Global climate imprint on seismic noise
International audience In the absence of earthquakes, oceanic microseisms are the strongest signals recorded by seismic stations. Using the GEOSCOPE global seismic network, we show that the secondary microseism spectra have global characteristics that depend on the station latitude and on the season...
Published in: | Geochemistry, Geophysics, Geosystems |
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Online Access: | https://hal.science/hal-00723544 https://hal.science/hal-00723544/document https://hal.science/hal-00723544/file/Stutzmann_et_al-2009-Geochemistry,_Geophysics,_Geosystems.pdf https://doi.org/10.1029/2009GC002619 |
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ftunivparis:oai:HAL:hal-00723544v1 2024-05-12T07:54:23+00:00 Global climate imprint on seismic noise Stutzmann, Eléonore Schimmel, Martin Patau, Geneviève Maggi, Alessia 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) Institute of Earth Sciences Jaume Almera Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC) Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2009 https://hal.science/hal-00723544 https://hal.science/hal-00723544/document https://hal.science/hal-00723544/file/Stutzmann_et_al-2009-Geochemistry,_Geophysics,_Geosystems.pdf https://doi.org/10.1029/2009GC002619 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GC002619 hal-00723544 https://hal.science/hal-00723544 https://hal.science/hal-00723544/document https://hal.science/hal-00723544/file/Stutzmann_et_al-2009-Geochemistry,_Geophysics,_Geosystems.pdf doi:10.1029/2009GC002619 info:eu-repo/semantics/OpenAccess ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-00723544 Geochemistry, Geophysics, Geosystems, 2009, 10 (11), pp.Q11004. ⟨10.1029/2009GC002619⟩ seismology microseisms seismic noise [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2009 ftunivparis https://doi.org/10.1029/2009GC002619 2024-04-16T03:11:40Z International audience In the absence of earthquakes, oceanic microseisms are the strongest signals recorded by seismic stations. Using the GEOSCOPE global seismic network, we show that the secondary microseism spectra have global characteristics that depend on the station latitude and on the season. In both hemispheres, noise amplitude is larger during local winter, and close to the equator, noise amplitude is stable over the year. There is an excellent correlation between microseism amplitude variations over the year and changes in the highest wave areas. Considering the polarization of the secondary microseisms, we show that stations in the Northern Hemisphere and close to the equator record significant changes of the secondary microseism source azimuth over the year. During Northern Hemisphere summer, part or all of the sources are systematically located farther toward the south than during winter. Stations in French Guyana (MPG) and in Algeria (TAM) record microseisms generated several thousand kilometers away in the South Pacific Ocean and in the Indian Ocean, respectively. Thus, secondary microseism sources generated by ocean waves which originate in the Southern Hemisphere can be recorded by Northern Hemisphere stations when local sources are weak. We also show, considering a station close to Antarctica, that primary and secondary microseism noise amplitudes are strongly affected by changes of the sea ice floe and that sources of these microseisms are in different areas. Microseism recording can therefore be used to monitor climate changes. Article in Journal/Newspaper Antarc* Antarctica Sea ice Université de Paris: Portail HAL Indian Pacific Geochemistry, Geophysics, Geosystems 10 11 n/a n/a |
institution |
Open Polar |
collection |
Université de Paris: Portail HAL |
op_collection_id |
ftunivparis |
language |
English |
topic |
seismology microseisms seismic noise [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
seismology microseisms seismic noise [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Stutzmann, Eléonore Schimmel, Martin Patau, Geneviève Maggi, Alessia Global climate imprint on seismic noise |
topic_facet |
seismology microseisms seismic noise [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience In the absence of earthquakes, oceanic microseisms are the strongest signals recorded by seismic stations. Using the GEOSCOPE global seismic network, we show that the secondary microseism spectra have global characteristics that depend on the station latitude and on the season. In both hemispheres, noise amplitude is larger during local winter, and close to the equator, noise amplitude is stable over the year. There is an excellent correlation between microseism amplitude variations over the year and changes in the highest wave areas. Considering the polarization of the secondary microseisms, we show that stations in the Northern Hemisphere and close to the equator record significant changes of the secondary microseism source azimuth over the year. During Northern Hemisphere summer, part or all of the sources are systematically located farther toward the south than during winter. Stations in French Guyana (MPG) and in Algeria (TAM) record microseisms generated several thousand kilometers away in the South Pacific Ocean and in the Indian Ocean, respectively. Thus, secondary microseism sources generated by ocean waves which originate in the Southern Hemisphere can be recorded by Northern Hemisphere stations when local sources are weak. We also show, considering a station close to Antarctica, that primary and secondary microseism noise amplitudes are strongly affected by changes of the sea ice floe and that sources of these microseisms are in different areas. Microseism recording can therefore be used to monitor climate 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) Institute of Earth Sciences Jaume Almera Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC) Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Stutzmann, Eléonore Schimmel, Martin Patau, Geneviève Maggi, Alessia |
author_facet |
Stutzmann, Eléonore Schimmel, Martin Patau, Geneviève Maggi, Alessia |
author_sort |
Stutzmann, Eléonore |
title |
Global climate imprint on seismic noise |
title_short |
Global climate imprint on seismic noise |
title_full |
Global climate imprint on seismic noise |
title_fullStr |
Global climate imprint on seismic noise |
title_full_unstemmed |
Global climate imprint on seismic noise |
title_sort |
global climate imprint on seismic noise |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00723544 https://hal.science/hal-00723544/document https://hal.science/hal-00723544/file/Stutzmann_et_al-2009-Geochemistry,_Geophysics,_Geosystems.pdf https://doi.org/10.1029/2009GC002619 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
Antarc* Antarctica Sea ice |
genre_facet |
Antarc* Antarctica Sea ice |
op_source |
ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-00723544 Geochemistry, Geophysics, Geosystems, 2009, 10 (11), pp.Q11004. ⟨10.1029/2009GC002619⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009GC002619 hal-00723544 https://hal.science/hal-00723544 https://hal.science/hal-00723544/document https://hal.science/hal-00723544/file/Stutzmann_et_al-2009-Geochemistry,_Geophysics,_Geosystems.pdf doi:10.1029/2009GC002619 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2009GC002619 |
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Geochemistry, Geophysics, Geosystems |
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10 |
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11 |
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