Global scale analysis and modeling of primary microseisms
International audience Primary microseism is the less studied seismic background vibration of the Earth. Evidence points to sources caused by ocean gravity waves coupling with the seafloor topography. As a result, these sources should be in water depth smaller than the wavelength of ocean waves. Usi...
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ftanrparis:oai:HAL:hal-02406006v1 2024-05-19T07:45:05+00:00 Global scale analysis and modeling of primary microseisms Gualtieri, L. Stutzmann, E. Juretzek, C Hadziioannou, C Ardhuin, Fabrice 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 d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-14-CE01-0012,MIMOSA,Analyse, modélisation et utilisation du bruit sismique large bande: des microséismes aux oscillations libres de la terre(2014) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) 2019 https://hal.science/hal-02406006 https://hal.science/hal-02406006/document https://hal.science/hal-02406006/file/Gualtieri_etal_GJI2019.pdf https://doi.org/10.1093/gji/ggz161/5421624 en eng HAL CCSD Oxford University Press (OUP) info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggz161/5421624 hal-02406006 https://hal.science/hal-02406006 https://hal.science/hal-02406006/document https://hal.science/hal-02406006/file/Gualtieri_etal_GJI2019.pdf doi:10.1093/gji/ggz161/5421624 info:eu-repo/semantics/OpenAccess ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://hal.science/hal-02406006 Geophysical Journal International, 2019, 218, pp.560-572. ⟨10.1093/gji/ggz161/5421624⟩ https://doi.org/10.1093/gji/ggz161 Seismic noise Numerical modeling Computational seismology Theoretical Seis- mology [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2019 ftanrparis https://doi.org/10.1093/gji/ggz161/542162410.1093/gji/ggz161 2024-04-23T03:15:47Z International audience Primary microseism is the less studied seismic background vibration of the Earth. Evidence points to sources caused by ocean gravity waves coupling with the seafloor topography. As a result, these sources should be in water depth smaller than the wavelength of ocean waves. Using a state-of-the-art ocean wave model, we carry out the first global-scale seismic modeling of the vertical-component power spectral density of primary mi-croseisms. Our modeling allows us to infer that the observed weak seasonality of primary microseisms in the southern hemisphere corresponds to a weak local seasonality of the sources. Moreover, a systematic analysis of the source regions that mostly contribute to each station reveals that stations on both the East and West sides of the North Atlantic Ocean are sensitive to frequency-dependent source regions. At low frequency (i.e., 0.05 Hz), the dominant source regions can be located thousands of kilometers away from the stations. This observation suggests that identifying the source regions of primary micro-seisms as the closest coasts can be misleading. Article in Journal/Newspaper North Atlantic Portail HAL-ANR (Agence Nationale de la Recherche) |
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Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
Seismic noise Numerical modeling Computational seismology Theoretical Seis- mology [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
Seismic noise Numerical modeling Computational seismology Theoretical Seis- mology [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Gualtieri, L. Stutzmann, E. Juretzek, C Hadziioannou, C Ardhuin, Fabrice Global scale analysis and modeling of primary microseisms |
topic_facet |
Seismic noise Numerical modeling Computational seismology Theoretical Seis- mology [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Primary microseism is the less studied seismic background vibration of the Earth. Evidence points to sources caused by ocean gravity waves coupling with the seafloor topography. As a result, these sources should be in water depth smaller than the wavelength of ocean waves. Using a state-of-the-art ocean wave model, we carry out the first global-scale seismic modeling of the vertical-component power spectral density of primary mi-croseisms. Our modeling allows us to infer that the observed weak seasonality of primary microseisms in the southern hemisphere corresponds to a weak local seasonality of the sources. Moreover, a systematic analysis of the source regions that mostly contribute to each station reveals that stations on both the East and West sides of the North Atlantic Ocean are sensitive to frequency-dependent source regions. At low frequency (i.e., 0.05 Hz), the dominant source regions can be located thousands of kilometers away from the stations. This observation suggests that identifying the source regions of primary micro-seisms as the closest coasts can be misleading. |
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 d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) ANR-14-CE01-0012,MIMOSA,Analyse, modélisation et utilisation du bruit sismique large bande: des microséismes aux oscillations libres de la terre(2014) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) |
format |
Article in Journal/Newspaper |
author |
Gualtieri, L. Stutzmann, E. Juretzek, C Hadziioannou, C Ardhuin, Fabrice |
author_facet |
Gualtieri, L. Stutzmann, E. Juretzek, C Hadziioannou, C Ardhuin, Fabrice |
author_sort |
Gualtieri, L. |
title |
Global scale analysis and modeling of primary microseisms |
title_short |
Global scale analysis and modeling of primary microseisms |
title_full |
Global scale analysis and modeling of primary microseisms |
title_fullStr |
Global scale analysis and modeling of primary microseisms |
title_full_unstemmed |
Global scale analysis and modeling of primary microseisms |
title_sort |
global scale analysis and modeling of primary microseisms |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02406006 https://hal.science/hal-02406006/document https://hal.science/hal-02406006/file/Gualtieri_etal_GJI2019.pdf https://doi.org/10.1093/gji/ggz161/5421624 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0956-540X EISSN: 1365-246X Geophysical Journal International https://hal.science/hal-02406006 Geophysical Journal International, 2019, 218, pp.560-572. ⟨10.1093/gji/ggz161/5421624⟩ https://doi.org/10.1093/gji/ggz161 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggz161/5421624 hal-02406006 https://hal.science/hal-02406006 https://hal.science/hal-02406006/document https://hal.science/hal-02406006/file/Gualtieri_etal_GJI2019.pdf doi:10.1093/gji/ggz161/5421624 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/gji/ggz161/542162410.1093/gji/ggz161 |
_version_ |
1799485032919728128 |