Over 300 seismic instruments in Southern California collect hypocentral, phase, and digital waveform information. The earthquake catalog includes data from 1932 through the present, with completeness varying by magnitude threshold over specific time periods. The data is maintained by SCIOPS and accessible via web and FTP.
Use Cases
- Analyze earthquake magnitude completeness trends based on the catalog's stated completeness thresholds for M3.0 since 1932 and M1.8 since 1981.
- Study aftershock sequences, such as the Northridge earthquake, based on the mention of processed aftershocks.
- Model seismic waveforms based on the availability of digital waveform data.
- Investigate temporal patterns of hypocentral information based on the catalog's coverage from 1932 to the present.
Strengths
- Catalog spans over 90 years, from 1932 through the present.
- Data collection involves over 300 seismic instruments.
- Catalog completeness is documented for specific magnitude thresholds and time periods, such as M1.8 since 1981.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to nasa_earthdata, being limited to Southern California.
Provenance
- Source
- SCIOPS
- Collection Method
- Collected by the Southern California Seismographic Network (SCSN) via seismic instruments.
- Time Range
- 1932 through the present.
- Geography
- Southern California area.