RV Investigator Voyage IN2018_V04: Seafloor Bathymetry and Backscatter Data

23 files totaling 11.1 GB of multibeam echosounder data were collected on RV Investigator voyage IN2018_V04 from September 11 to October 8, 2018. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data in the southern extension of the East Australian Current. Data are stored by CSIRO in raw, processed, and gridded formats.

Use Cases

• Mapping seafloor bathymetry based on processed grids in GeoTIFF format.
• Analyzing acoustic backscatter intensity for seabed classification.
• Studying watercolumn backscatter patterns for marine life distribution.
• Applying sound velocity and motion corrections for precise geospatial analysis.

Strengths

• Data volume is 11.1 GB across 23 files, indicating substantial coverage.
• Data includes multiple processing streams: raw (.all/.wcd), processed (.gsf/ascii), and gridded (GeoTIFF).
• Acquisition details are specific, including instrument model (EM710 MKII) and frequency range (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.
• Tide correction status is ambiguous ('[were/were not] applied').

Provenance

Source

Australian Ocean Data Network

Collection Method

Acquired via Kongsberg EM710 MKII multibeam echosounder on RV Investigator voyage IN2018_V04.

Time Range

September 11, 2018 to October 8, 2018

Freshness

Last updated 2026-04-16 13:58:41.428347; freshness should be verified.

Geography

Southern extension of the East Australian Current, departing and returning to Hobart.