AHO Reference Surfaces: Bathymetry Survey for Sonar Calibration in Hobart, 2021

A 2021 survey from October 10 to November 8 acquired bathymetric data for the Australian Hydrographic Office. The dataset provides separate 0.5m and 1m resolution grids for two sites, processed from Kongsberg EM2040D multibeam echosounder data. It was created by Geoscience Australia for calibrating multibeam echosounders under the Hydroscheme Industry Partnership Program.

Use Cases

• Calibrating multibeam echosounders based on high-resolution reference bathymetry surfaces.
• Analyzing seafloor morphology based on 0.5m and 1m resolution GeoTIFF grids.
• Comparing vertical datums (MSL, LAT, Ellipsoid) for hydrographic applications based on the provided separate grids.

Strengths

• Survey conducted with a specific Kongsberg EM2040D multibeam echosounder.
• Data processed using industry-standard QPS Qimera software.
• Provides grids in three vertical datums: MSL, LAT, and Ellipsoid.
• Offers high-resolution outputs at both 0.5m and 1m resolutions.

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.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Acquired via contracted national reference survey using Kongsberg EM2040D multibeam echosounder, processed with QPS Qimera.

Time Range

2021-10-10 to 2021-11-08

Freshness

Last updated 2026-04-30 14:29:17.931132; freshness should be verified.

Geography

Hobart, Tasmania, Australia