RV Investigator Multibeam Echosounder Data from East Tasmania, 2021

November 20-28, 2021 multibeam echosounder data collected by the RV Investigator to calibrate shipboard equipment. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data east of Tasmania and around Freycinet Marine Park. Data are provided by the Australian Ocean Data Network and include 32 raw bathymetry files (12.2 GB) and 30 watercolumn files (39.7 GB).

Use Cases

• Generate high-resolution seafloor maps based on processed bathymetry grids in GeoTIFF format.
• Analyze seafloor composition and texture based on backscatter information mentioned in the description.
• Study water column acoustic properties based on the watercolumn backscatter data.
• Calibrate and validate other marine survey equipment based on the detailed acquisition and processing report.

Strengths

• Data includes multiple processing levels: raw .all/.wcd files, processed line data (.gsf/ascii), and final bathymetry/backscatter grids (GeoTIFF).
• Specific corrections applied: motion, position, tide (using RTK/GPS and EGM2008 geoid), and sound velocity profiles.
• Raw data volume is substantial, with 12.2 GB of bathymetry data and 39.7 GB of watercolumn data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analytical methods.
• Freshness should be verified; the last metadata update was 2026-04-18 18:21:18.241457.

Provenance

Source

Australian Ocean Data Network via data_gov_au

Collection Method

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

Time Range

November 20, 2021 to November 28, 2021

Freshness

2026-04-18 18:21:18.241457

Geography

East of Tasmania and around Freycinet Marine Park, Australia