Southern Ocean Current Profiler Data from RV Investigator Voyage

RV Investigator voyage IN2024_V02 collected Acoustic Doppler Current Profiler (ADCP) data for the Southern Ocean Time Series (SOTS) project southwest of Tasmania. The data were collected and processed by CSIRO's National Collections and Marine Infrastructure Information and Data Centre. The voyage occurred from March 31 to April 19, 2024.

Use Cases

• Analyze current velocity and direction profiles from OS150, OS75, and WH75 ADCP instruments.
• Study temporal patterns of ocean currents during the SOTS mooring deployment voyage.
• Assess data quality by investigating signal interference events and instrument checksum errors.
• Model water column dynamics using data from transducers located at specific depths (6m and 8m below water line).

Strengths

• Data collected during a dedicated 20-day research voyage for climate and carbon cycle studies.
• Post-processed using the Common Ocean Data Access System (CODAS), a standard tool for oceanographic data.
• Includes metadata on instrument modes (narrowband, broadband) and deployment specifics like transducer depth.

Limitations

• Data gaps exist where ADCPs were switched off during EK80 surveying and due to WH75 instrument failures.
• Unknown total row count, column count, and sample size for the dataset.
• Specific data quality metrics and the extent of checksum error impacts are not quantified.

Provenance

Source

CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).

Collection Method

Collected via shipboard Acoustic Doppler Current Profilers (ADCPs) using the University of Hawaii Data Acquisition System (UHDAS).

Time Range

March 31, 2024 to April 19, 2024.

Freshness

Data from April 2024, archived and last updated in April 2026.

Geography

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