3D Trajectories and Positioning of Antarctic Krill from 2021 TEMPO Survey

305 krill have their head and tail coordinates recorded in the TEMPO_Orientation data. The dataset contains 3D positioning data from video frames of individual Antarctic krill, collected during the RV Investigator voyage IN2021_V01 from January to March 2021. It was gathered using an array of 10 GoPro cameras to support krill biomass estimates for fishery management.

Use Cases

• Analyze individual krill movement and orientation using head and tail 3D coordinates from the TEMPO_Orientation data.
• Reconstruct 3D swarm trajectories from video frame coordinates in the TEMPO_Tracks data to study collective behavior.
• Correlate camera details and horizontal distances with observed krill positioning to calibrate biomass estimation models.
• Validate krill behavior models by replicating methods from Burns et al. (2023) using the individual-level coordinate data.

Strengths

• Data includes 3D coordinates for 305 individual krill, providing a concrete sample size for analysis.
• Collection used an array of 10 GoPro Hero-8 cameras, offering multiple observational perspectives.
• Data supports a primary goal of updating catch limits in the CCAMLR Division 58.4.2-East fishery management area.
• Observations were made in natural conditions during a dedicated 2-month research voyage.

Limitations

• The total number of coordinate rows in the TEMPO_Tracks component is unknown, limiting assessment of temporal coverage density.
• Data is derived from video, which may have inherent limitations in resolution, lighting, and occlusion for accurate 3D reconstruction.
• The dataset's geographic scope is specific to the 2021 TEMPO survey route, limiting generalizability to other regions or times.

Provenance

Source

Australian Ocean Data Network, collected during the Marine National Facility RV Investigator voyage IN2021_V01.

Collection Method

Data obtained using an array of 10 GoPro Hero-8 cameras deployed into krill swarms; includes camera details, frame references, and converted 3D coordinates.

Time Range

29 January to 24 March 2021 (AEST).

Freshness

Data was last updated in March 2026, indicating recent maintenance.

Geography

Survey off the Australian Antarctic Territory, specifically for CCAMLR's Division 58.4.2-East.