AHO Reference Surfaces: 1m Bathymetry Grids for Gulf St Vincent, 2020

Two high-resolution bathymetric surfaces were created from a 2020 survey in Gulf St Vincent, South Australia, for calibrating multibeam echosounders. The Australian Hydrographic Office contracted the survey, which used Kongsberg EM 2040 and EA440 echosounders and was processed with Caris HIPS & SIPS. Separate 1-meter resolution GeoTIFF grids are provided for two sites in MSL, LAT, and Ellipsoid vertical datums.

Use Cases

• Calibrating multibeam echosounder systems based on the described reference surfaces.
• Analyzing seafloor topography in Gulf St Vincent based on the 1-meter resolution bathymetry grids.
• Comparing vertical datums (MSL, LAT, Ellipsoid) for a specific marine area based on the provided separate grids.

Strengths

• Data was collected using specific, professional-grade equipment (Kongsberg EM 2040 and EA440 echosounders).
• Provides high-resolution (1-meter) grids for two distinct survey sites.
• Includes data referenced to three different vertical datums (MSL, LAT, Ellipsoid).

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Hydrographic Office (AHO) via Geoscience Australia Data.

Collection Method

Acquired via contracted survey using Kongsberg multibeam and singlebeam echosounders, processed with Caris HIPS & SIPS.

Time Range

Survey acquired 4 Sep 2020 – 16 Sep 2020.

Freshness

Last updated 2026-04-30 13:27:53.018237; freshness should be verified.

Geography

Gulf St Vincent, South Australia.