Hobart Bathymetry Survey for Echosounder Calibration, 2021

Bathymetry data from a contracted national reference survey in Hobart, Tasmania, acquired for the Australian Hydrographic Office between 10 October and 8 November 2021. The surface was created for calibrating multibeam echosounders and is provided as separate 0.5m and 1m resolution grids in MSL, LAT, and Ellipsoid vertical datums. The dataset was processed using QPS Qimera and exported as 32-bit floating point GeoTIFF grids.

Use Cases

• Calibrating multibeam echosounders based on the high-resolution reference surfaces mentioned in the description.
• Analyzing seafloor topography in Hobart, Tasmania, based on the bathymetric survey data.
• Comparing vertical datums (MSL, LAT, Ellipsoid) using the separate grids provided for each site.
• Processing raw sonar data using workflows compatible with QPS Qimera software, as referenced in the processing method.

Strengths

• Data was acquired using a specific, high-resolution sensor (Kongsberg EM2040D).
• Provides grids at two distinct resolutions (0.5m and 1m) for detailed analysis.
• Includes data referenced to three vertical datums (MSL, LAT, Ellipsoid) for flexibility.

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.
• The dataset is explicitly not to be used for navigational purposes, limiting its application scope.

Provenance

Source

Australian Ocean Data Network

Collection Method

Acquired via a contracted survey using Kongsberg EM2040D multibeam echosounder and processed with QPS Qimera.

Time Range

10 October 2021 to 8 November 2021

Freshness

Last updated 2026-04-16 10:17:57.069718; freshness should be verified.

Geography

Hobart, Tasmania, Australia