Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N
International audience Glacier limits are usually mapped according to a spatial discrimination based on color of remote sensing images or aerial photography. What appears like ice (white or light colored areas) at the end of the ablation period (end of summer) corresponds to the glacier, while what...
Published in: | International Journal of Applied Earth Observation and Geoinformation |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2014
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385/document https://hal.archives-ouvertes.fr/hal-00831385/file/IJoAEOG_redacAS.pdf https://doi.org/10.1016/j.jag.2013.07.006 |
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Ground-Penetrating Radar Spitzbergen Arctic polar glacier glacier limit [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes [SPI.OTHER]Engineering Sciences [physics]/Other |
spellingShingle |
Ground-Penetrating Radar Spitzbergen Arctic polar glacier glacier limit [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes [SPI.OTHER]Engineering Sciences [physics]/Other Bernard, Eric Friedt, Jean-Michel Saintenoy, Albane Tolle, Florian Griselin, Madeleine Marlin, Christelle Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N |
topic_facet |
Ground-Penetrating Radar Spitzbergen Arctic polar glacier glacier limit [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes [SPI.OTHER]Engineering Sciences [physics]/Other |
description |
International audience Glacier limits are usually mapped according to a spatial discrimination based on color of remote sensing images or aerial photography. What appears like ice (white or light colored areas) at the end of the ablation period (end of summer) corresponds to the glacier, while what appears as rock (dark areas) is identified as the slope. This kind of visual discretization seems to be insufficient in the case of small arctic glaciers. Indeed, the slopes have been described as very unstable parts of glacial basins. Debris are generated by the inclination of the slopes, and reach the glacier surface. Thus, the visible limit does not correspond to the ice extension: a significant amount of ice is potentially covered by rock debris, enlarging the actual glacier surface with respect to the observed area. Hence, we apply Ground Penetrating Radar (GPR) measurements for mapping, beyond the central parts of the glacier, the steep slopes of the Austre Lovénbreen (Spitsbergen, 79°N). The aim is to assess the discrepancy between the limits extracted from remote sensing methods -- aerial photography, satellite images and derived digital elevation models -- and the GPR data which exhibit significant ice thickness at locations considered outside the glacier itself. The ice is observed to extend typically from 25 to 30 meters, and up to 100~meters, under the slopes. These measurements allow for a new determination of the rock/ice interface location following criteria beyond the visual and morphological characteristics seen from the surface, as obtained by remote sensing techniques or in-situ observations. |
author2 |
Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST) Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC)-Centre National de la Recherche Scientifique (CNRS) Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) IPEV |
format |
Article in Journal/Newspaper |
author |
Bernard, Eric Friedt, Jean-Michel Saintenoy, Albane Tolle, Florian Griselin, Madeleine Marlin, Christelle |
author_facet |
Bernard, Eric Friedt, Jean-Michel Saintenoy, Albane Tolle, Florian Griselin, Madeleine Marlin, Christelle |
author_sort |
Bernard, Eric |
title |
Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N |
title_short |
Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N |
title_full |
Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N |
title_fullStr |
Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N |
title_full_unstemmed |
Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N |
title_sort |
where does a glacier end ? gpr measurements to identify the limits between the slopes and the real glacier area. application to the austre lovénbreen, spitsbergen -- 79°n |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.archives-ouvertes.fr/hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385/document https://hal.archives-ouvertes.fr/hal-00831385/file/IJoAEOG_redacAS.pdf https://doi.org/10.1016/j.jag.2013.07.006 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Spitzbergen Spitsbergen |
genre_facet |
Arctic Spitzbergen Spitsbergen |
op_source |
ISSN: 0303-2434 International Journal of Applied Earth Observation and Geoinformation https://hal.archives-ouvertes.fr/hal-00831385 International Journal of Applied Earth Observation and Geoinformation, Elsevier, 2014, 27 (Part A), pp.100-108. ⟨10.1016/j.jag.2013.07.006⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jag.2013.07.006 hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385/document https://hal.archives-ouvertes.fr/hal-00831385/file/IJoAEOG_redacAS.pdf doi:10.1016/j.jag.2013.07.006 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.jag.2013.07.006 |
container_title |
International Journal of Applied Earth Observation and Geoinformation |
container_volume |
27 |
container_start_page |
100 |
op_container_end_page |
108 |
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1766334019881926656 |
spelling |
ftccsdartic:oai:HAL:hal-00831385v1 2023-05-15T15:02:01+02:00 Where does a glacier end ? GPR measurements to identify the limits between the slopes and the real glacier area. Application to the Austre Lovénbreen, Spitsbergen -- 79°N Bernard, Eric Friedt, Jean-Michel Saintenoy, Albane Tolle, Florian Griselin, Madeleine Marlin, Christelle Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST) Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC)-Centre National de la Recherche Scientifique (CNRS) Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Géosciences Paris Sud (GEOPS) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) IPEV 2014-04-02 https://hal.archives-ouvertes.fr/hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385/document https://hal.archives-ouvertes.fr/hal-00831385/file/IJoAEOG_redacAS.pdf https://doi.org/10.1016/j.jag.2013.07.006 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jag.2013.07.006 hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385 https://hal.archives-ouvertes.fr/hal-00831385/document https://hal.archives-ouvertes.fr/hal-00831385/file/IJoAEOG_redacAS.pdf doi:10.1016/j.jag.2013.07.006 info:eu-repo/semantics/OpenAccess ISSN: 0303-2434 International Journal of Applied Earth Observation and Geoinformation https://hal.archives-ouvertes.fr/hal-00831385 International Journal of Applied Earth Observation and Geoinformation, Elsevier, 2014, 27 (Part A), pp.100-108. ⟨10.1016/j.jag.2013.07.006⟩ Ground-Penetrating Radar Spitzbergen Arctic polar glacier glacier limit [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes [SPI.OTHER]Engineering Sciences [physics]/Other info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.1016/j.jag.2013.07.006 2021-12-12T05:31:43Z International audience Glacier limits are usually mapped according to a spatial discrimination based on color of remote sensing images or aerial photography. What appears like ice (white or light colored areas) at the end of the ablation period (end of summer) corresponds to the glacier, while what appears as rock (dark areas) is identified as the slope. This kind of visual discretization seems to be insufficient in the case of small arctic glaciers. Indeed, the slopes have been described as very unstable parts of glacial basins. Debris are generated by the inclination of the slopes, and reach the glacier surface. Thus, the visible limit does not correspond to the ice extension: a significant amount of ice is potentially covered by rock debris, enlarging the actual glacier surface with respect to the observed area. Hence, we apply Ground Penetrating Radar (GPR) measurements for mapping, beyond the central parts of the glacier, the steep slopes of the Austre Lovénbreen (Spitsbergen, 79°N). The aim is to assess the discrepancy between the limits extracted from remote sensing methods -- aerial photography, satellite images and derived digital elevation models -- and the GPR data which exhibit significant ice thickness at locations considered outside the glacier itself. The ice is observed to extend typically from 25 to 30 meters, and up to 100~meters, under the slopes. These measurements allow for a new determination of the rock/ice interface location following criteria beyond the visual and morphological characteristics seen from the surface, as obtained by remote sensing techniques or in-situ observations. Article in Journal/Newspaper Arctic Spitzbergen Spitsbergen Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic International Journal of Applied Earth Observation and Geoinformation 27 100 108 |