Elizabeth and Middleton Reef Multibeam Sonar Backscatter Survey, 2020

Geoscience Australia collected multibeam sonar backscatter data for Middleton and Elizabeth Reefs in the Lord Howe Marine Park from January 31 to February 6, 2020. The survey provides baseline seabed information at 4-meter spatial resolution to support a 10-year marine park management plan. Data acquisition also included AUV imagery, sediment samples, and baited underwater video.

Use Cases

• Map seafloor composition and texture based on multibeam sonar backscatter data.
• Establish baseline habitat conditions for environmental monitoring within marine park zones.
• Model benthic community distributions by integrating sonar data with AUV imagery and sediment samples.

Strengths

• Data was collected by a national geological survey (Geoscience Australia) using a Kongsberg EM 2040C HD multibeam sonar.
• The 4-meter gridded resolution suggests a detailed representation of the seafloor.
• Data supports a specific 10-year management plan (2018-2028) for the Temperate East Marine Park Network.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and total spatial extent are unknown, which may limit suitability assessment.
• The dataset is explicitly not to be used for navigational purposes, limiting its application scope.

Provenance

Source

Geoscience Australia Data

Collection Method

Multibeam sonar survey from the vessel TV Bluefin, supplemented by AUV imagery, sediment grabs, and baited remote underwater videos.

Time Range

2020-01-31 to 2020-02-06

Freshness

Last updated 2026-04-30 13:53:00.389041; freshness should be verified.

Geography

Middleton Reef and Elizabeth Reef, Lord Howe Marine Park, Australia