RV Investigator Voyage IN2026_V01: Multibeam Echosounder Bathymetry and Watercolumn Data

Multibeam echosounder data collected by the RV Investigator on the COOKIES voyage from Hobart between January 02 and February 25, 2026. The dataset includes 11.7 GB of raw bathymetry and backscatter data and 58.1 GB of watercolumn backscatter data, processed with motion correction and GPS tide models. It is hosted by the CSIRO Marlin Data Catalogue.

Use Cases

• Map seafloor bathymetry based on processed multibeam echosounder data.
• Analyze acoustic backscatter intensity for seabed classification.
• Study water column acoustic features using the dedicated watercolumn data files.
• Model oceanographic processes in the Southern Ocean region surveyed during the voyage.

Strengths

• Data is corrected for motion, position, and GPS tide using the EGM2008 model.
• Outliers have been removed from the processed data streams.
• Includes a substantial volume of raw (11.7 GB) and watercolumn (58.1 GB) data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Last updated 2026-06-13 05:48:59.036444; freshness should be verified.

Provenance

Source

CSIRO Marlin Data Catalogue

Collection Method

Collected via an EM2040MK2 multibeam echosounder operating at 400 kHz nominal frequency in dual swath mode aboard the RV Investigator.

Time Range

January 02, 2026 to February 25, 2026

Freshness

Last updated 2026-06-13.

Geography

Southern Ocean region, voyage departed from and returned to Hobart, Tasmania.