IN2018_V04: Southern Ocean Bathymetry and Backscatter Data from RV Investigator

Multibeam echosounder data collected during the RV Investigator voyage IN2018_V04, which sailed from Hobart on 11 September 2018 and returned on 8 October 2018. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data, stored in 23 raw files totaling 11.1 GB. Processed data grids are available in GeoTIFF format, with additional products potentially available on request from the Australian Ocean Data Network.

Use Cases

• Modeling seafloor topography based on processed bathymetry grids.
• Analyzing seafloor composition and texture based on backscatter information.
• Investigating water column acoustic targets based on watercolumn backscatter data.
• Constraining iron cycling studies in ocean currents using the geospatial context of the data collection.

Strengths

• Data includes 23 raw files totaling 11.1 GB, providing substantial raw material.
• Bathymetry data is corrected for motion and position, and processed data has had outliers removed.
• Data acquisition applied sound velocity profiles, and the EM710 MKII system provides a nominal frequency range of 40 to 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 from the description ('[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 2026-04-21 14:35:59.364672; freshness should be verified.

Geography

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