Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica
International audience The deployment of a seismic network along the Adélie and George V coasts in East Antarctica during the period 2009–2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. He...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://hal.univ-reunion.fr/hal-01236143 https://hal.univ-reunion.fr/hal-01236143/document https://hal.univ-reunion.fr/hal-01236143/file/Barruol_Icequakes_Mertz_Glacier_Antarctica_GRL2013.pdf https://doi.org/10.1002/2013GL057814 |
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ftclermontuniv:oai:HAL:hal-01236143v1 |
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openpolar |
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Open Polar |
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HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) |
op_collection_id |
ftclermontuniv |
language |
English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice R., R. Bascou, Jerôme Legrésy, Benoit Lescarmontier, Lydie Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience The deployment of a seismic network along the Adélie and George V coasts in East Antarctica during the period 2009–2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. Here we focus on records from a seismometer located on a rocky outcrop in the vicinity of the grounding line of the 35 km broad Mertz glacier, a major outflow of this region. We detect numerous icequakes (50,000 events within 10 months and up to 100 events/h) and demonstrate their clear tidal modulation. We suggest that they result from ice friction and fracturing around the rocky peak and from the glacier flexure in response to the falling and rising tides at its grounding area. We propose that such icequake monitoring could be used as a climate proxy since grounding lines are subject to migrate with sea level changes. |
author2 |
Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Laboratoire GéoSciences Réunion (LGSR) Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris) Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-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) Research School of Earth Sciences ANU, Canberra (RSES) ANU College of Science Canberra Australian National University (ANU)-Australian National University (ANU) |
format |
Article in Journal/Newspaper |
author |
Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice R., R. Bascou, Jerôme Legrésy, Benoit Lescarmontier, Lydie |
author_facet |
Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice R., R. Bascou, Jerôme Legrésy, Benoit Lescarmontier, Lydie |
author_sort |
Barruol, Guilhem |
title |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_short |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_full |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_fullStr |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_full_unstemmed |
Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica |
title_sort |
tide-induced microseismicity in the mertz glacier grounding area, east antarctica |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.univ-reunion.fr/hal-01236143 https://hal.univ-reunion.fr/hal-01236143/document https://hal.univ-reunion.fr/hal-01236143/file/Barruol_Icequakes_Mertz_Glacier_Antarctica_GRL2013.pdf https://doi.org/10.1002/2013GL057814 |
long_lat |
ENVELOPE(144.500,144.500,-67.667,-67.667) ENVELOPE(-126.203,-126.203,57.733,57.733) |
geographic |
East Antarctica Mertz Glacier Rocky Peak |
geographic_facet |
East Antarctica Mertz Glacier Rocky Peak |
genre |
Antarc* Antarctica East Antarctica Mertz Glacier |
genre_facet |
Antarc* Antarctica East Antarctica Mertz Glacier |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.univ-reunion.fr/hal-01236143 Geophysical Research Letters, 2013, ⟨10.1002/2013GL057814⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2013GL057814 hal-01236143 https://hal.univ-reunion.fr/hal-01236143 https://hal.univ-reunion.fr/hal-01236143/document https://hal.univ-reunion.fr/hal-01236143/file/Barruol_Icequakes_Mertz_Glacier_Antarctica_GRL2013.pdf doi:10.1002/2013GL057814 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2013GL057814 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
20 |
container_start_page |
5412 |
op_container_end_page |
5416 |
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1798836195299426304 |
spelling |
ftclermontuniv:oai:HAL:hal-01236143v1 2024-05-12T07:56:13+00:00 Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice R., R. Bascou, Jerôme Legrésy, Benoit Lescarmontier, Lydie Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) Laboratoire GéoSciences Réunion (LGSR) Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris) Laboratoire Magmas et Volcans (LMV) Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-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) Research School of Earth Sciences ANU, Canberra (RSES) ANU College of Science Canberra Australian National University (ANU)-Australian National University (ANU) 2013 https://hal.univ-reunion.fr/hal-01236143 https://hal.univ-reunion.fr/hal-01236143/document https://hal.univ-reunion.fr/hal-01236143/file/Barruol_Icequakes_Mertz_Glacier_Antarctica_GRL2013.pdf https://doi.org/10.1002/2013GL057814 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2013GL057814 hal-01236143 https://hal.univ-reunion.fr/hal-01236143 https://hal.univ-reunion.fr/hal-01236143/document https://hal.univ-reunion.fr/hal-01236143/file/Barruol_Icequakes_Mertz_Glacier_Antarctica_GRL2013.pdf doi:10.1002/2013GL057814 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.univ-reunion.fr/hal-01236143 Geophysical Research Letters, 2013, ⟨10.1002/2013GL057814⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2013 ftclermontuniv https://doi.org/10.1002/2013GL057814 2024-04-14T23:46:38Z International audience The deployment of a seismic network along the Adélie and George V coasts in East Antarctica during the period 2009–2012 provides the opportunity to monitor cryoseismic activity and to obtain new insights on the relationship between tidal cycles and coastal glacier dynamics. Here we focus on records from a seismometer located on a rocky outcrop in the vicinity of the grounding line of the 35 km broad Mertz glacier, a major outflow of this region. We detect numerous icequakes (50,000 events within 10 months and up to 100 events/h) and demonstrate their clear tidal modulation. We suggest that they result from ice friction and fracturing around the rocky peak and from the glacier flexure in response to the falling and rising tides at its grounding area. We propose that such icequake monitoring could be used as a climate proxy since grounding lines are subject to migrate with sea level changes. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Mertz Glacier HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) East Antarctica Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) Rocky Peak ENVELOPE(-126.203,-126.203,57.733,57.733) Geophysical Research Letters 40 20 5412 5416 |