AusBathyTopo: Bathymetry and Topography Model of the Torres Strait at 30m Resolution

A 30-meter resolution Digital Elevation Model (DEM) of the Torres Strait region, compiled from multiple bathymetric data sources. The dataset was created by Geoscience Australia and last updated on 2026-03-25. It integrates data from multibeam surveys, airborne LiDAR, satellite-derived bathymetry, and the National Intertidal Digital Elevation Model (NIDEM).

Use Cases

• Marine habitat mapping based on the 30 m-resolution depth and elevation grid.
• Simulating water mixing for hydrodynamic models at a whole-of-Great Barrier Reef scale.
• Analyzing the complex continental slope canyons and delta deposits described in the source surveys.
• Supporting environmental management and safe navigation planning for the Torres Strait reef system.

Strengths

• Integrates data from multiple high-resolution sources, including multibeam surveys and airborne LiDAR.
• Provides a consistent 30-meter grid resolution across the entire Torres Strait region.
• Source data were extensively edited as point clouds to remove noise and given consistent datums.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is explicitly not to be used for navigational purposes.
• Row count and specific file size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Compiled and edited from multibeam surveys, airborne LiDAR bathymetry, satellite-derived bathymetry, and the NIDEM model.

Freshness

Last updated 2026-03-25 18:17:46.963704; freshness should be verified.

Geography

Torres Strait, bounded by Australia, Indonesia, and Papua New Guinea, at the northern end of the Great Barrier Reef.