Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E
Geographic location of the outer margin of the Antarctic ice cover for the sector between longitudes 79E and 108E, including margins of ice shelves, glaciers, and iceberg tongues. The data set does not in general include the grounding zone at the inland margin of the ice shelves or glaciers. The mar...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/margin-antarctic-ice-79e-108e/701171 https://doi.org/10.26179/5b88dc76b7a67 https://data.aad.gov.au/metadata/records/IceMargin_79E-108E http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::701171 2023-05-15T13:46:59+02:00 Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E YOUNG, NEAL W (hasPrincipalInvestigator) YOUNG, NEAL W (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-64; southlimit=-68; westlimit=79; eastLimit=108; projection=WGS84 Temporal: From 1993-08-01 to 1997-10-31 https://researchdata.ands.org.au/margin-antarctic-ice-79e-108e/701171 https://doi.org/10.26179/5b88dc76b7a67 https://data.aad.gov.au/metadata/records/IceMargin_79E-108E http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/margin-antarctic-ice-79e-108e/701171 d5b6f879-a735-44bf-a5f1-934b6a821fcb doi:10.26179/5b88dc76b7a67 IceMargin_79E-108E https://data.aad.gov.au/metadata/records/IceMargin_79E-108E http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre geoscientificInformation inlandWaters ICE EXTENT EARTH SCIENCE CRYOSPHERE SNOW/ICE GLACIER FRONT GLACIER TONGUE GLACIOLOGY ICE MARGIN ICE SHELF MARGIN ICEBERG TONGUE ASAR > Advanced Synthetic Aperature Radar SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.26179/5b88dc76b7a67 2020-01-05T21:18:30Z Geographic location of the outer margin of the Antarctic ice cover for the sector between longitudes 79E and 108E, including margins of ice shelves, glaciers, and iceberg tongues. The data set does not in general include the grounding zone at the inland margin of the ice shelves or glaciers. The margin was defined by interpretation of an image mosaic generated from Synthetic Aperture Radar data. The image mosaic was built using navigation data accompanying the SAR images to transform the images to a map projection. The image navigation data were adjusted so that overlapping images were registered to one another, the indivual images merged into a mosaic, and the overall process adjusted so that the mosaic was tied to the few ground control points available in this large sector. Two separate mosaics were used to span the whole sector. The majority of the SAR data were acquired by the ERS-SAR instruments in August 1996, some ERS data were acquired in August 1993, and one Radarsat scene was acquired in September 1997. The data were pre-processed to produce a mosaic with a 100 m pixel size, and adjusted so that the majority of the coastline positions refer to the August 1996 epoch. The location data are internally consistent, and extracted at nominally 200 m intervals. The external position accuracy is generally better than 600 m. The coverage is complete over the whole sector. The coordinate set includes some island/ice rise features. Two very large grounded icebergs are included. Data are in an ascii arc/info export file format as geographic coordinates on the ITRF1996 system and contains attribute information. ERS-SAR data, copyright ESA, 1993, 1996 Radarsat data, copyright Canadian Space Agency, Agence spatiale canadienne, 1997. This work was completed as part of ASAC projects 454, 1125 and 2224 (ASAC_454, ASAC_1125 and ASAC_2224). Dataset Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* Research Data Australia (Australian National Data Service - ANDS) Antarctic Asar ENVELOPE(134.033,134.033,68.667,68.667) The Antarctic ENVELOPE(79,108,-64,-68) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation inlandWaters ICE EXTENT EARTH SCIENCE CRYOSPHERE SNOW/ICE GLACIER FRONT GLACIER TONGUE GLACIOLOGY ICE MARGIN ICE SHELF MARGIN ICEBERG TONGUE ASAR > Advanced Synthetic Aperature Radar SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
geoscientificInformation inlandWaters ICE EXTENT EARTH SCIENCE CRYOSPHERE SNOW/ICE GLACIER FRONT GLACIER TONGUE GLACIOLOGY ICE MARGIN ICE SHELF MARGIN ICEBERG TONGUE ASAR > Advanced Synthetic Aperature Radar SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E |
topic_facet |
geoscientificInformation inlandWaters ICE EXTENT EARTH SCIENCE CRYOSPHERE SNOW/ICE GLACIER FRONT GLACIER TONGUE GLACIOLOGY ICE MARGIN ICE SHELF MARGIN ICEBERG TONGUE ASAR > Advanced Synthetic Aperature Radar SATELLITES CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
Geographic location of the outer margin of the Antarctic ice cover for the sector between longitudes 79E and 108E, including margins of ice shelves, glaciers, and iceberg tongues. The data set does not in general include the grounding zone at the inland margin of the ice shelves or glaciers. The margin was defined by interpretation of an image mosaic generated from Synthetic Aperture Radar data. The image mosaic was built using navigation data accompanying the SAR images to transform the images to a map projection. The image navigation data were adjusted so that overlapping images were registered to one another, the indivual images merged into a mosaic, and the overall process adjusted so that the mosaic was tied to the few ground control points available in this large sector. Two separate mosaics were used to span the whole sector. The majority of the SAR data were acquired by the ERS-SAR instruments in August 1996, some ERS data were acquired in August 1993, and one Radarsat scene was acquired in September 1997. The data were pre-processed to produce a mosaic with a 100 m pixel size, and adjusted so that the majority of the coastline positions refer to the August 1996 epoch. The location data are internally consistent, and extracted at nominally 200 m intervals. The external position accuracy is generally better than 600 m. The coverage is complete over the whole sector. The coordinate set includes some island/ice rise features. Two very large grounded icebergs are included. Data are in an ascii arc/info export file format as geographic coordinates on the ITRF1996 system and contains attribute information. ERS-SAR data, copyright ESA, 1993, 1996 Radarsat data, copyright Canadian Space Agency, Agence spatiale canadienne, 1997. This work was completed as part of ASAC projects 454, 1125 and 2224 (ASAC_454, ASAC_1125 and ASAC_2224). |
author2 |
YOUNG, NEAL W (hasPrincipalInvestigator) YOUNG, NEAL W (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E |
title_short |
Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E |
title_full |
Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E |
title_fullStr |
Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E |
title_full_unstemmed |
Margin of the Antarctic ice cover derived from Synthetic Aperture Radar images for the sector 79E-108E |
title_sort |
margin of the antarctic ice cover derived from synthetic aperture radar images for the sector 79e-108e |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/margin-antarctic-ice-79e-108e/701171 https://doi.org/10.26179/5b88dc76b7a67 https://data.aad.gov.au/metadata/records/IceMargin_79E-108E http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-64; southlimit=-68; westlimit=79; eastLimit=108; projection=WGS84 Temporal: From 1993-08-01 to 1997-10-31 |
long_lat |
ENVELOPE(134.033,134.033,68.667,68.667) ENVELOPE(79,108,-64,-68) |
geographic |
Antarctic Asar The Antarctic |
geographic_facet |
Antarctic Asar The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/margin-antarctic-ice-79e-108e/701171 d5b6f879-a735-44bf-a5f1-934b6a821fcb doi:10.26179/5b88dc76b7a67 IceMargin_79E-108E https://data.aad.gov.au/metadata/records/IceMargin_79E-108E http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.26179/5b88dc76b7a67 |
_version_ |
1766246029338869760 |