KOMBI: Southern Ocean Krill and Benthic Monitoring Data from 2021-2022

Three autonomous KOMBI seafloor landers collected data in the Southern Ocean between 2021 and 2022. The Australian Ocean Data Network provides this dataset, which includes active and passive acoustic data, CTD measurements, and video camera footage from instruments deployed at depths between 350 and 1500 meters. Data collection is part of an ongoing time series designed to capture seasonal to interannual variability.

Use Cases

• Model krill species distribution based on active acoustic (ADCP and echosounder) backscatter data.
• Analyze seasonal environmental changes using high-resolution time-series temperature, salinity, and pressure (CTD) data.
• Study benthic-pelagic coupling and non-krill species behavior using integrated video camera footage.
• Calibrate acoustic instruments using the provided raw calibration data and code from tank tests.

Strengths

• Data is collected from three separate mooring deployments, providing spatial replication.
• Instruments are calibrated in a controlled 10,000L tank, and raw calibration data and code are included.
• Platforms are designed to collect data across a full year, capturing seasonal variability.
• Mooring dimensions (1145 x 1145 x 1300 mm) and deployment depth range (350m to 1500m) are specified.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Calibration is only available for narrowband echosounder frequencies.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collected autonomously by KOMBI seafloor lander platforms integrating multiple sensors (CTD, cameras, current profilers, acoustic instruments).

Time Range

2021-2022

Freshness

Last updated 2026-07-10 00:27:05.895897; freshness should be verified.

Geography

Southern Ocean, continental shelf and shelf break