Seabed Character and Geomorphology Mapping in the Great Australian Bight

A 2000/2001 regional seafloor mapping study by Geoscience Australia's South and Southwest Regional Project. It delineates four major geomorphological features and defines five acoustic echo facies for the Great Australian Bight area, captured in a GIS. The work aimed to support future Regional Marine Planning by providing foundational information for biological, environmental, and economic assessments.

Use Cases

• Modeling sedimentary processes in deep water based on the distribution of acoustic facies.
• Planning marine protected areas based on mapped geomorphological features like terraces, slopes, and canyons.
• Assessing geological inheritance on seabed character using the interpreted acoustic facies and their groundtruthing against samples.
• Supporting environmental impact studies with GIS data on the location of sedimentary basins, plateaus, and canyons.

Strengths

• Defines five distinct acoustic echo facies based on interpretation of 3.5kHz echo-sounding records and high-resolution seismic profiles.
• Delineates four major geomorphological features (continental shelf, marine terraces, slope, rise) with boundaries captured in a GIS.
• Includes groundtruthing of acoustic facies interpretations against seafloor samples.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data collection occurred in 2000/2001; freshness should be verified for contemporary applications.

Provenance

Source

Geoscience Australia Data

Collection Method

Regional seafloor mapping study involving interpretation of 3.5kHz echo-sounding records, high-resolution seismic profiles, and groundtruthing with seafloor samples.

Time Range

2000/2001

Freshness

Last updated 2026-04-20 02:53:10.762846; freshness should be verified

Geography

Great Australian Bight, South and Southwest region of Australia, including the continental shelf, slope, rise, and the South Australian abyssal plain.