Seismic Discrete Raw
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Data
Strong motion seismometers (accelerometers) that do not stream its raw waveform data to IRIS contain a local buffer for storing this data. Usually this raw waveform data is not archived in Oceans 2.0 due to insufficient bandwidth, which is currently the case for most land sites part of the Cascadia Earthquake Early Warning system. However, when data specialists or scientists require investigation of a particular detection or troubleshooting software or instrument issues, the raw waveform data is downloaded from this instrument via an FTP server and later archived in Oceans 2.0. The "Discrete Raw Seismic Data" format contains these files.
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