Crowdy Head Offshore Bathymetry and Backscatter Survey, 5m Resolution

Multibeam survey data acquired by the NSW government's Research Vessel Bombora between 20/APR/2021 and 30/APR/2021. The dataset contains 32-bit floating point geotiff files of bathymetry and backscatter in 5m resolution, processed through Hypack, R2Sonic GUI, POSView, POSPac, Qimera, and FMGT software. This work was funded by the SeabedNSW program and HabMap Program to provide a baseline dataset and map seabed types.

Use Cases

• Modeling underwater topography based on high-resolution bathymetry data.
• Classifying seabed habitats based on backscatter intensity data.
• Establishing environmental baselines for marine park management as part of the described SeabedNSW program.
• Analyzing coastal geomorphology and sediment transport patterns off Crowdy Head.

Strengths

• Data was acquired using a R2Sonic 2022 multibeam sonar system, suggesting modern instrumentation.
• Provides both bathymetry and backscatter layers at a consistent 5-meter spatial resolution.
• Standard operating procedures and a survey report are referenced, indicating documented methodology.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description explicitly states 'Not to be used for navigational purposes', limiting its application.

Provenance

Source

NSW Government Department of Planning and Environment (DPE), collected by Geoscience Australia.

Collection Method

Acquired via multibeam sonar survey from the Research Vessel Bombora.

Time Range

20/APR/2021 - 30/APR/2021

Freshness

Last updated 2026-04-30 14:08:57.176712; freshness should be verified.

Geography

Crowdy Head Offshore, New South Wales, Australia