Metadata details

AAS_4102_KrillAcoustics_2015

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
O'Driscoll, R., Ladroit , Y., Cox, M. and Double, M. (2020) Echosounder data to assess patterns in krill density - voyage of the RV Tangaroa, 2015, Ver. 1, Australian Antarctic Data Centre - doi:10.26179/5def2698c7f02, Accessed: 2026-05-02
Title
Echosounder data to assess patterns in krill density - voyage of the RV Tangaroa, 2015
Data Centre
Australian Antarctic Data Centre, Australia
DOI
doi:10.26179/5def2698c7f02
Created Date
2019-12-10
Revision Date
2025-11-27
Expected Date of Data Release
2020-11-12
Data Version
1
Parent record
AAS_4102_2015_New_Zealand_Australia_Antarctic_Ecosystems_Voyage

Datasets and documents

    Related links

    Description

    Echosounder data were collected on a multidisciplinary research voyage conducted from the RV Tangaroa, operated by New Zealand’s National Institute of Water and Atmospheric Research Limited (NIWA). The voyage lasted 42 days, departing from Wellington, New Zealand on January 29th , 2015 and returning to the same port on 11th March 2015.
    Active acoustic data were obtained continuously using a calibrated scientific echosounder (Simrad EK60, Horten, Norway). The echosounder operated at 38 and 120 kHz for the duration of the voyage with a pulse duration of 1.024 ms, a pulse repetition rate of one ping per second and a 7° beam width. The echosounder data here are a subset of that collected throughout the voyage and include only data from south of 65°S. This subset of data focuses on research questions pertaining to Antarctic blue whales and krill.

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    Purpose

    Echosounder data were collected to investigate krill in the vicinity of, and demonstrably far from vocalising Antarctic blue whales. See Miller et al. 2019 (Sci. Rep. 9:16487; https://doi.org/10.1038/s41598-019-52792-4) for a more detailed description of these research questions.

    Quality

    The quality of these data are good, and there were no problems with the dataset.

    Access

    These data are publicly available for download from the provided URL.

    Temporal Coverages

    Spatial Coverages

    Latitude

    Northernmost:
    -65
    Southernmost:
    -75

    Longitude

    Westernmost:
    165
    Easternmost:
    180
    Minimum Altitude:
    0 Metres
    Maximum Altitude:
    0 Metres
    Minimum Depth:
    5 Metres
    Maximum Depth:
    300 Metres

    Data Resolution

    Latitude Resolution:
    2 Metre(s)
    Longitude Resolution:
    2 Metre(s)
    Vertical Resolution:
    0.1 Metre(s)
    Temporal Resolution:
    1 Second(s)

    Science Keywords

    Additional Keywords

      None

    Locations

    • OCEAN > SOUTHERN OCEAN
    • OCEAN > SOUTHERN OCEAN
    • GEOGRAPHIC REGION > POLAR

    Platforms

    • R/V TANGAROA

    Instruments

    • ECHO SOUNDERS

    Researchers

    • o'driscoll, richard (INVESTIGATOR,TECHNICAL CONTACT)
    • ladroit, yoann (INVESTIGATOR,TECHNICAL CONTACT)
    • cox, martin (INVESTIGATOR,TECHNICAL CONTACT)
    • double, mike (INVESTIGATOR)
    • miller, brian (DIF AUTHOR)

    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_4102_KrillAcoustics_2015 when using these data.

    Project

      ISO Topic

      • OCEANS
      • BIOTA

      Dataset Language

      • English

      Orignating Centre

      • Australian Antarctic Division

      Dataset Progress

      • COMPLETE

      IDN Node

      • CEOS
      • AMD/AU
      • AMD

      Publications

      • Miller, E.J., Potts, J.M., Cox, M.J. et al. (2019) The characteristics of krill swarms in relation to aggregating Antarctic blue whales, Sci Rep, 9, 16487, doi:10.1038/s41598-019-52792-4

      Metadata Revision History

        2019-12-10 - record created by Brian Miller on behalf of Martin Cox. 2020-11-12 - record updated by Dave Connell to publicly release the data. 2025-11-27 - record updated by Dave Connell - basic updates.

      Creative Commons License