RV Investigator Voyage IN2018_V04 Multibeam Echosounder Bathymetry and Backscatter Data

23 raw data files totalling 11.1 GB of multibeam echosounder data were collected aboard the RV Investigator during voyage IN2018_V04 from September 11 to October 8, 2018. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data across a nominal frequency range of 40 to 100 kHz. Processed data products, including corrected grids and line data, are managed by the Australian Ocean Data Network.

Use Cases

• Map seafloor bathymetry based on processed bathymetry grids.
• Analyze seafloor composition based on backscatter information.
• Study water column acoustic targets based on watercolumn backscatter data.
• Conduct marine habitat modeling based on high-resolution bathymetric and backscatter data.

Strengths

• Data volume is explicitly quantified at 11.1 GB across 23 files.
• Description specifies the instrument model (Kongsberg EM710 MKII) and its nominal frequency range (40-100 kHz).
• Multiple processed data formats are available (*.gsf, ascii, geotiff), suggesting different levels of accessibility.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The description notes that tide corrections '[were/were not]' applied, indicating uncertainty in this processing step.
• Row count is unknown, which may limit suitability assessment for large-scale statistical analysis.

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Collected via Kongsberg EM710 MKII multibeam echosounder aboard RV Investigator.

Time Range

September 11, 2018 to October 8, 2018.

Freshness

Last updated 2026-06-17 02:22:04.963661; freshness should be verified.

Geography

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