Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica
Satellite-borne Synthetic Aperture Radar (SAR) has been used for characterizing and mapping in two relevant ice-free areas in the South Shetland Islands. The objective has been to identify and characterize land surface covers that mainly include periglacial and glacial landforms, using fully polarim...
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Online Access: | https://hdl.handle.net/10289/10933 https://doi.org/10.1016/j.geomorph.2016.09.031 |
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ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/10933 2024-01-21T10:00:16+01:00 Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica Schmid, T. Lopez-Martinez, J. Guillaso, S. Serrano, E. D'Hondt, O. Koch, M. Nieto, A. O'Neill, Tanya Ann Mink, S. Duran, J.J. Maestro, A. 2016 application/pdf https://hdl.handle.net/10289/10933 https://doi.org/10.1016/j.geomorph.2016.09.031 en eng Elsevier http://www.sciencedirect.com/science/article/pii/S0169555X16308819 Geomorphology Schmid, T., Lopez-Martinez, J., Guillaso, S., Serrano, E., D’Hondt, O., Koch, M., … Maestro, A. (2016). Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica. Geomorphology. https://doi.org/10.1016/j.geomorph.2016.09.031 0169-555X https://hdl.handle.net/10289/10933 doi:10.1016/j.geomorph.2016.09.031 This is an author’s accepted version of an article published in the journal: Geomorphology. © 2016 Elsevier periglacial RADARSAT-2 polarimetry geomorphology ice-free areas South Shetland Islands Journal Article 2016 ftunivwaikato https://doi.org/10.1016/j.geomorph.2016.09.031 2023-12-26T18:25:35Z Satellite-borne Synthetic Aperture Radar (SAR) has been used for characterizing and mapping in two relevant ice-free areas in the South Shetland Islands. The objective has been to identify and characterize land surface covers that mainly include periglacial and glacial landforms, using fully polarimetric SAR C band RADARSAT-2 data, on Fildes Peninsula that forms part of King George Island, and Ardley Island. Polarimetric parameters obtained from the SAR data, a selection of field based training and validation sites and a supervised classification approach, using the support vector machine were chosen to determine the spatial distribution of the different landforms. Eight periglacial and glacial landforms were characterized according to their scattering mechanisms using a set of 48 polarimetric parameters. The mapping of the most representative surface covers included colluvial deposits, stone fields and pavements, patterned ground, glacial till and rock outcrops, lakes and glacier ice. The overall accuracy of the results was estimated at 81%, a significant value when mapping areas that are within isolated regions where access is limited. Periglacial surface covers such as stone fields and pavements occupy 25% and patterned ground over 20% of the ice-free areas. These are results that form the basis for an extensive monitoring of the ice-free areas throughout the northern Antarctic Peninsula region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ardley Island King George Island South Shetland Islands The University of Waikato: Research Commons Antarctic Antarctic Peninsula King George Island South Shetland Islands Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) Fildes peninsula ENVELOPE(-58.948,-58.948,-62.182,-62.182) Ardley ENVELOPE(-58.953,-58.953,-62.201,-62.201) Ardley Island ENVELOPE(-58.933,-58.933,-62.213,-62.213) Geomorphology 293 448 459 |
institution |
Open Polar |
collection |
The University of Waikato: Research Commons |
op_collection_id |
ftunivwaikato |
language |
English |
topic |
periglacial RADARSAT-2 polarimetry geomorphology ice-free areas South Shetland Islands |
spellingShingle |
periglacial RADARSAT-2 polarimetry geomorphology ice-free areas South Shetland Islands Schmid, T. Lopez-Martinez, J. Guillaso, S. Serrano, E. D'Hondt, O. Koch, M. Nieto, A. O'Neill, Tanya Ann Mink, S. Duran, J.J. Maestro, A. Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
topic_facet |
periglacial RADARSAT-2 polarimetry geomorphology ice-free areas South Shetland Islands |
description |
Satellite-borne Synthetic Aperture Radar (SAR) has been used for characterizing and mapping in two relevant ice-free areas in the South Shetland Islands. The objective has been to identify and characterize land surface covers that mainly include periglacial and glacial landforms, using fully polarimetric SAR C band RADARSAT-2 data, on Fildes Peninsula that forms part of King George Island, and Ardley Island. Polarimetric parameters obtained from the SAR data, a selection of field based training and validation sites and a supervised classification approach, using the support vector machine were chosen to determine the spatial distribution of the different landforms. Eight periglacial and glacial landforms were characterized according to their scattering mechanisms using a set of 48 polarimetric parameters. The mapping of the most representative surface covers included colluvial deposits, stone fields and pavements, patterned ground, glacial till and rock outcrops, lakes and glacier ice. The overall accuracy of the results was estimated at 81%, a significant value when mapping areas that are within isolated regions where access is limited. Periglacial surface covers such as stone fields and pavements occupy 25% and patterned ground over 20% of the ice-free areas. These are results that form the basis for an extensive monitoring of the ice-free areas throughout the northern Antarctic Peninsula region. |
format |
Article in Journal/Newspaper |
author |
Schmid, T. Lopez-Martinez, J. Guillaso, S. Serrano, E. D'Hondt, O. Koch, M. Nieto, A. O'Neill, Tanya Ann Mink, S. Duran, J.J. Maestro, A. |
author_facet |
Schmid, T. Lopez-Martinez, J. Guillaso, S. Serrano, E. D'Hondt, O. Koch, M. Nieto, A. O'Neill, Tanya Ann Mink, S. Duran, J.J. Maestro, A. |
author_sort |
Schmid, T. |
title |
Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
title_short |
Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
title_full |
Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
title_fullStr |
Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
title_full_unstemmed |
Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
title_sort |
geomorphological mapping of ice-free areas using polarimetric radarsat-2 data on fildes peninsula and ardley island, antarctica |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://hdl.handle.net/10289/10933 https://doi.org/10.1016/j.geomorph.2016.09.031 |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-58.948,-58.948,-62.182,-62.182) ENVELOPE(-58.953,-58.953,-62.201,-62.201) ENVELOPE(-58.933,-58.933,-62.213,-62.213) |
geographic |
Antarctic Antarctic Peninsula King George Island South Shetland Islands Fildes Fildes peninsula Ardley Ardley Island |
geographic_facet |
Antarctic Antarctic Peninsula King George Island South Shetland Islands Fildes Fildes peninsula Ardley Ardley Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ardley Island King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ardley Island King George Island South Shetland Islands |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0169555X16308819 Geomorphology Schmid, T., Lopez-Martinez, J., Guillaso, S., Serrano, E., D’Hondt, O., Koch, M., … Maestro, A. (2016). Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica. Geomorphology. https://doi.org/10.1016/j.geomorph.2016.09.031 0169-555X https://hdl.handle.net/10289/10933 doi:10.1016/j.geomorph.2016.09.031 |
op_rights |
This is an author’s accepted version of an article published in the journal: Geomorphology. © 2016 Elsevier |
op_doi |
https://doi.org/10.1016/j.geomorph.2016.09.031 |
container_title |
Geomorphology |
container_volume |
293 |
container_start_page |
448 |
op_container_end_page |
459 |
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1788702977004929024 |