Data

Seal Tag Calibration Data from the Denman Marine Voyage of the RSV Nuyina, 2025

Australian Antarctic Division
Weis, J. ; WEIS, JAKOB
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
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/AAS_4630_voyage_202425030_DMV_Biology&rft.title=Seal Tag Calibration Data from the Denman Marine Voyage of the RSV Nuyina, 2025&rft.identifier=http://data.aad.gov.au/metadata/AAS_4630_voyage_202425030_DMV_Biology&rft.publisher=Australian Antarctic Data Centre&rft.description=This dataset was collected during the Denman Marine Voyage (V03) to calibrate 20 satellite-linked data loggers (seal tags) equipped with CTD and, in some cases, fluorescence and light sensors. Calibration was performed by attaching 8–12 tags per cast to the CTD frame across five CTD casts (#006, #007, #052, #082, #105), with each tag deployed on 2–3 casts. This approach provided co-located measurements of pressure, temperature, salinity, fluorescence, and PAR for comparison with the CTD reference sensors. Calibration coefficients were derived via linear regression between tag and CTD measurements. The dataset includes raw text files downloaded from the tags after each deployment, containing tabular data and metadata, along with cleaned versions of these files containing measurement data only, suitable for calibration analysis. Files are organised by CTD deployment (‘CTD_[cast_no]’). Each deployment folder contains two subdirectories: ‘tag_data’ and ‘calib_data’. The tag_data directory includes the full raw text files retrieved from the tags (named ‘[tag_ID]_debug.txt’), which contain both measurements and logging metadata. The calib_data directory contains cleaned versions of these files (named ‘[tag_ID]_calib.txt’), with only the measurement data retained.See the metadata file in the dataset download for more details, including a table of information.Progress Code: completedStatement: The following issues should be considered when using the data for calibration or further analyses: - Fluorescence sensors were not turned during deployments on casts 006 and 007. - Tags 14968, 15468, and 15649 show significant salinity drift with depth due to an error in the onboard salinity calculation—these tags incorrectly assume surface pressure (0 dbar) in the salinity algorithm, resulting in a positive salinity bias with increasing depth. - Tag 12973 failed to log surface data on both casts it was deployed on: it only began recording at ~450 m on cast 006 and 400 m on cast 105. - Tag 15956 returned questionable fluorescence data during cast 052 and recorded flat zero values during cast 082, indicating likely sensor failure. - Tag 15982 stopped logging after 150 m during cast 006 but recorded a full profile during cast 105. &rft.creator=Weis, J. &rft.creator=WEIS, JAKOB &rft.date=2025&rft.coverage=westlimit=98.5232; southlimit=-66.0218; eastlimit=101.2172; northlimit=-60.583&rft.coverage=westlimit=98.5232; southlimit=-66.0218; eastlimit=101.2172; northlimit=-60.583&rft_rights=These data are not yet publicly available for download.&rft_rights=Attribution 4.0 International (CC BY 4.0) 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_4630_voyage_202425030_DMV_Biology when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=oceans&rft_subject=biota&rft_subject=EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE&rft_subject=EARTH SCIENCE > OCEANS > SALINITY/DENSITY > OCEAN SALINITY > OCEAN SALINITY PROFILES&rft_subject=EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE&rft_subject=EARTH SCIENCE > OCEANS > OCEAN OPTICS > PHOTOSYNTHETICALLY ACTIVE RADIATION&rft_subject=EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > OCEAN TEMPERATURE PROFILES&rft_subject=EARTH SCIENCE > OCEANS > OCEAN OPTICS > CHLOROPHYLL&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES&rft_subject=DENMAN&rft_subject=DMV&rft_subject=TAGS&rft_subject=TEMPERATURE LOGGERS > TEMPERATURE LOGGERS&rft_subject=SALINOMETERS&rft_subject=FLUOROMETERS > FLUOROMETERS&rft_subject=PAR SENSORS > Photosynthetically Active Radiation Sensors&rft_subject=R/V Nuyina > R/V Nuyina&rft_subject=AMD/AU&rft_subject=AMD&rft_subject=CEOS&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=CONTINENT > ANTARCTICA > DENMAN GLACIER&rft_subject=OCEAN > SOUTHERN OCEAN > EAST ANTARCTIC CONTINENTAL SHELF&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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Licence & Rights:

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CC-BY

Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are not yet publicly available for download.

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_4630_voyage_202425030_DMV_Biology when using these data.

This metadata record is publicly available.

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Full description

This dataset was collected during the Denman Marine Voyage (V03) to calibrate 20 satellite-linked data loggers (seal tags) equipped with CTD and, in some cases, fluorescence and light sensors. Calibration was performed by attaching 8–12 tags per cast to the CTD frame across five CTD casts (#006, #007, #052, #082, #105), with each tag deployed on 2–3 casts. This approach provided co-located measurements of pressure, temperature, salinity, fluorescence, and PAR for comparison with the CTD reference sensors. Calibration coefficients were derived via linear regression between tag and CTD measurements.

The dataset includes raw text files downloaded from the tags after each deployment, containing tabular data and metadata, along with cleaned versions of these files containing measurement data only, suitable for calibration analysis. Files are organised by CTD deployment (‘CTD_[cast_no]’). Each deployment folder contains two subdirectories: ‘tag_data’ and ‘calib_data’. The tag_data directory includes the full raw text files retrieved from the tags (named ‘[tag_ID]_debug.txt’), which contain both measurements and logging metadata. The calib_data directory contains cleaned versions of these files (named ‘[tag_ID]_calib.txt’), with only the measurement data retained.

See the metadata file in the dataset download for more details, including a table of information.

Lineage

Progress Code: completed
Statement: The following issues should be considered when using the data for calibration or further analyses: - Fluorescence sensors were not turned during deployments on casts 006 and 007. - Tags 14968, 15468, and 15649 show significant salinity drift with depth due to an error in the onboard salinity calculation—these tags incorrectly assume surface pressure (0 dbar) in the salinity algorithm, resulting in a positive salinity bias with increasing depth. - Tag 12973 failed to log surface data on both casts it was deployed on: it only began recording at ~450 m on cast 006 and 400 m on cast 105. - Tag 15956 returned questionable fluorescence data during cast 052 and recorded flat zero values during cast 082, indicating likely sensor failure. - Tag 15982 stopped logging after 150 m during cast 006 but recorded a full profile during cast 105.

Data time period: 2025-03-15 to 2025-04-24

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101.2172,-60.583 101.2172,-66.0218 98.5232,-66.0218 98.5232,-60.583 101.2172,-60.583

99.8702,-63.3024

text: westlimit=98.5232; southlimit=-66.0218; eastlimit=101.2172; northlimit=-60.583

Subjects
AMD | AMD/AU | CEOS | CONTINENT > ANTARCTICA > DENMAN GLACIER | DENMAN | DMV | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES | EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON | EARTH SCIENCE > OCEANS > OCEAN OPTICS > CHLOROPHYLL | EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE | EARTH SCIENCE > OCEANS > OCEAN OPTICS > PHOTOSYNTHETICALLY ACTIVE RADIATION | EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE | EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > OCEAN TEMPERATURE PROFILES | EARTH SCIENCE > OCEANS > SALINITY/DENSITY > OCEAN SALINITY > OCEAN SALINITY PROFILES | FLUOROMETERS > FLUOROMETERS | GEOGRAPHIC REGION > POLAR | OCEAN > SOUTHERN OCEAN | OCEAN > SOUTHERN OCEAN > EAST ANTARCTIC CONTINENTAL SHELF | PAR SENSORS > Photosynthetically Active Radiation Sensors | R/V Nuyina > R/V Nuyina | SALINOMETERS | TAGS | TEMPERATURE LOGGERS > TEMPERATURE LOGGERS | biota | oceans |

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

uri : https://data.aad.gov.au/eds/6083/download

Public information for AAS project AAS_4630 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_4630

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

uri : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4630_voyage_202425030_DMV_Biology

Identifiers
  • global : AAS_4630_voyage_202425030_DMV_Biology