Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals
International audience One main concern in climate science is to reduce uncertainties on sea level predictions. In particular,these uncertainties depend on the quantification of the mass losses of polar ice caps including Greenlandice sheet. Iceberg calving at Greenland glaciers accounts for up to h...
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2019
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Online Access: | https://hal.science/hal-02571877 https://hal.science/hal-02571877/document https://hal.science/hal-02571877/file/PaulineBonnet_Article_CFM_2019.pdf |
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Université de Nantes: HAL-UNIV-NANTES |
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French |
topic |
[PHYS]Physics [physics] [SDU]Sciences of the Universe [physics] [SPI]Engineering Sciences [physics] |
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[PHYS]Physics [physics] [SDU]Sciences of the Universe [physics] [SPI]Engineering Sciences [physics] Bonnet, Pauline Yastrebov, V, A Mangeney, A. Castelnau, Olivier Queutey, P. Leroyer, Alban Sergeant, A. Stutzmann, E. Montagner, J-P Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
topic_facet |
[PHYS]Physics [physics] [SDU]Sciences of the Universe [physics] [SPI]Engineering Sciences [physics] |
description |
International audience One main concern in climate science is to reduce uncertainties on sea level predictions. In particular,these uncertainties depend on the quantification of the mass losses of polar ice caps including Greenlandice sheet. Iceberg calving at Greenland glaciers accounts for up to half of ice losses at glacier termini.Some icebergs detaching from Greenland glaciers have the height of the glacier and are thin so unstableand capsize exerting a force on the glacier front which generates a seismic wave recorded at stationsin Greenland and further away. These seismic signals have been recorded for the last twenty-five yearsby the permanent stations. The number of such events has increased and the spatial distribution hasevolved. What is the evolution of the volume of capsizing icebergs ?Field data on capsizing icebergs are lacking, except for seismic data. Indeed, the database of seismicsignals gives continuous information about iceberg capsize events: we aim to extract information fromthese data. The characteristics of seismic signals depend on the iceberg volume and the whole dynamicof the capsizing iceberg [2]. The global aim of this work is to calculate the volum of capsizing icebergs.To do this, we compare recorded seismic signals to synthetic seismic signals calculated using a modelof iceberg capsize. Therefore, we solve an inverse problem to obtain information on the dynamic of thecapsize and in particular an estimation of the volume of the iceberg.Iceberg capsize dynamics depends on complex phenomena: iceberg-water interactions, iceberg-glacierfriction, glacier-sea floor friction, elasto-viscoplastic deformation of ice. Solving directly fluid flow, solidmotion, and contact equations even in two dimensions is very costly and can hardly be used to generatecatalogs and to solve inverse problem. Therefore, a simplified mechanical model of a capsizing icebergin water has been developed based on few assumptions. The proposed model, named SAFIM (semi-analytical floating iceberg model) accounts for ... |
author2 |
Institut de Physique du Globe de Paris (IPGP (UMR_7154)) Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM) Conservatoire National des Arts et Métiers CNAM (CNAM) HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM) Centre des Matériaux (CDM) Mines Paris - PSL (École nationale supérieure des mines de Paris) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA) École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) |
format |
Conference Object |
author |
Bonnet, Pauline Yastrebov, V, A Mangeney, A. Castelnau, Olivier Queutey, P. Leroyer, Alban Sergeant, A. Stutzmann, E. Montagner, J-P |
author_facet |
Bonnet, Pauline Yastrebov, V, A Mangeney, A. Castelnau, Olivier Queutey, P. Leroyer, Alban Sergeant, A. Stutzmann, E. Montagner, J-P |
author_sort |
Bonnet, Pauline |
title |
Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
title_short |
Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
title_full |
Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
title_fullStr |
Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
title_full_unstemmed |
Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
title_sort |
estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02571877 https://hal.science/hal-02571877/document https://hal.science/hal-02571877/file/PaulineBonnet_Article_CFM_2019.pdf |
op_coverage |
Brest, France |
genre |
glacier Greenland |
genre_facet |
glacier Greenland |
op_source |
24ème Congrès Français de Mécanique, CFM 2019 https://hal.science/hal-02571877 24ème Congrès Français de Mécanique, CFM 2019, Aug 2019, Brest, France |
op_relation |
hal-02571877 https://hal.science/hal-02571877 https://hal.science/hal-02571877/document https://hal.science/hal-02571877/file/PaulineBonnet_Article_CFM_2019.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1799480281538756608 |
spelling |
ftunivnantes:oai:HAL:hal-02571877v1 2024-05-19T07:40:42+00:00 Estimating volumes of capsizing iceberg : mechanical modeling of capsize constrained by seismic signals Estimation des volumes d'icebergs qui se retournent: modélisation mécanique et analyse de signaux sismiques Bonnet, Pauline Yastrebov, V, A Mangeney, A. Castelnau, Olivier Queutey, P. Leroyer, Alban Sergeant, A. Stutzmann, E. Montagner, J-P Institut de Physique du Globe de Paris (IPGP (UMR_7154)) Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM) Conservatoire National des Arts et Métiers CNAM (CNAM) HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM) Centre des Matériaux (CDM) Mines Paris - PSL (École nationale supérieure des mines de Paris) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA) École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Brest, France 2019-08-30 https://hal.science/hal-02571877 https://hal.science/hal-02571877/document https://hal.science/hal-02571877/file/PaulineBonnet_Article_CFM_2019.pdf fr fre HAL CCSD hal-02571877 https://hal.science/hal-02571877 https://hal.science/hal-02571877/document https://hal.science/hal-02571877/file/PaulineBonnet_Article_CFM_2019.pdf info:eu-repo/semantics/OpenAccess 24ème Congrès Français de Mécanique, CFM 2019 https://hal.science/hal-02571877 24ème Congrès Français de Mécanique, CFM 2019, Aug 2019, Brest, France [PHYS]Physics [physics] [SDU]Sciences of the Universe [physics] [SPI]Engineering Sciences [physics] info:eu-repo/semantics/conferenceObject Conference papers 2019 ftunivnantes 2024-04-25T00:36:16Z International audience One main concern in climate science is to reduce uncertainties on sea level predictions. In particular,these uncertainties depend on the quantification of the mass losses of polar ice caps including Greenlandice sheet. Iceberg calving at Greenland glaciers accounts for up to half of ice losses at glacier termini.Some icebergs detaching from Greenland glaciers have the height of the glacier and are thin so unstableand capsize exerting a force on the glacier front which generates a seismic wave recorded at stationsin Greenland and further away. These seismic signals have been recorded for the last twenty-five yearsby the permanent stations. The number of such events has increased and the spatial distribution hasevolved. What is the evolution of the volume of capsizing icebergs ?Field data on capsizing icebergs are lacking, except for seismic data. Indeed, the database of seismicsignals gives continuous information about iceberg capsize events: we aim to extract information fromthese data. The characteristics of seismic signals depend on the iceberg volume and the whole dynamicof the capsizing iceberg [2]. The global aim of this work is to calculate the volum of capsizing icebergs.To do this, we compare recorded seismic signals to synthetic seismic signals calculated using a modelof iceberg capsize. Therefore, we solve an inverse problem to obtain information on the dynamic of thecapsize and in particular an estimation of the volume of the iceberg.Iceberg capsize dynamics depends on complex phenomena: iceberg-water interactions, iceberg-glacierfriction, glacier-sea floor friction, elasto-viscoplastic deformation of ice. Solving directly fluid flow, solidmotion, and contact equations even in two dimensions is very costly and can hardly be used to generatecatalogs and to solve inverse problem. Therefore, a simplified mechanical model of a capsizing icebergin water has been developed based on few assumptions. The proposed model, named SAFIM (semi-analytical floating iceberg model) accounts for ... Conference Object glacier Greenland Université de Nantes: HAL-UNIV-NANTES |