RV Investigator IN2024_V02: Acoustic Doppler Current Profiler Data

CSIRO National Collections and Marine Infrastructure archives Acoustic Doppler Current Profiler (ADCP) data from the RV Investigator voyage IN2024_V02, part of the Southern Ocean Time Series (SOTS). The data were collected southwest of Tasmania between March 31 and April 19, 2024, using RDI Ocean Surveyor and WH75 instruments, processed via the UHDAS and CODAS systems. Specific operational notes detail instrument modes, keel depths, and a logging issue with the WH75.

Use Cases

• Analyzing ocean current profiles based on ADCP acoustic measurements.
• Studying water column dynamics for climate and carbon cycle research in the Southern Ocean.
• Calibrating or validating hydrodynamic models using quality-controlled current velocity data.
• Investigating instrument performance and data gaps related to the documented WH75 checksum errors.

Strengths

• Data is quality-controlled and archived by CSIRO's National Collections and Marine Infrastructure Information and Data Centre.
• Includes detailed operational metadata, such as instrument modes (narrowband/broadband), keel depths (~6m and ~8m), and specific date ranges.
• Post-processed using the standardized Common Ocean Data Access System (CODAS), suggesting a consistent analysis framework.

Limitations

• Critical metadata fields (columns, row count, size, license, author) are explicitly listed as 'unknown' or 'None' across all sources.
• A known data gap exists due to the WH75 instrument stopping logging on April 14, 2024, because of suspected water ingress.
• ADCPs were switched off during specific survey operations (EK80 surveying), creating intentional gaps in the time series.

Provenance

Source

CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC), via the Australian Ocean Data Network.

Collection Method

Collected using the University of Hawaii Data Acquisition System (UHDAS) on the RV Investigator and post-processed with CODAS.

Time Range

March 31, 2024 to April 19, 2024 (AEST)

Freshness

2026-04-16 10:13:54.095957

Geography

Southern Ocean, southwest of Tasmania, including the Patience Seamount and SOTS mooring sites.