RV Investigator ADCP Current Data from 2024 Southeast Marine Ecosystem Voyage

Acoustic Doppler Current Profiler (ADCP) data collected during the RV Investigator voyage IN2024_V05 from November 13 to December 12, 2024. The voyage, titled 'Multi-year: Untangling the causes of change over 25 years in the southeast marine ecosystem,' departed and returned to Hobart. Data were collected using RDI Ocean Surveyor 150kHz, 75kHz, and 38kHz ADCPs in narrowband mode and processed with the CODAS system.

Use Cases

• Analyze current profiles from the 150kHz, 75kHz, and 38kHz ADCPs to study ocean circulation patterns in the southeast marine ecosystem.
• Investigate temporal gaps in ADCP data collection caused by interference with concurrent EK80 fisheries survey operations.
• Calibrate ADCP measurements using the hour of bottom tracking data collected with the OS150nb instrument.
• Process current velocity data accounting for the nominal transducer depth of 6 metres and the keel positioned 2 metres below the hull.

Strengths

• Data collected over a 30-day voyage from November 13 to December 12, 2024, providing a continuous time series.
• Processed and quality-controlled by CSIRO's National Collections and Marine Infrastructure Information and Data Centre.
• Includes measurements from three specific ADCP instruments: RDI Ocean Surveyor 150kHz, 75kHz, and 38kHz.

Limitations

• ADCP data collection was interrupted for long periods when EK80 surveys were active to avoid interference.
• Specific data volume, row count, and column structure are unknown from the provided description.
• Primary data files are in HTML and PNG formats, which may require specialized tools for numerical analysis of the underlying data.

Provenance

Source

CSIRO Marlin Data Catalogue

Collection Method

Collected using the University of Hawaii Data Acquisition System (UHDAS) and post-processed with the Common Ocean Data Access System (CODAS).

Time Range

November 13, 2024 to December 12, see 2024.

Freshness

Last updated March 25, 2026.

Geography

Southeast marine ecosystem, voyage departed from and returned to Hobart.