Philippines Marine Seismic Survey: 2750 km of Geophysical Data from 1992

2750 km of 192-channel seismic data, plus geochemical sniffer, gravity, magnetic, and bathymetric data were collected during a joint survey by the Australian Bureau of Mineral Resources and the Philippine Office of Energy Affairs from March to May 1992. The survey covered four offshore sedimentary basins in the Philippines: NE Palawan Shelf, Cuyo Platform, Tayabas Bay, and Ragay Gulf. The data was acquired using the research vessel Rig Seismic and funded by the Australian International Development Assistance Bureau.

Use Cases

• Mapping subsurface geological structures based on 192-channel seismic reflection data.
• Identifying hydrocarbon seepage sources based on geochemical sniffer anomalies categorized as thermogenic or dry gas.
• Analyzing basin morphology and sediment thickness based on bathymetric and seismic data showing up to 4 seconds of stratified section.
• Correlating geochemical anomalies with known prospects and fault structures mentioned in the description.
• Estimating hydrocarbon flux rates based on vertical profile data and gas samples collected for isotope analysis.

Strengths

• 2750 km of multi-channel seismic data provides substantial spatial coverage.
• Multi-modal data collection includes seismic, geochemical sniffer, gravity, magnetic, and bathymetric measurements.
• Survey conditions were very calm, which the report states was conducive to collecting low-noise data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Seismic data acquisition was abandoned at night in some areas due to fishing activities, potentially creating gaps.

Provenance

Source

Australian Ocean Data Network

Collection Method

Data collected via marine survey using the geoscience research vessel Rig Seismic.

Time Range

March to May 1992

Freshness

Last updated 2026-05-05 04:46:29.120551; freshness should be verified.

Geography

Philippine offshore sedimentary basins: NE Palawan Shelf, Cuyo Platform, Tayabas Bay, Ragay Gulf