IN2023_V07: Acoustic Doppler Current Profiler Data from Antarctic Voyage

Southern Ocean waters south of Tasmania were surveyed for current data between November 15 and December 20, 2023. The dataset contains Acoustic Doppler Current Profiler (ADCP) measurements from the RV Investigator voyage IN2023_V07, processed by CSIRO National Collections and Marine Infrastructure. Data were collected using RDI Ocean Surveyor instruments at 75kHz and 150kHz frequencies.

Use Cases

• Modeling ocean current velocity and direction based on ADCP measurements.
• Analyzing smaller-scale ocean dynamics in a meander of the Antarctic Circumpolar Current.
• Validating satellite-derived ocean current data, such as from the SWOT mission, with in-situ measurements.
• Studying temporal variability of currents over a five-week voyage period.

Strengths

• Data were collected over a continuous 35-day voyage, providing a sustained temporal record.
• Instruments were deployed on extended drop keels, placing transducers approximately 7.2m below the water line to reduce surface interference.
• Data were post-processed using the Common Ocean Data Access System (CODAS), indicating a standardized quality control workflow.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and data volume are unknown, which may limit suitability assessment.
• One primary instrument (OS75) was not operational; data rely on a replacement (WH75) and the OS150.

Provenance

Source

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

Collection Method

Collected using ship-mounted Acoustic Doppler Current Profilers (ADCP) and processed with the University of Hawaii Data Acquisition System (UHDAS) and CODAS.

Time Range

November 15, 2023 to December 20, 2023 (AEST).

Freshness

Last updated 2026-04-16 16:37:50.948835; freshness should be verified.

Geography

Southern Ocean, south of Tasmania, along the track of RV Investigator voyage IN2023_V07.