Perth Canyon Marine Park Seafloor Depth Model At 40-Meter Resolution

A 40-meter resolution bathymetric grid models the seafloor depth within Australia's Perth Canyon Marine Park. Geoscience Australia compiled the data from its holdings of sonar surveys, processing it into a geotiff format combined with a hillshade image for visualization. This release supports the management plans for Australia's national network of 58 marine parks, which cover 40 percent of the country's exclusive economic zone.

Use Cases

• Classify seafloor slope into Morphological Surface categories (Plain, Slope, Escarpment) using the bathymetric grid's elevation data.
• Generate derived products like hillshade visualizations by combining the bathymetric grid with slope and aspect calculations.
• Analyze the relationship between bathymetry and ecological parameters within the marine park boundary using the georeferenced grid.
• Support the development of 'Eco-narrative' documents by providing interpreted seafloor geomorphology from the bathymetric data.

Strengths

• Covers the entire Perth Canyon Marine Park within Australia's exclusive economic zone.
• Optimized grid resolution derived from vessel sonar system specifications.
• Integrated with a hillshade image for enhanced geomorphological interpretation.

Limitations

• Exact row/column count and total file size are unknown.
• Not suitable for navigational purposes, limiting operational use.
• Temporal range of the source sonar surveys is unspecified.

Provenance

Source

Geoscience Australia, compiled from the agency's bathymetry data holdings.

Collection Method

Processed and gridded sonar data from marine surveys at an optimal resolution.

Freshness

Dataset metadata was last updated in April 2026.

Geography

Perth Canyon Marine Park, within Australian Commonwealth waters.