Metadata details
AAS_4512_KOMBI_2021_Echo
All scientific data collected by the Australian Antarctic program (AAp) are eventually described in the Catalogue of Australian Antarctic and Subantarctic Metadata (CAASM). CAASM can be used to search through AAp data descriptions, and it also provides links to access publicly available datasets, which can either be immediately downloaded or obtained from the Australian Antarctic Data Centre (AADC).
- Citation
- Cox, M., Smith, A., King, R. and Kawaguchi, S. (2026) Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor mooring datasets, Ver. 1, Australian Antarctic Data Centre - doi:10.26179/4sw2-dk40, Accessed: 2026-06-20
- Title
- Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor mooring datasets
- Data Centre
- Australian Antarctic Data Centre, Australia
- DOI
- doi:10.26179/4sw2-dk40
- Created Date
- 2024-02-29
- Revision Date
- 2025-01-15
- Parent record
- None
- Child record
- AAS_4512_KOMBI003_2021_hydrophone
Datasets and documents
Related links
Description
This dataset contains all data collected from Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor lander platforms and Mooring for Epipelagic Echo-sounding of Krill (MEEK) platforms.
KOMBI platforms were left on the seafloor for one year at depths on the continental shelf and near the shelf break. MEEK moorings are tethered by a mooring string in deeper water, with the top float at approximately 400m depth. The minimum depth of a mooring is 350m to avoid collision with icebergs and the maximum depth is 1500m. KOMBI dimensions are 1145 x 1145 x 1300 mm. Moorings are typically deployed in summer months from vessels and are left to collect data for one year (at least).
Active acoustic (ADCP and echosounder) data, passive acoustic data, CTD data and video camera footage are available from various instruments installed on the moorings. Active acoustic deployment files, compass calibrations and echosounder calibration files are included. Echosounders were calibrated in a 10,000L tank of temperature-controlled seawater at the Australian Antarctic Division in Kingston, using a 23mm tungsten carbide sphere and a paired Simrad EK80 333kHz echosounder to map the beam. Calibration raw data and code is included to produce Nortek SONAR equation CalibrationOffsetSv for each frequency. Calibration is only available for narrowband frequencies.
Data collection began in 2021 and is ongoing.
Purpose
For seasonal investigations into the behaviour of krill and relationships with their ecosystems.
Quality
The datasets included are raw and unprocessed. Active acoustic data requires calibration offsets to be applied (see Nortek Echosounder Calibration files).
Access
These data are not yet publicly available for download.
Temporal Coverages
- Start date: 2021-02-21 - Stop date:
Spatial Coverages
Data Resolution
- 0.375 Metre(s)
- 365 Day(s)
Science Keywords
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS
- EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > AMBIENT NOISE > BIOLOGICAL AMBIENT NOISE
Additional Keywords
- KOMBI
- MEEK
Locations
- OCEAN > SOUTHERN OCEAN
- GEOGRAPHIC REGION > POLAR
Platforms
- MOORINGS
Instruments
- Conductivity, Temperature, Depth
- ACOUSTIC SOUNDERS
- VIDEO CAMERA
- Passive Acoustic Recorder
Researchers
- cox, martin (INVESTIGATOR,TECHNICAL CONTACT)
- smith, abigail (INVESTIGATOR,TECHNICAL CONTACT,DIF AUTHOR)
- king, rob (INVESTIGATOR,TECHNICAL CONTACT)
- kawaguchi, so (INVESTIGATOR)
Use Constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4512_KOMBI_2021_Echo when using these data.
