Hydrocarbon Seepage Features on the Yampi Shelf, Northwest Australia

Active present-day hydrocarbon seepage imaged on the tropical carbonate Yampi Shelf, in 50 and 90 m water depth. The dataset from Geoscience Australia correlates seabed features like gas plumes and pockmarks with sub-surface geophysical data. Seepage activity appears to vary with macro-tidal cycles and is influenced by the coarse bioclastic sediments and high-energy currents of the region.

Use Cases

• Mapping gas plume distribution and seabed feature associations based on water column and seabed imaging.
• Analyzing the relationship between seepage intensity and tidal pressure cycles mentioned in the description.
• Modeling hydrocarbon migration pathways based on the control of pre-existing fractures and dykes.
• Studying the preservation of seepage features in high-energy, tropical carbonate shelf settings.

Strengths

• First documented imaging of active hydrocarbon seepage on an Australian tropical carbonate shelf.
• Correlates multiple data types: water column plumes, specific seabed features, and sub-surface geophysical anomalies.
• Describes seepage activity in two specific water depths: 50 and 90 meters.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified; last metadata update is 2026-04-30.

Provenance

Source

Geoscience Australia Data

Collection Method

Geophysical survey and imaging, likely involving sonar and seismic methods.

Freshness

Last updated 2026-04-30 14:48:53.240366

Geography

Yampi Shelf, Northwest Australia