Elizabeth and Middleton Reef Bathymetry Grids at 5m Resolution

Geoscience Australia's GA4848 dataset contains bathymetry data for Elizabeth and Middleton Reefs within the Lord Howe Marine Park. The data includes two 5-meter resolution grids covering a combined area of 312 km², collected via multibeam sonar from January 31 to February 6, 2020. This survey was a collaborative project funded by the National Environmental Science Program Marine Biodiversity Hub to establish baseline information for benthic habitats.

Use Cases

• Modeling benthic habitat distribution based on high-resolution bathymetry data.
• Establishing environmental baselines for monitoring within the Temperate East Marine Park Network.
• Integrating seafloor topography with complementary seabed imagery and sediment sample data.

Strengths

• High spatial resolution of 5 meters for bathymetry grids.
• Covers a combined survey area of 312 square kilometers.
• Data collected using a Kongsberg EM 2040C HD multibeam sonar system.

Limitations

• 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

Collection Method

Seabed mapping via multibeam sonar, with complementary AUV imagery, sediment grabs, and BRUV footage.

Time Range

January 31 to February 6, 2020

Freshness

Last updated 2026-04-20 01:40:25.740099; freshness should be verified.

Geography

Elizabeth and Middleton Reefs, Lord Howe Marine Park, Australia