Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica
International audience 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 landfor...
Published in: | Geomorphology |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2017
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-01407386 https://doi.org/10.1016/j.geomorph.2016.09.031 |
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ftccsdartic:oai:HAL:hal-01407386v1 |
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record_format |
openpolar |
institution |
Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Periglacial Ice-free areas RADARSAT-2 Polarimetry South Shetland Islands Geomorphology [SDE]Environmental Sciences [SPI]Engineering Sciences [physics] |
spellingShingle |
Periglacial Ice-free areas RADARSAT-2 Polarimetry South Shetland Islands Geomorphology [SDE]Environmental Sciences [SPI]Engineering Sciences [physics] Schmid, Thomas López-Martínez, Jerónimo Guillaso, Stéphane Serrano, Enrique D'Hondt, Olivier Koch, Magaly Nieto, Ana O'Neill, Tanya Mink, Sandra Durán Valsero, Juan José Maestro, Adolfo Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica |
topic_facet |
Periglacial Ice-free areas RADARSAT-2 Polarimetry South Shetland Islands Geomorphology [SDE]Environmental Sciences [SPI]Engineering Sciences [physics] |
description |
International audience 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 grounds, 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 grounds 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. |
author2 |
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid (CIEMAT) Universidad Autonoma de Madrid (UAM) GIPSA - Signal Images Physique (GIPSA-SIGMAPHY) Département Images et Signal (GIPSA-DIS) Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Technische Universität Berlin (TU) Universidad de Valladolid Valladolid (UVa) Boston University Boston (BU) University of Waikato Hamilton Instituto Geológico y Minero de España (IGME) |
format |
Article in Journal/Newspaper |
author |
Schmid, Thomas López-Martínez, Jerónimo Guillaso, Stéphane Serrano, Enrique D'Hondt, Olivier Koch, Magaly Nieto, Ana O'Neill, Tanya Mink, Sandra Durán Valsero, Juan José Maestro, Adolfo |
author_facet |
Schmid, Thomas López-Martínez, Jerónimo Guillaso, Stéphane Serrano, Enrique D'Hondt, Olivier Koch, Magaly Nieto, Ana O'Neill, Tanya Mink, Sandra Durán Valsero, Juan José Maestro, Adolfo |
author_sort |
Schmid, Thomas |
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 |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01407386 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_source |
ISSN: 0169-555X Geomorphology https://hal.archives-ouvertes.fr/hal-01407386 Geomorphology, Elsevier, 2017, 293 (part B), pp.448-459. ⟨10.1016/j.geomorph.2016.09.031⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2016.09.031 hal-01407386 https://hal.archives-ouvertes.fr/hal-01407386 doi:10.1016/j.geomorph.2016.09.031 |
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 |
_version_ |
1766190418550063104 |
spelling |
ftccsdartic:oai:HAL:hal-01407386v1 2023-05-15T13:43:33+02:00 Geomorphological mapping of ice-free areas using polarimetric RADARSAT-2 data on Fildes Peninsula and Ardley Island, Antarctica Schmid, Thomas López-Martínez, Jerónimo Guillaso, Stéphane Serrano, Enrique D'Hondt, Olivier Koch, Magaly Nieto, Ana O'Neill, Tanya Mink, Sandra Durán Valsero, Juan José Maestro, Adolfo Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid (CIEMAT) Universidad Autonoma de Madrid (UAM) GIPSA - Signal Images Physique (GIPSA-SIGMAPHY) Département Images et Signal (GIPSA-DIS) Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Grenoble Images Parole Signal Automatique (GIPSA-lab ) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Technische Universität Berlin (TU) Universidad de Valladolid Valladolid (UVa) Boston University Boston (BU) University of Waikato Hamilton Instituto Geológico y Minero de España (IGME) 2017-02 https://hal.archives-ouvertes.fr/hal-01407386 https://doi.org/10.1016/j.geomorph.2016.09.031 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2016.09.031 hal-01407386 https://hal.archives-ouvertes.fr/hal-01407386 doi:10.1016/j.geomorph.2016.09.031 ISSN: 0169-555X Geomorphology https://hal.archives-ouvertes.fr/hal-01407386 Geomorphology, Elsevier, 2017, 293 (part B), pp.448-459. ⟨10.1016/j.geomorph.2016.09.031⟩ Periglacial Ice-free areas RADARSAT-2 Polarimetry South Shetland Islands Geomorphology [SDE]Environmental Sciences [SPI]Engineering Sciences [physics] info:eu-repo/semantics/article Journal articles 2017 ftccsdartic https://doi.org/10.1016/j.geomorph.2016.09.031 2021-11-07T04:09:20Z International audience 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 grounds, 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 grounds 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) 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 |