RV Investigator IN2021_E02: Multibeam Echosounder Bathymetry and Backscatter Data

32 raw data files totalling 12.2 GB and 30 watercolumn files totalling 39.7 GB were collected by the Australian Ocean Data Network on RV Investigator voyage IN2021_E02 between November 20 and 28, 2021. The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry, backscatter, and watercolumn backscatter data east of Tasmania and around Freycinet Marine Park. Processed data includes motion-corrected bathymetry grids in GeoTIFF format and line data in GSF and ASCII formats.

Use Cases

• Calibrate and test deep-sea research equipment based on the voyage's primary objectives described.
• Model seafloor bathymetry and morphology based on the processed bathymetry grids.
• Analyze seafloor composition and texture based on the backscatter information collected.
• Study watercolumn acoustic properties based on the watercolumn backscatter data files.

Strengths

• Data includes 12.2 GB of raw bathymetry/backscatter and 39.7 GB of watercolumn backscatter data.
• Processed data has been corrected for motion, position, and tides using RTK/GPS and the EGM2008 geoid model.
• The EM710 MKII echosounder provides high angular resolution (0.5° by 1°) and a nominal frequency range of 40-100 kHz.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collected using a Kongsberg EM710 MKII multibeam echosounder onboard RV Investigator.

Time Range

November 20 to November 28, 2021

Freshness

Last updated 2026-04-28 13:22:00.507049; freshness should be verified

Geography

East of Tasmania and around Freycinet Marine Park, Australia