RV Investigator EM710 MKII Multibeam Echosounder Data from Tasmania, 2021

RV Investigator voyage IN2021_E02 collected 12.2 GB of raw multibeam echosounder data and 39.7 GB of watercolumn data around eastern Tasmania and Freycinet Marine Park in November 2021. The Kongsberg EM710 MKII system acquired seafloor bathymetry, backscatter, and watercolumn backscatter data at frequencies from 40 to 100 kHz. Data were processed with motion, position, and tide corrections and are stored in .all, .wcd, .gsf, ascii, and geotiff formats by the Australian Ocean Data Network.

Use Cases

• Calibrate multibeam echosounder systems based on the described equipment testing and sea trials.
• Map seafloor bathymetry and backscatter intensity based on the processed geotiff grids.
• Analyze watercolumn backscatter features based on the .wcd format data.
• Study coastal and marine park geomorphology based on the data coverage around eastern Tasmania and Freycinet Marine Park.
• Validate acoustic data processing pipelines based on the described corrections for motion, position, and tide.

Strengths

• Data volume is substantial, with 32 files totalling 12.2 GB of raw bathymetry/backscatter data and 30 files totalling 39.7 GB of watercolumn data.
• Processing is documented, including corrections for motion, position, and tide using RTK/GPS and the EGM2008 geoid model.
• Data acquisition details are specific, including the echosounder model (Kongsberg EM710 MKII) and its nominal frequency range (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.
• Last updated 2026-06-27 18:19:54.521154; freshness should be verified.

Provenance

Source

Australian Ocean Data Network

Collection Method

Acquired via the Kongsberg EM710 MKII multibeam echosounder onboard RV Investigator.

Time Range

November 20 to November 28, 2021

Freshness

2026-06-27 18:19:54.521154

Geography

Waters east of Tasmania and around Freycinet Marine Park, Australia.