RV Investigator Multibeam Echosounder Data from Southern East Australian Current Voyage

Multibeam echosounder data from RV Investigator voyage IN2018_V04, collected between 11 September and 8 October 2018. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data across a nominal frequency range of 40 to 100 kHz. The dataset comprises 23 raw files totalling 11.1 GB, with processed data available in multiple formats.

Use Cases

• Generate high-resolution seafloor maps based on processed bathymetry grids.
• Analyze seafloor composition and texture based on backscatter information.
• Study water column acoustic targets based on watercolumn backscatter data.
• Conduct geospatial analysis of marine features based on processed data in GeoTIFF format.

Strengths

• Data acquisition applied sound velocity profiles and corrected for motion and position.
• Processed data has had outliers removed and is available in multiple formats including GeoTIFF and ASCII.
• Dataset contains 23 files totalling 11.1 GB of raw data.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• The application of tide corrections to the processed data is ambiguously stated as '[were/were not] applied'.

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Collected via Kongsberg EM710 MKII multibeam echosounder aboard RV Investigator.

Time Range

11 September 2018 to 8 October 2018.

Freshness

Last updated 2026-04-18 20:05:57.103955; freshness should be verified.

Geography

Southern extension of the East Australian Current region, voyage departed and returned to Hobart.