Data

Bathymetric data of Long and Tryne Fjords at Vestfold Hills, Antarctica, collected in December 1999

Australian Ocean Data Network
Lake, S.E. and Heil, P. ; LAKE, SAMANTHA E ; HEIL, PETRA
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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/VH_bathy_99&rft.title=Bathymetric data of Long and Tryne Fjords at Vestfold Hills, Antarctica, collected in December 1999&rft.identifier=http://data.aad.gov.au/metadata/records/VH_bathy_99&rft.publisher=Australian Antarctic Data Centre&rft.description=This dataset contains 102 depth measurements of the water column in Long and Tryne fjords, which are in the northern Vestfold Hills, Prydz Bay, Antarctica. Sea ice thickness and snow thickness were recorded simultaneously. The motivation for this project has been to yield a description of the pupping and moulting habitat of Weddell seals. This information will assist the interpretation of 25+ years of data on seal distribution within that area. Our data were collected between 7th and 13th December 1999. The measurement sites were chosen according to geographical features; their exact location was determined by GPS with an accuracy of about 25m. At each site a 5cm diameter hole was drilled through the sea ice and a weighted measurement tape was lowered through the ice-hole to the bottom. Water depths were measured to the nearest centimetre; ice and snow thicknesses were measured to the nearest millimetre. A minimum depth of less than 3m was found in a narrow channel between small islands immediately west of Shirokaya Bay. The maximum depth of the water column was 222m in the middle basin of Long Fjord. The tidal range for the measured days was less than 0.5m, with tidal corrections applied to the raw data. Water samples were taken in Breid Basin and the middle basin of Long Fjord. These and water samples taken in Snezhnyy Bay [pers. comm. J. Laybourn-Parry, 1999] show aerobic and relatively fresh water for all upper basins. This indicates that even the far basins of both fjords are well mixed despite the drainage of large volumes meltwater from the Antarctic plateau into the fjords. See related URL for data and a spatial summary of the data. See Entry: long_tryne_bathy for an interpolation of bathymetry made using the Topogrid command within the ArcInfo GIS software, version 8.0.2. Coastline and spot height (heights above sea level) data, extracted from the Australian Antarctic Data Centre's Vestfold Hills topographic GIS dataset (see Entry: vest_hills_gis), was also used as input data to optimise the interpolation close to the coastline. The fields in this dataset are: day weighpoint lat(dd) long(dd) ice (cm) freeboard(cm) snow(cm) depth(m)Progress Code: completedStatement: Depth measurements were made by 10kg, 3cm diameter x 50 cm long cylindrical weight on thin static rope. The effect of current on the rope appeared to be minimal. In places the bottom was muddy and the weight may have sunk into the substrate giving measurements a possible error of +/- 50 cm.&rft.creator=Lake, S.E. and Heil, P. &rft.creator=LAKE, SAMANTHA E &rft.creator=HEIL, PETRA &rft.date=2000&rft.coverage=westlimit=78; southlimit=-69; eastlimit=78; northlimit=-69&rft.coverage=westlimit=78; southlimit=-69; eastlimit=78; northlimit=-69&rft_rights=This metadata record is publicly available.&rft_rights=These data are publicly available for download from the provided URL.&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=VH_bathy_99 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=biota&rft_subject=geoscientificInformation&rft_subject=oceans&rft_subject=inlandWaters&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL&rft_subject=EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS&rft_subject=EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW DEPTH&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > WATER CHANNELS&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY&rft_subject=DAY&rft_subject=DEPTH&rft_subject=ICE&rft_subject=FREEBOARD&rft_subject=LATITUDE&rft_subject=LONGITUDE&rft_subject=SNOW&rft_subject=WEIGHPOINT&rft_subject=STEEL MEASURING TAPE&rft_subject=FIELD INVESTIGATION&rft_subject=FIELD SURVEYS&rft_subject=CEOS&rft_subject=AMD/AU&rft_subject=AMD&rft_subject=ACE/CRC&rft_subject=CONTINENT > ANTARCTICA&rft_subject=CONTINENT > ANTARCTICA > Long Fjord&rft_subject=CONTINENT > ANTARCTICA > Tryne Fjord&rft_subject=CONTINENT > ANTARCTICA > Vestfold Hills&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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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=VH_bathy_99 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 publicly available for download from the provided URL.

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This dataset contains 102 depth measurements of the water column in Long and Tryne fjords, which are in the northern Vestfold Hills, Prydz Bay, Antarctica. Sea ice thickness and snow thickness were recorded simultaneously. The motivation for this project has been to yield a description of the pupping and moulting habitat of Weddell seals. This information will assist the interpretation of 25+ years of data on seal distribution within that area. Our data were collected between 7th and 13th December 1999. The measurement sites were chosen according to geographical features; their exact location was determined by GPS with an accuracy of about 25m. At each site a 5cm diameter hole was drilled through the sea ice and a weighted measurement tape was lowered through the ice-hole to the bottom. Water depths were measured to the nearest centimetre; ice and snow thicknesses were measured to the nearest millimetre. A minimum depth of less than 3m was found in a narrow channel between small islands immediately west of Shirokaya Bay. The maximum depth of the water column was 222m in the middle basin of Long Fjord. The tidal range for the measured days was less than 0.5m, with tidal corrections applied to the raw data. Water samples were taken in Breid Basin and the middle basin of Long Fjord. These and water samples taken in Snezhnyy Bay [pers. comm. J. Laybourn-Parry, 1999] show aerobic and relatively fresh water for all upper basins. This indicates that even the far basins of both fjords are well mixed despite the drainage of large volumes meltwater from the Antarctic plateau into the fjords. See related URL for data and a spatial summary of the data. See Entry: long_tryne_bathy for an interpolation of bathymetry made using the Topogrid command within the ArcInfo GIS software, version 8.0.2. Coastline and spot height (heights above sea level) data, extracted from the Australian Antarctic Data Centre's Vestfold Hills topographic GIS dataset (see Entry: vest_hills_gis), was also used as input data to optimise the interpolation close to the coastline. The fields in this dataset are: day weighpoint lat(dd) long(dd) ice (cm) freeboard(cm) snow(cm) depth(m)

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Progress Code: completed
Statement: Depth measurements were made by 10kg, 3cm diameter x 50 cm long cylindrical weight on thin static rope. The effect of current on the rope appeared to be minimal. In places the bottom was muddy and the weight may have sunk into the substrate giving measurements a possible error of +/- 50 cm.

Data time period: 1999-12-07 to 1999-12-13

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78,-69

text: westlimit=78; southlimit=-69; eastlimit=78; northlimit=-69

Subjects
ACE/CRC | AMD | AMD/AU | CEOS | CONTINENT > ANTARCTICA | CONTINENT > ANTARCTICA > Long Fjord | CONTINENT > ANTARCTICA > Tryne Fjord | CONTINENT > ANTARCTICA > Vestfold Hills | DAY | DEPTH | EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL | EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY | EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS | EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW DEPTH | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > WATER CHANNELS | FIELD INVESTIGATION | FIELD SURVEYS | FREEBOARD | GEOGRAPHIC REGION > POLAR | ICE | LATITUDE | LONGITUDE | SNOW | STEEL MEASURING TAPE | WEIGHPOINT | biota | geoscientificInformation | inlandWaters | oceans |

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Download point for the data and map of measurement sites (GET DATA)

uri : https://data.aad.gov.au/eds/1261/download

Identifiers
  • global : VH_bathy_99
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