RV Investigator Voyage IN2021_V01 (TEMPO) Sonobuoy Recordings

From 29 January to 24 March 2021, the RV Investigator research voyage IN2021_V01 collected acoustic data and Antarctic krill 3D coordinates off the Australian Antarctic Territory. The dataset contains approximately 460 hours of recordings from 251 deployed DIFAR sonobuoys, contributed by the Australian Ocean Data Network. Recordings are intended for predator observation studies, with acoustic detections of blue whales, sperm whales, and other marine mammals and seals.

Use Cases

• Detect and classify marine mammal vocalizations based on described acoustic recordings of blue whales, sperm whales, and other species.
• Model Antarctic krill distribution patterns based on the 3D coordinate data mentioned in the description.
• Analyze ocean noise profiles and marine soundscapes using the directional frequency analysis and recording (DIFAR) data.
• Complement visual predator surveys with acoustic presence data for species like fin whales, humpback whales, and leopard seals.

Strengths

• Approximately 460 hours of acoustic recordings provide a substantial temporal sample.
• Data from 251 deployed sonobuoys offers wide spatial coverage during the voyage.
• Includes complementary 3D coordinate data for Antarctic krill, supporting multi-modal analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and exact file sizes are unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias inherent to the single voyage and data_gov_au source.

Provenance

Source

Australian Ocean Data Network, Marine National Facility (MNF) RV Investigator.

Collection Method

Collected via deployed Directional Frequency Analysis and Recording (DIFAR) sonobuoys during research voyage IN2021_V01.

Time Range

29 January to 24 March 2021 (AEST).

Freshness

Last updated 2026-04-10 18:59:54.360898; freshness should be verified.

Geography

Voyage from Hobart (TAS) to Hobart, operating off the Australian Antarctic Territory.