Data

CTD Data from the toothfish fishery at Heard Island and McDonald Island

Australian Ocean Data Network
Ziegler, P. and Lamb, T. ; ZIEGLER, PHILIPPE ; LAMB, TIM
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/records/AAS_4578_CTD_HIMI&rft.title=CTD Data from the toothfish fishery at Heard Island and McDonald Island&rft.identifier=http://data.aad.gov.au/metadata/records/AAS_4578_CTD_HIMI&rft.publisher=Australian Antarctic Data Centre&rft.description=Australian vessels fishing in the Commonwealth managed fishery for Patagonian Toothfish and mackerel icefish in the Heard Island and MacDonald Island area deployed conductivity, temperature and depth (CTD) loggers attached to their fishing gear. In most cases CTDs were deployed on demersal longlines but in some cases they were attached to trawl nets and traps. Data were collected on five fishing vessels during the fishing seasons of 2019/20 and 2020/21 The data were collected with a CTD (Conductivity, Temperature and Depth Recorder) from the Sea Mammal Research Unit (SMRU) at St Andrew’s University Scotland. Files were downloaded with their TagConfig software in text (.txt) format. Recordings were made at (typically) 1 second intervals for the duration of the fishing event, recording data throughout the water column while setting the gear, then while fishing on the sea floor and again through the water column when the gear was retrieved. Each data file has data on date/time, pressure referenced to surface pressure (dbar), absolute pressure (dbar), temperature (°C), conductivity *mS/cm) and salinity (psu). The data are currently not linked to geographical coordinates which are confidential, but these may be able to be released on contact with the data owner and subject to appropriate confidentiality arrangements. Number of deployments: 2019/20: 25 2020/21: 27Progress Code: onGoingStatement: In most cases CTDs were calibrated by the NATA accredited CSIRO Oceanographic Calibration Facility prior to deployment. Calibration reports can be made available on application to the data owner. There was an issue relating to calibration of CTD numbers 15075,15078 and 15079 after their firmware was updated around January 2021 which may have corrupted the pressure sensor data and the programmed recording cycle.&rft.creator=Ziegler, P. and Lamb, T. &rft.creator=ZIEGLER, PHILIPPE &rft.creator=LAMB, TIM &rft.date=2022&rft.coverage=westlimit=69.08203; southlimit=-55.67758; eastlimit=79.10156; northlimit=-50.28934&rft.coverage=westlimit=69.08203; southlimit=-55.67758; eastlimit=79.10156; northlimit=-50.28934&rft_rights=This metadata record is publicly available.&rft_rights=These data are not publicly available for download.&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=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_4578_CTD_HIMI when using these data. http://creativecommons.org/licenses/by/4.0/).&rft_rights=Portable Network Graphic&rft_rights=https://i.creativecommons.org/l/by/3.0/88x31.png&rft_rights=Creative Commons by Attribution logo&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights=Legal code for Creative Commons by Attribution 4.0 International license&rft_rights=Attribution 4.0 International (CC BY 4.0)&rft_rights= https://creativecommons.org/licenses/by/4.0/legalcode&rft_subject=oceans&rft_subject=EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY&rft_subject=EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY&rft_subject=EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH&rft_subject=EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE&rft_subject=FISHING VESSELS&rft_subject=CTD > Conductivity Temperature Depth&rft_subject=SHIPS&rft_subject=AMD&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=OCEAN > SOUTHERN OCEAN > KERGUELEN PLATEAU&rft.type=dataset&rft.language=English Access the data
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https://creativecommons.org/licenses/by/4.0/legalcode

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_4578_CTD_HIMI when using these data.
http://creativecommons.org/licenses/by/4.0/).

Attribution 4.0 International (CC BY 4.0)

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This metadata record is publicly available.

These data are not publicly available for download.

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Attribution 4.0 International (CC BY 4.0)

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Brief description

Australian vessels fishing in the Commonwealth managed fishery for Patagonian Toothfish and mackerel icefish in the Heard Island and MacDonald Island area deployed conductivity, temperature and depth (CTD) loggers attached to their fishing gear. In most cases CTDs were deployed on demersal longlines but in some cases they were attached to trawl nets and traps. Data were collected on five fishing vessels during the fishing seasons of 2019/20 and 2020/21 The data were collected with a CTD (Conductivity, Temperature and Depth Recorder) from the Sea Mammal Research Unit (SMRU) at St Andrew’s University Scotland. Files were downloaded with their TagConfig software in text (.txt) format. Recordings were made at (typically) 1 second intervals for the duration of the fishing event, recording data throughout the water column while setting the gear, then while fishing on the sea floor and again through the water column when the gear was retrieved. Each data file has data on date/time, pressure referenced to surface pressure (dbar), absolute pressure (dbar), temperature (°C), conductivity *mS/cm) and salinity (psu). The data are currently not linked to geographical coordinates which are confidential, but these may be able to be released on contact with the data owner and subject to appropriate confidentiality arrangements. Number of deployments: 2019/20: 25 2020/21: 27

Lineage

Progress Code: onGoing
Statement: In most cases CTDs were calibrated by the NATA accredited CSIRO Oceanographic Calibration Facility prior to deployment. Calibration reports can be made available on application to the data owner. There was an issue relating to calibration of CTD numbers 15075,15078 and 15079 after their firmware was updated around January 2021 which may have corrupted the pressure sensor data and the programmed recording cycle.

Notes

Purpose
Data have been collected in order to inform understanding of environmental variability of oceanographic conditions on the fishing grounds.

Data time period: 2020-05-02 to 2021-12-10

This dataset is part of a larger collection

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79.10156,-50.28934 79.10156,-55.67758 69.08203,-55.67758 69.08203,-50.28934 79.10156,-50.28934

74.091795,-52.98346

text: westlimit=69.08203; southlimit=-55.67758; eastlimit=79.10156; northlimit=-50.28934

Subjects
AMD | AMD/AU | CEOS | CTD > Conductivity Temperature Depth | EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH | EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE | EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY | EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY | FISHING VESSELS | GEOGRAPHIC REGION > POLAR | OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS | OCEAN > SOUTHERN OCEAN > KERGUELEN PLATEAU | SHIPS | oceans |

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Other Information
Download the dataset. (GET DATA > DIRECT DOWNLOAD)

uri : https://data.aad.gov.au/eds/5452/download

Identifiers
  • global : AAS_4578_CTD_HIMI
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