The FISSURES project developed from an initiative by IRIS to improve earth scientists' efficiency by developing a unified environment that can provide interactive or programmatic access to waveform data and the corresponding metadata for instrument response, as well as station and channel inventory information. FISSURES was developed using CORBA (Common Object Request Broker Architecture) as the architecture to implement a system-independent method for the exchange of this binary data. The IRIS DMC developed a series of services, referred to as the Data Handling Interface (DHI), using the FISSURES architecture to provide waveform and metadata from the IRIS DMC.
The NCEDC has implemented the FISSURES Data Handling Interface (DHI) services at the NCEDC, which involves interfacing the DHI servers with the NCEDC database schema. We started with the source code for the IRIS DMC's DHI servers, which reduced significantly the implementation's time. We now have the waveform and event FISSURES services running in demonstration mode at the NCEDC. These services interact with the NCEDC database and data storage system, and can deliver NCEDC event and channel metadata as well as waveforms using the FISSURES interfaces. We have installed the FISSURES DHI servers, and worked with the IRIS DMC in 2003-2004 to register with the FISSURES naming services which are run at both the IRIS DMC and the NCEDC.
Berkeley Seismological Laboratory
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