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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Subjects: | |
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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ftccsdartic:oai:HAL:hal-01236143v1 |
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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 |
[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., 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) Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS) Laboratoire GéoSciences Réunion (LGSR) Université de La Réunion (UR)-Institut de Physique du Globe de Paris Laboratoire Magmas et Volcans (LMV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet Saint-Étienne (UJM)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS)-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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Research School of Earth Sciences Canberra (RSES) Australian National University (ANU) |
format |
Article in Journal/Newspaper |
author |
Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice R., Bascou, Jerôme Legrésy, Benoit Lescarmontier, Lydie |
author_facet |
Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice 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, American Geophysical Union, 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 |
_version_ |
1766039172954456064 |
spelling |
ftccsdartic:oai:HAL:hal-01236143v1 2023-05-15T13:33:10+02:00 Tide-induced microseismicity in the Mertz glacier grounding area, East Antarctica Barruol, Guilhem Cordier, Emmanuel Fontaine, Fabrice R., Bascou, Jerôme Legrésy, Benoit Lescarmontier, Lydie Institut de Physique du Globe de Paris (IPGP) Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS) Laboratoire GéoSciences Réunion (LGSR) Université de La Réunion (UR)-Institut de Physique du Globe de Paris Laboratoire Magmas et Volcans (LMV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet Saint-Étienne (UJM)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS)-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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) Research School of Earth Sciences Canberra (RSES) 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, American Geophysical Union, 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 ftccsdartic https://doi.org/10.1002/2013GL057814 2021-10-31T11:18:12Z 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) 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 |