Hydrocarbon Seepage Features on Australia's Yampi Shelf

Active hydrocarbon seepage is imaged on the tropical carbonate Yampi Shelf in Northwest Australia. The data characterizes gas plumes, seabed features like reflective blocks and pockmarks, and their correlation with subsurface seismic features and tidal cycles.

Use Cases

• Analyze the correlation between gas plumes in the water column and specific seabed features like reflective block clusters and pockmark fields.
• Model seepage activity and intensity variations against pressure changes related to macro-tidal cycles.
• Investigate hydrocarbon migration pathways controlled by the reactivation of pre-existing fractures and dykes within the basement.
• Study the influence of coarse bioclastic sediments and high-energy currents on the preservation of seabed features on a carbonate shelf.

Strengths

• First documented imaging of active present-day hydrocarbon seepage on a tropical carbonate shelf in Australia.
• Data integrates multiple feature types: gas plumes, seabed morphology (blocks, pockmarks, mounds), and subsurface seismic attributes.
• Study area is specified as the Yampi Shelf in Northwest Australia, with water depths of 50 and 90 meters noted.

Limitations

• Dataset scope is confined to a single example region, the Yampi Shelf, limiting geographic generalizability.
• The raw description is from a scientific publication; underlying geophysical data sets (e.g., specific seismic lines) may not be directly accessible.
• Temporal coverage and data volume (rows, size) are unspecified.

Provenance

Source

Geoscience Australia Data

Collection Method

Imaging and characterization of seepage features using geophysical data sets, as described in a scientific journal paper.

Time Range

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Freshness

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Geography

Yampi Shelf, Northwest Australia (tropical carbonate shelf)