CTD Camera Images from the 2021 TEMPO Voyage in the Southern Ocean

The Australian Ocean Data Network provides raw seafloor images collected during the RV Investigator voyage IN2021_V01 from 29 January to 24 March 2021. A deep-sea camera mounted to a CTD rosette captured images to investigate krill activity near the seabed in the East Antarctic sector of the Southern Ocean. The dataset includes the highest-quality image(s) from each full-depth CTD deployment.

Use Cases

• Identify krill presence and behavior in abyssal environments based on seafloor imagery.
• Analyze seafloor composition and features from images taken 3–5 meters above the seabed.
• Study the correlation between CTD cast locations and observed biological activity.
• Assess the impact of ship and cable motion on image consistency for time-series analysis.

Strengths

• Images were captured using a standardized Canon HFG10 camera system mounted to the CTD frame.
• Data collection followed a specific protocol, activating the camera 25 meters above the seafloor and adjusting focus from infinity to 1 meter.
• The voyage provides a defined temporal coverage from 29 January to 24 March 2021 in the East Antarctic Southern Ocean.

Limitations

• Row count and dataset size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The description notes natural ship and cable movement caused the camera to capture slightly different seabed sections, which may affect spatial consistency.

Provenance

Source

Australian Ocean Data Network

Collection Method

Images captured by a Canon HFG10 camera mounted to a CTD rosette frame during full-depth deployments.

Time Range

29 January 2021 to 24 March 2021

Freshness

Last updated 2026-06-16 20:41:05.591186; freshness should be verified.

Geography

East Antarctic sector of the Southern Ocean