Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map
This map shows the distribution of the iceberg data extracted from ERS SAR images. Icebergs are identified in Synthetic Aperture Radar [SAR] images by image analysis using the texture and intensity of the microwave backscatter observations. The images are segmented using an edge detecting algorithm,...
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Online Access: | https://researchdata.ands.org.au/antarctic-iceberg-sizes-analysis-map/686837 https://data.aad.gov.au/metadata/records/AAD_Ant_iceberg_SAR https://data.aad.gov.au/eds/1840/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2187 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAD_Ant_iceberg_SAR |
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ftands:oai:ands.org.au::686837 2023-05-15T13:46:56+02:00 Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-55; southlimit=-80; westlimit=70; eastLimit=135 Temporal: From 1991-09-01 to 1991-09-01 https://researchdata.ands.org.au/antarctic-iceberg-sizes-analysis-map/686837 https://data.aad.gov.au/metadata/records/AAD_Ant_iceberg_SAR https://data.aad.gov.au/eds/1840/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2187 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAD_Ant_iceberg_SAR unknown Australian Ocean Data Network https://researchdata.ands.org.au/antarctic-iceberg-sizes-analysis-map/686837 c8bbb233-1950-472f-8b79-115acb8acf66 https://data.aad.gov.au/metadata/records/AAD_Ant_iceberg_SAR https://data.aad.gov.au/eds/1840/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2187 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAD_Ant_iceberg_SAR https://data.aad.gov.au geoscientificInformation inlandWaters oceans ICEBERGS EARTH SCIENCE CRYOSPHERE SEA ICE IMAGE ANALYSIS ICEBERG MICROWAVE SAR SATELLITE SYNTHETIC APERTURE RADAR TEXTURE SAR > ERS-1 > European Remote Sensing Satellite-1 ERS-2 > European Remote Sensing Satellite-2 RADARSAT-1 AMD/AU CEOS AMD ACE/CRC OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:07:56Z This map shows the distribution of the iceberg data extracted from ERS SAR images. Icebergs are identified in Synthetic Aperture Radar [SAR] images by image analysis using the texture and intensity of the microwave backscatter observations. The images are segmented using an edge detecting algorithm, and segments identified as iceberg or background, which may be sea ice, open water, or a mixture of both. Dimensions of the icebergs are derived by spatial analysis of the corresponding image segments. Location of the iceberg is derived from its position within the image and the navigation data that gives the location and orientation of the image. More than 20,000 individual observations have been extracted from SAR images acquired by the European Space Agency's ERS-1 and 2 satellites and the Canadian Space Agency's Radarsat satellite. Because images can overlap, some proportion of the observations represent multiple observations of the same set of icebergs. Most observations relate to the sector between longitudes 70E and 135E. The data set includes observations from several other discrete areas around the Antarctic coast. In general observations are within 200 km of the coast but in limited areas extend to about 500 km from the coast. This metadata record has been derived from work performed under the auspices of ASAC project 2187 (ASAC_2187). The map in the pdf file shows the extent of the coverage of individual SAR scenes used in the analysis and the abundance and size characteristics (by a limited colour palette) of the identified icebergs. Dataset Antarc* Antarctic Antarctica Iceberg* Sea ice Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Antarctic Southern Ocean The Antarctic ENVELOPE(70,135,-55,-80) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation inlandWaters oceans ICEBERGS EARTH SCIENCE CRYOSPHERE SEA ICE IMAGE ANALYSIS ICEBERG MICROWAVE SAR SATELLITE SYNTHETIC APERTURE RADAR TEXTURE SAR > ERS-1 > European Remote Sensing Satellite-1 ERS-2 > European Remote Sensing Satellite-2 RADARSAT-1 AMD/AU CEOS AMD ACE/CRC OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
geoscientificInformation inlandWaters oceans ICEBERGS EARTH SCIENCE CRYOSPHERE SEA ICE IMAGE ANALYSIS ICEBERG MICROWAVE SAR SATELLITE SYNTHETIC APERTURE RADAR TEXTURE SAR > ERS-1 > European Remote Sensing Satellite-1 ERS-2 > European Remote Sensing Satellite-2 RADARSAT-1 AMD/AU CEOS AMD ACE/CRC OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map |
topic_facet |
geoscientificInformation inlandWaters oceans ICEBERGS EARTH SCIENCE CRYOSPHERE SEA ICE IMAGE ANALYSIS ICEBERG MICROWAVE SAR SATELLITE SYNTHETIC APERTURE RADAR TEXTURE SAR > ERS-1 > European Remote Sensing Satellite-1 ERS-2 > European Remote Sensing Satellite-2 RADARSAT-1 AMD/AU CEOS AMD ACE/CRC OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
This map shows the distribution of the iceberg data extracted from ERS SAR images. Icebergs are identified in Synthetic Aperture Radar [SAR] images by image analysis using the texture and intensity of the microwave backscatter observations. The images are segmented using an edge detecting algorithm, and segments identified as iceberg or background, which may be sea ice, open water, or a mixture of both. Dimensions of the icebergs are derived by spatial analysis of the corresponding image segments. Location of the iceberg is derived from its position within the image and the navigation data that gives the location and orientation of the image. More than 20,000 individual observations have been extracted from SAR images acquired by the European Space Agency's ERS-1 and 2 satellites and the Canadian Space Agency's Radarsat satellite. Because images can overlap, some proportion of the observations represent multiple observations of the same set of icebergs. Most observations relate to the sector between longitudes 70E and 135E. The data set includes observations from several other discrete areas around the Antarctic coast. In general observations are within 200 km of the coast but in limited areas extend to about 500 km from the coast. This metadata record has been derived from work performed under the auspices of ASAC project 2187 (ASAC_2187). The map in the pdf file shows the extent of the coverage of individual SAR scenes used in the analysis and the abundance and size characteristics (by a limited colour palette) of the identified icebergs. |
author2 |
AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) |
format |
Dataset |
title |
Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map |
title_short |
Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map |
title_full |
Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map |
title_fullStr |
Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map |
title_full_unstemmed |
Antarctic iceberg sizes and spatial distribution from SAR image analysis - Map |
title_sort |
antarctic iceberg sizes and spatial distribution from sar image analysis - map |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.ands.org.au/antarctic-iceberg-sizes-analysis-map/686837 https://data.aad.gov.au/metadata/records/AAD_Ant_iceberg_SAR https://data.aad.gov.au/eds/1840/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2187 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAD_Ant_iceberg_SAR |
op_coverage |
Spatial: northlimit=-55; southlimit=-80; westlimit=70; eastLimit=135 Temporal: From 1991-09-01 to 1991-09-01 |
long_lat |
ENVELOPE(70,135,-55,-80) |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Iceberg* Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Iceberg* Sea ice Southern Ocean |
op_source |
https://data.aad.gov.au |
op_relation |
https://researchdata.ands.org.au/antarctic-iceberg-sizes-analysis-map/686837 c8bbb233-1950-472f-8b79-115acb8acf66 https://data.aad.gov.au/metadata/records/AAD_Ant_iceberg_SAR https://data.aad.gov.au/eds/1840/download https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=2187 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAD_Ant_iceberg_SAR |
_version_ |
1766245712336519168 |