Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability
International audience Seismic noise spectra at all seismic stations display two peaks in the 1-20 s period band, called primary and secondary microseisms. They are caused by the coupling of ocean waves into Rayleigh waves. At most locations, microseismic power is greater during local winter (when n...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2011GL047525 https://hal.archives-ouvertes.fr/hal-00679388/file/2011GL047525-pip.pdf https://hal.archives-ouvertes.fr/hal-00679388 |
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fttriple:oai:gotriple.eu:10670/1.2o6w55 2023-05-15T13:49:35+02:00 Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore Géophysique expérimentale (IPGS) (IPGS-GE) 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)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Sismologie (IPGS) (IPGS-Sismologie) Institut de Physique du Globe de Paris (IPGP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) 2011-01-01 https://doi.org/10.1029/2011GL047525 https://hal.archives-ouvertes.fr/hal-00679388/file/2011GL047525-pip.pdf https://hal.archives-ouvertes.fr/hal-00679388 en eng HAL CCSD American Geophysical Union hal-00679388 doi:10.1029/2011GL047525 10670/1.2o6w55 https://hal.archives-ouvertes.fr/hal-00679388/file/2011GL047525-pip.pdf https://hal.archives-ouvertes.fr/hal-00679388 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 2011, 38, pp.L11302. ⟨10.1029/2011GL047525⟩ geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2011 fttriple https://doi.org/10.1029/2011GL047525 2023-01-22T18:23:07Z International audience Seismic noise spectra at all seismic stations display two peaks in the 1-20 s period band, called primary and secondary microseisms. They are caused by the coupling of ocean waves into Rayleigh waves. At most locations, microseismic power is greater during local winter (when nearby oceans are stormier) than local summer. This tendency is reversed for stations in Antarctica, where growth of local winter sea ice seems to impede microseism generation in near coastal areas. A decade of continuous data from coastal seismic stations in Antarctica show systematic seasonality in microseismic signal levels, and demonstrate associations with both broad‐ scale and local sea‐ice conditions. Primary microseisms are known to be generated at the coast and the modulation that we observe can be associated with sea‐ice variations both in the vicinity of the station and along other Antarctic coasts. The similar modulation of short‐period secondary microseisms corroborates their mostly near‐coastal origin, while the con- tinued presence of long‐period secondary microseisms sug- gests more distant source regions. These observations could be used to extend the monitoring of climate variability prior to the availability of satellite‐derived climate indicators. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Unknown Antarctic The Antarctic Geophysical Research Letters 38 11 n/a n/a |
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geo envir Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
topic_facet |
geo envir |
description |
International audience Seismic noise spectra at all seismic stations display two peaks in the 1-20 s period band, called primary and secondary microseisms. They are caused by the coupling of ocean waves into Rayleigh waves. At most locations, microseismic power is greater during local winter (when nearby oceans are stormier) than local summer. This tendency is reversed for stations in Antarctica, where growth of local winter sea ice seems to impede microseism generation in near coastal areas. A decade of continuous data from coastal seismic stations in Antarctica show systematic seasonality in microseismic signal levels, and demonstrate associations with both broad‐ scale and local sea‐ice conditions. Primary microseisms are known to be generated at the coast and the modulation that we observe can be associated with sea‐ice variations both in the vicinity of the station and along other Antarctic coasts. The similar modulation of short‐period secondary microseisms corroborates their mostly near‐coastal origin, while the con- tinued presence of long‐period secondary microseisms sug- gests more distant source regions. These observations could be used to extend the monitoring of climate variability prior to the availability of satellite‐derived climate indicators. |
author2 |
Géophysique expérimentale (IPGS) (IPGS-GE) 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)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Sismologie (IPGS) (IPGS-Sismologie) Institut de Physique du Globe de Paris (IPGP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore |
author_facet |
Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore |
author_sort |
Grob, Mélanie |
title |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_short |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_full |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_fullStr |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_full_unstemmed |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_sort |
observations of the seasonality of the antarctic microseismic signal, and its association to sea ice variability |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://doi.org/10.1029/2011GL047525 https://hal.archives-ouvertes.fr/hal-00679388/file/2011GL047525-pip.pdf https://hal.archives-ouvertes.fr/hal-00679388 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 2011, 38, pp.L11302. ⟨10.1029/2011GL047525⟩ |
op_relation |
hal-00679388 doi:10.1029/2011GL047525 10670/1.2o6w55 https://hal.archives-ouvertes.fr/hal-00679388/file/2011GL047525-pip.pdf https://hal.archives-ouvertes.fr/hal-00679388 |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2011GL047525 |
container_title |
Geophysical Research Letters |
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38 |
container_issue |
11 |
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n/a |
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n/a |
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1766251833856098304 |