RV Investigator Antarctic Krill Voyage Multibeam Echosounder Data, 2021

47 raw data files totalling 15.82GB of multibeam echosounder data were collected aboard the RV Investigator during a 2021 Antarctic krill survey. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data, primarily for mooring site assessments near the Antarctic shelf-break. Processed data includes bathymetry grids corrected to Mean Sea Level using the EGM2008 model, available in GeoTIFF and ASCII formats.

Use Cases

• Mapping seafloor bathymetry for nautical charting based on processed GeoTIFF grids.
• Analyzing seafloor composition and texture based on backscatter information.
• Assessing water column backscatter for krill or other biological target detection.
• Evaluating seabed suitability for scientific mooring deployments based on site survey data.

Strengths

• Data volume is precisely quantified at 15.82GB across 47 files.
• Bathymetry data is corrected for motion, position, and reduced to Mean Sea Level using the EGM2008 model.
• Processed data is available in multiple standard formats including GeoTIFF and ASCII.

Limitations

• Data collection was limited to short durations at the voyage's start and for specific mooring sites.
• Tide corrections were not applied to the processed data.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collected using a Kongsberg EM710 MKII multibeam echosounder aboard the RV Investigator.

Time Range

Voyage departed 29 January 2021 and returned 24 March 2021.

Freshness

Last updated 2026-06-16 20:48:51.270423; freshness should be verified.

Geography

Antarctic shelf-break region near coordinates 66°57.2'S, 75°00.5'E & 66°32'S, 62°13'E.