IN2023_V07: Oceanographic Data from Antarctic Circumpolar Current Voyage

Between November 15 and December 20, 2023, the RV Investigator collected oceanographic data south of Tasmania during voyage IN2023_V07. The data, gathered via a towed Triaxus platform over 121.75 hours of towing, includes CTD, dissolved oxygen, transmissometer, PAR, ECO Triplet, nitrate, fluorescence, and LOPC measurements. The voyage aimed to characterize small-scale motions in a meander of the Antarctic Circumpolar Current to validate satellite observations from the SWOT mission.

Use Cases

• Validate Surface Water Ocean Topography (SWOT) satellite sea surface height measurements based on in-situ subsurface data.
• Characterize small-scale variability in ocean circulation and dynamics based on high-resolution CTD and sensor profiles.
• Quantify cross-frontal transport of heat and carbon based on multidisciplinary physical and biogeochemical measurements.
• Investigate linkages between physical, biogeochemical, and biological processes based on concurrent sensor data like fluorescence and LOPC.

Strengths

• Data collection spanned 121.75 hours of towing time across 5 distinct deployments.
• Measurements include a multidisciplinary suite of sensors (CTD, dissolved oxygen, nitrate, fluorescence, LOPC) for concurrent analysis.
• The voyage was specifically designed to capture small-scale motions (10-100 km) in a dynamic region of the Antarctic Circumpolar Current.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description notes software crashes and operational issues during some tows, which may affect data continuity.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collected via a towed Triaxus platform (hull #2) equipped with multiple oceanographic sensors during RV Investigator voyage IN2023_V07.

Time Range

November 15, 2023 to December 20, 2023

Freshness

Last updated 2026-06-16 18:56:01.947675; freshness should be verified.

Geography

Southern Ocean, south of Tasmania, traversing a standing meander of the Antarctic Circumpolar Current.