Vibrations of Mertz Glacier ice tongue, East Antarctica
International audience At the time of its calving in February 2010, Mertz Glacier, East Antarctica, was characterized by a 145 km long, 35 km wide floating tongue. In this paper, we use GPS data from the Collaborative Research into Antarctic Calving and Iceberg Evolution (CRAC-ICE) 2007/08 and 2009/...
Published in: | Journal of Glaciology |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Online Access: | https://hal.science/hal-00798727 https://hal.science/hal-00798727/document https://hal.science/hal-00798727/file/vibrations-of-mertz-glacier-ice-tongue-east-antarctica.pdf https://doi.org/10.3189/2012JoG11J089 |
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ftunivnantes:oai:HAL:hal-00798727v1 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Lescarmontier, Lydie Legrésy, Benoît Coleman, R. Perosanz, Felix Mayet, Clément Testut, Laurent Vibrations of Mertz Glacier ice tongue, East Antarctica |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience At the time of its calving in February 2010, Mertz Glacier, East Antarctica, was characterized by a 145 km long, 35 km wide floating tongue. In this paper, we use GPS data from the Collaborative Research into Antarctic Calving and Iceberg Evolution (CRAC-ICE) 2007/08 and 2009/10 field seasons to investigate the dynamics of Mertz Glacier. Two months of data were collected at the end of the 2007/08 field season from two kinematic GPS stations situated on each side of the main rift of the glacier tongue and from rock stations located around the ice tongue during 2008/09. Using Precise Point Positioning with integer ambiguity fixing, we observe that the two GPS stations recorded vibrations of the ice tongue with several dominant periods. We compare these results with a simple elastic model of the ice tongue and find that the natural vibration frequencies are similar to those observed. This information provides a better understanding of their possible effects on rift propagation and hence on the glacier calving processes |
author2 |
GLACIO LEGOS Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Géosciences Environnement Toulouse (GET) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Echanges Côte-Large (ECOLA) Océan du Large et Variabilité Climatique (OLVAC) |
format |
Article in Journal/Newspaper |
author |
Lescarmontier, Lydie Legrésy, Benoît Coleman, R. Perosanz, Felix Mayet, Clément Testut, Laurent |
author_facet |
Lescarmontier, Lydie Legrésy, Benoît Coleman, R. Perosanz, Felix Mayet, Clément Testut, Laurent |
author_sort |
Lescarmontier, Lydie |
title |
Vibrations of Mertz Glacier ice tongue, East Antarctica |
title_short |
Vibrations of Mertz Glacier ice tongue, East Antarctica |
title_full |
Vibrations of Mertz Glacier ice tongue, East Antarctica |
title_fullStr |
Vibrations of Mertz Glacier ice tongue, East Antarctica |
title_full_unstemmed |
Vibrations of Mertz Glacier ice tongue, East Antarctica |
title_sort |
vibrations of mertz glacier ice tongue, east antarctica |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-00798727 https://hal.science/hal-00798727/document https://hal.science/hal-00798727/file/vibrations-of-mertz-glacier-ice-tongue-east-antarctica.pdf https://doi.org/10.3189/2012JoG11J089 |
long_lat |
ENVELOPE(144.500,144.500,-67.667,-67.667) |
geographic |
Antarctic East Antarctica Mertz Glacier |
geographic_facet |
Antarctic East Antarctica Mertz Glacier |
genre |
Antarc* Antarctic Antarctica East Antarctica Iceberg* Journal of Glaciology Mertz Glacier |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Iceberg* Journal of Glaciology Mertz Glacier |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-00798727 Journal of Glaciology, 2012, 58 (210), pp.665-676. ⟨10.3189/2012JoG11J089⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/2012JoG11J089 hal-00798727 https://hal.science/hal-00798727 https://hal.science/hal-00798727/document https://hal.science/hal-00798727/file/vibrations-of-mertz-glacier-ice-tongue-east-antarctica.pdf doi:10.3189/2012JoG11J089 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.3189/2012JoG11J089 |
container_title |
Journal of Glaciology |
container_volume |
58 |
container_issue |
210 |
container_start_page |
665 |
op_container_end_page |
676 |
_version_ |
1766275107013001216 |
spelling |
ftunivnantes:oai:HAL:hal-00798727v1 2023-05-15T14:04:06+02:00 Vibrations of Mertz Glacier ice tongue, East Antarctica Lescarmontier, Lydie Legrésy, Benoît Coleman, R. Perosanz, Felix Mayet, Clément Testut, Laurent GLACIO LEGOS Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Géosciences Environnement Toulouse (GET) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) Echanges Côte-Large (ECOLA) Océan du Large et Variabilité Climatique (OLVAC) 2012-08 https://hal.science/hal-00798727 https://hal.science/hal-00798727/document https://hal.science/hal-00798727/file/vibrations-of-mertz-glacier-ice-tongue-east-antarctica.pdf https://doi.org/10.3189/2012JoG11J089 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.3189/2012JoG11J089 hal-00798727 https://hal.science/hal-00798727 https://hal.science/hal-00798727/document https://hal.science/hal-00798727/file/vibrations-of-mertz-glacier-ice-tongue-east-antarctica.pdf doi:10.3189/2012JoG11J089 http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess CC-BY-NC-ND ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-00798727 Journal of Glaciology, 2012, 58 (210), pp.665-676. ⟨10.3189/2012JoG11J089⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2012 ftunivnantes https://doi.org/10.3189/2012JoG11J089 2023-02-22T02:41:09Z International audience At the time of its calving in February 2010, Mertz Glacier, East Antarctica, was characterized by a 145 km long, 35 km wide floating tongue. In this paper, we use GPS data from the Collaborative Research into Antarctic Calving and Iceberg Evolution (CRAC-ICE) 2007/08 and 2009/10 field seasons to investigate the dynamics of Mertz Glacier. Two months of data were collected at the end of the 2007/08 field season from two kinematic GPS stations situated on each side of the main rift of the glacier tongue and from rock stations located around the ice tongue during 2008/09. Using Precise Point Positioning with integer ambiguity fixing, we observe that the two GPS stations recorded vibrations of the ice tongue with several dominant periods. We compare these results with a simple elastic model of the ice tongue and find that the natural vibration frequencies are similar to those observed. This information provides a better understanding of their possible effects on rift propagation and hence on the glacier calving processes Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Iceberg* Journal of Glaciology Mertz Glacier Université de Nantes: HAL-UNIV-NANTES Antarctic East Antarctica Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) Journal of Glaciology 58 210 665 676 |