CTD Sensor Measurements from Antarctic Midwater Trawl Surveys

CTD sensor data was collected during the BROKE-West voyage of the Aurora Australis in 2006. Measurements include conductivity, temperature, and pressure, logged every second when the Rectangular Midwater Trawl net was in the water. The data was processed and provided by the Australian Antarctic Data Centre.

Use Cases

• Analyze conductivity values to determine the precise in-water and out-of-water timing for each trawl deployment.
• Correlate CTD pressure readings with logged 'Net Open Time' to validate and adjust trawl event timestamps.
• Study temperature and conductivity profiles from the sensor to characterize water masses encountered during the Antarctic voyage.

Strengths

• Data logged at a 1-second frequency during net deployments, providing high temporal resolution.
• Includes calibration data for the CTD sensor used for the entire voyage, supporting data accuracy.

Limitations

• The dataset's total row count, column details, and geographic bounds are unspecified.
• The ITI data column for net-to-ship distance was non-functional for the voyage and was removed.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC)

Collection Method

Data acquired via a FSI CTD sensor attached to a Rectangular Midwater Trawl, logged by RMT software and processed with a custom Java application.

Time Range

2006 (BROKE-West voyage)

Freshness

null

Geography

Antarctic region (specific voyage track not detailed)