Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring
International audience Abstract. In the perspective of an upcoming seasonally ice-free Arctic, understanding the dynamics of sea ice in the changing climate is a major challenge in oceanography and climatology. In particular, the new generation of sea ice models will require fine parameterization of...
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Online Access: | https://hal.science/hal-04247520 https://hal.science/hal-04247520/document https://hal.science/hal-04247520/file/tc-17-1327-2023.pdf https://doi.org/10.5194/tc-17-1327-2023 |
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ftinsu:oai:HAL:hal-04247520v1 2024-04-28T08:11:38+00:00 Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring Moreau, Ludovic Seydoux, Léonard Weiss, Jérôme Campillo, Michel Institut des Sciences de la Terre (ISTerre) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA) 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) 2023 https://hal.science/hal-04247520 https://hal.science/hal-04247520/document https://hal.science/hal-04247520/file/tc-17-1327-2023.pdf https://doi.org/10.5194/tc-17-1327-2023 en eng HAL CCSD Copernicus info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-17-1327-2023 hal-04247520 https://hal.science/hal-04247520 https://hal.science/hal-04247520/document https://hal.science/hal-04247520/file/tc-17-1327-2023.pdf doi:10.5194/tc-17-1327-2023 info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-04247520 The Cryosphere, 2023, 17 (3), pp.1327-1341. ⟨10.5194/tc-17-1327-2023⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftinsu https://doi.org/10.5194/tc-17-1327-2023 2024-04-05T00:28:17Z International audience Abstract. In the perspective of an upcoming seasonally ice-free Arctic, understanding the dynamics of sea ice in the changing climate is a major challenge in oceanography and climatology. In particular, the new generation of sea ice models will require fine parameterization of sea ice thickness and rheology. With the rapidly evolving state of sea ice, achieving better accuracy, as well as finer temporal and spatial resolutions of its thickness, will set new monitoring standards, with major scientific and geopolitical implications. Recent studies have shown the potential of passive seismology to monitor the thickness, density and elastic properties of sea ice with significantly reduced logistical constraints. For example, human intervention is no longer required, except to install and uninstall the geophones. Building on this approach, we introduce a methodology for estimating sea ice thickness with high spatial and temporal resolutions from the analysis of icequake waveforms. This methodology is based on a deep convolutional neural network for automatic clustering of the ambient seismicity recorded on sea ice, combined with a Bayesian inversion of the clustered waveforms. By applying this approach to seismic data recorded in March 2019 on fast ice in the Van Mijen Fjord (Svalbard), we observe the spatial clustering of icequake sources along the shoreline of the fjord. The ice thickness is shown to follow an increasing trend that is consistent with the evolution of temperatures during the 4 weeks of data recording. Comparing the energy of the icequakes with that of artificial seismic sources, we were able to derive a power law of icequake energy and to relate this energy to the size of the cracks that generate the icequakes. Article in Journal/Newspaper Arctic Sea ice Svalbard The Cryosphere Institut national des sciences de l'Univers: HAL-INSU The Cryosphere 17 3 1327 1341 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Moreau, Ludovic Seydoux, Léonard Weiss, Jérôme Campillo, Michel Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Abstract. In the perspective of an upcoming seasonally ice-free Arctic, understanding the dynamics of sea ice in the changing climate is a major challenge in oceanography and climatology. In particular, the new generation of sea ice models will require fine parameterization of sea ice thickness and rheology. With the rapidly evolving state of sea ice, achieving better accuracy, as well as finer temporal and spatial resolutions of its thickness, will set new monitoring standards, with major scientific and geopolitical implications. Recent studies have shown the potential of passive seismology to monitor the thickness, density and elastic properties of sea ice with significantly reduced logistical constraints. For example, human intervention is no longer required, except to install and uninstall the geophones. Building on this approach, we introduce a methodology for estimating sea ice thickness with high spatial and temporal resolutions from the analysis of icequake waveforms. This methodology is based on a deep convolutional neural network for automatic clustering of the ambient seismicity recorded on sea ice, combined with a Bayesian inversion of the clustered waveforms. By applying this approach to seismic data recorded in March 2019 on fast ice in the Van Mijen Fjord (Svalbard), we observe the spatial clustering of icequake sources along the shoreline of the fjord. The ice thickness is shown to follow an increasing trend that is consistent with the evolution of temperatures during the 4 weeks of data recording. Comparing the energy of the icequakes with that of artificial seismic sources, we were able to derive a power law of icequake energy and to relate this energy to the size of the cracks that generate the icequakes. |
author2 |
Institut des Sciences de la Terre (ISTerre) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA) 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) |
format |
Article in Journal/Newspaper |
author |
Moreau, Ludovic Seydoux, Léonard Weiss, Jérôme Campillo, Michel |
author_facet |
Moreau, Ludovic Seydoux, Léonard Weiss, Jérôme Campillo, Michel |
author_sort |
Moreau, Ludovic |
title |
Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring |
title_short |
Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring |
title_full |
Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring |
title_fullStr |
Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring |
title_full_unstemmed |
Analysis of microseismicity in sea ice with deep learning and Bayesian inference: application to high-resolution thickness monitoring |
title_sort |
analysis of microseismicity in sea ice with deep learning and bayesian inference: application to high-resolution thickness monitoring |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04247520 https://hal.science/hal-04247520/document https://hal.science/hal-04247520/file/tc-17-1327-2023.pdf https://doi.org/10.5194/tc-17-1327-2023 |
genre |
Arctic Sea ice Svalbard The Cryosphere |
genre_facet |
Arctic Sea ice Svalbard The Cryosphere |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-04247520 The Cryosphere, 2023, 17 (3), pp.1327-1341. ⟨10.5194/tc-17-1327-2023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-17-1327-2023 hal-04247520 https://hal.science/hal-04247520 https://hal.science/hal-04247520/document https://hal.science/hal-04247520/file/tc-17-1327-2023.pdf doi:10.5194/tc-17-1327-2023 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/tc-17-1327-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
3 |
container_start_page |
1327 |
op_container_end_page |
1341 |
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1797578956102172672 |