. P, PKPdf, S etc.);
• time-defining phases - phases used in the computation of the ISC-EHB hypocentre.