Southern Ocean ADCP Current Profiles from RV Investigator Voyage IN2024_V02

Acoustic Doppler Current Profiler (ADCP) data collected during the RV Investigator voyage IN2024_V02 from March 31 to April 19, 2024. The dataset documents ocean current profiles for climate and carbon cycle studies southwest of Tasmania, processed using the Common Ocean Data Access System (CODAS). Data collection involved RDI Ocean Surveyor and WH75 instruments operating in narrowband and broadband modes.

Use Cases

• Analyze ocean current velocity and direction profiles from ADCP instruments for Southern Ocean circulation studies
• Investigate signal interference patterns during EK80 surveying operations at Patience Seamount and mooring sites
• Study instrument performance and error logs, such as WH75 checksum errors suspected from water ingress
• Compare data collected from port and starboard drop keels located at different depths below the water line

Strengths

• Data collected during a dedicated 20-day research voyage for the Southern Ocean Time Series (SOTS)
• Processed and quality-controlled by CSIRO National Collections and Marine Infrastructure
• Instruments deployed at known depths, with port keel transducer approximately 8.0m below the water line

Limitations

• Specific data volume, row count, and column structure are unknown from the provided description
• Data gaps exist from periods when ADCPs were switched off to reduce signal interference
• Known instrument issues, including WH75 checksum errors and suspected water ingress, may affect data continuity

Provenance

Source

CSIRO Marlin Data Catalogue, archived by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).

Collection Method

Collected using University of Hawaii Data Acquisition System (UHDAS) with RDI Ocean Surveyor OS150, OS75, and WH75 ADCP instruments, post-processed using CODAS.

Time Range

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

Freshness

Data from a voyage in April 2024, with record last updated in March 2026.

Geography

Southern Ocean southwest of Tasmania, voyage departed from and returned to Hobart.