From Australian Oceans Data Network
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Nella Dan: ADBEX II Cruise - Hydroacoustic krill survey data

Created 23/06/2025

Updated 23/06/2025

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This dataset contains hydroacoustic results from the Antarctic Division Biomass Experiment II (ADBEX II) cruise of the Nella Dan. This cruise is the third in a series of six cruises, performing a long term survey of krill and other zooplankton distribution and abundance. Australia was to have participated in the Second International Biomass Experiment I (SIBEX I), but withdrew due to resupply problems. ADBEX II is a reduced sampling program of what was to have been sampled during SIBEX I. Three transects were made off Antarctica in the Mawson region of the Australian sector, in January to March 1984, covering a survey area of 70,000 square kilometers. Quantitative and geographic krill distribution, abundance, mean and variance of the krill weight density, and total krill biomass were obtained. Biomass estimates for ADBEX II are given as 3.5 million tonnes, obtained by extrapolating over the survey area used on the SIBEX II cruise (1.28x10^6 square kilometers). Temperature, nutrient and salinty data were also obtained, as well as trawl results. Summary results are listed in the documentation. The fields in this dataset are: pressure temperature salinity volume geopotential samples deviation

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Additional Info

Field Value
Title Nella Dan: ADBEX II Cruise - Hydroacoustic krill survey data
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/90508b81-627f-4afa-92c6-9530d9b76271
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 10/01/1984 - 07/03/1984
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        58.0,
        -70.0
      ],
      [
        70.0,
        -70.0
      ],
      [
        70.0,
        -60.0
      ],
      [
        58.0,
        -60.0
      ],
      [
        58.0,
        -70.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Nella Dan: ADBEX II Cruise - Hydroacoustic krill survey data". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/nella-dan-adbex-ii-cruise-hydroacoustic-krill-survey-data