Australian Ocean Bottom Seismograph Fleet Data for Crustal Imaging

Australian waters host a fleet of ocean bottom seismographs (OBSs) capable of recording passive-source seismic data like earthquakes and ambient noise, as well as active-source data from airgun arrays. The instruments, available at only five or six institutions globally, provide three-component recordings enabling analysis of both P-waves and S-waves. The Australian Ocean Data Network presented this abstract at the 2017 Australian Petroleum Production & Exploration Association Conference.

Use Cases

• Analyze three-component seismic time-series data to separate P-wave and S-wave phases for crustal velocity modeling.
• Use passive-source recordings of earthquakes and ambient noise to image subsurface structures on a regional scale.
• Correlate active-source airgun array signals with whale call recordings from the same OBS to monitor seismic survey noise.
• Process reflected and refracted seismic phases from commercial survey data to derive velocity distributions of the crust and upper mantle.
• Leverage the broadband frequency range of the OBS recordings for multi-purpose seismic analysis, including environmental monitoring.

Strengths

• Instruments with broadband frequency range are available at only five or six institutions globally, indicating specialized capability.
• Multi-purpose devices record both passive-source (earthquakes, noise) and active-source (airgun) data simultaneously.

Limitations

• Specific row count, column names, and data volume are unknown.
• The dataset description is an abstract from 2017, indicating potential temporal staleness of the metadata.
• Data accessibility and file formats are unclear, with only an HTML reference provided.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Data collected by a fleet of ocean bottom seismographs (OBSs) during commercial seismic surveys.

Time Range

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Freshness

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Geography

Australian waters.