RV Investigator Voyage IN2026_V01: Multibeam Echosounder Bathymetry and Watercolumn Data

Antarctic region multibeam echosounder data collected by the RV Investigator during the COOKIES voyage from January 02 to February 25, 2026. The dataset contains 1226 files totaling 122 GB of raw bathymetry data and 1226 files totaling 193 GB of watercolumn data, stored in .kmall and .kmwcd formats at CSIRO. Data were processed with sound velocity profiles, motion correction, and GPS tide computed using the EGM2008 model.

Use Cases

• Map seafloor bathymetry based on processed multibeam data corrected for motion and tides.
• Analyze watercolumn backscatter properties based on the .kmwcd format data.
• Study sediment distribution and ice ecosystems in the Antarctic region based on the voyage's scientific objectives.
• Validate acoustic models based on the EM124 echosounder's 12 kHz nominal frequency and 1x1 degree resolution.

Strengths

• 1226 files totaling 122 GB of raw bathymetry data provide substantial volume for analysis.
• Data processing includes applied sound velocity profiles, motion/position correction, and GPS tide computation using the EGM2008 model.
• Specific technical details are provided, including the echosounder's 12 kHz frequency and 1x1 degree angular resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Australian Ocean Data Network via data_gov_au

Collection Method

Collected via EM124 multibeam echosounder aboard RV Investigator.

Time Range

January 02, 2026 to February 25, 2026

Freshness

Last updated 2026-06-23 02:41:07.442912; freshness should be verified.

Geography

Antarctic region, voyage departed from and returned to Hobart.