Thread: Event webservice (version 1.1.0) release

Started: Oct. 5, 2011, 11:05 a.m.
Last activity: Oct. 5, 2011, 11:05 a.m.
Topics: Web Services
Yazan Suleiman
Oct. 5, 2011, 11:05 a.m.
Hello webservice users,

The DMC is pleased to announce the release of the ws-event webservice (version 1.1.0).

The event web service returns event information in the QuakeML format (schema 1.2 RC3). As with most of our other webservices, ws-event accepts simple HTTP GET query parameters. Events may be selected based on location, time, catalog, contributor and internal identifiers.

The IRIS DMC receives earthquake location and magnitude information primarily from the USGS NEIC and the ISC, other sources include the Global CMT project and the USArray ANF.

Example Usage

The FetchEvent Perl script available at can be used to fetch event information from ws-event, parse the returned results and print the information as simple ASCII.


A detailed description of the webservice can be found by visiting

As with other IRIS webservices, we provide a URL "Builder" webpage form intended to facilitate the understanding calling conventions:

Links to the help and the builder are available from the main ws-event page, which contains detailed parameter usage.


IRIS Web Services Team.