Attenuation tomography of the western United States from ambient seismic noise

We show that the spatial coherency of the ambient seismic field can be used for attenuation tomography in the western United States. We evaluate the real portion of the spatial coherency with an elastic geometric spreading term (a Bessel function) and a distance dependent decay (an attenuation coeff...

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Detalles Bibliográficos
Autores: Lawrence, Jesse F., Prieto, Germán A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:Colombia
Institución:Universidad del Rosario
Repositorio:Repositorio EdocUR - U. Rosario
Idioma:inglés
OAI Identifier:oai:repository.urosario.edu.co:10336/27266
Acceso en línea:https://doi.org/10.1029/2010JB007836
https://repository.urosario.edu.co/handle/10336/27266
Access Level:acceso abierto
Palabra clave:Seismic attenuation
Ambient seismic field
Tomography
Cust
Basin
Scattering
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spelling Attenuation tomography of the western United States from ambient seismic noiseTomografía de atenuación del oeste de Estados Unidos por ruido sísmico ambientalLawrence, Jesse F.Prieto, Germán A.Seismic attenuationAmbient seismic fieldTomographyCustBasinScatteringWe show that the spatial coherency of the ambient seismic field can be used for attenuation tomography in the western United States. We evaluate the real portion of the spatial coherency with an elastic geometric spreading term (a Bessel function) and a distance dependent decay (an attenuation coefficient). In order to invert the spatial coherency, a weight stack inversion technique is applied. We recover phase velocity and attenuation coefficient maps at periods of 8–32s, which correspond to the elastic and anelastic structure at crustal and upper mantle depths. The phase velocity maps obtained by this method are of similar resolution to more standard two?station methods. The attenuation results provide an important complement to the information extracted from earthquake?based tomography. Several geological features are easily identifiable in the attenuation coefficient maps, such as the highly attenuating sedimentary basins along the West Coast of the United States, and the highly attenuating Yellowstone region, and the boundaries of the Snake River Plains.American Geophysical UnionJohn Wiley & Sons2011-06-152020-08-19T14:41:32Zinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.1029/2010JB007836ISSN: 2169-9313EISSN: 2169-9356https://repository.urosario.edu.co/handle/10336/27266Journal of Geophysical Research: Solid Earthreponame:Repositorio EdocUR - U. Rosarioinstname:Universidad del Rosarioinstacron:Universidad del Rosarioenghttps://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2010JB007836info:eu-repo/semantics/openAccess2021-06-03T00:50:08Z
dc.title.none.fl_str_mv Attenuation tomography of the western United States from ambient seismic noise
Tomografía de atenuación del oeste de Estados Unidos por ruido sísmico ambiental
title Attenuation tomography of the western United States from ambient seismic noise
spellingShingle Attenuation tomography of the western United States from ambient seismic noise
Lawrence, Jesse F.
Seismic attenuation
Ambient seismic field
Tomography
Cust
Basin
Scattering
title_short Attenuation tomography of the western United States from ambient seismic noise
title_full Attenuation tomography of the western United States from ambient seismic noise
title_fullStr Attenuation tomography of the western United States from ambient seismic noise
title_full_unstemmed Attenuation tomography of the western United States from ambient seismic noise
title_sort Attenuation tomography of the western United States from ambient seismic noise
dc.creator.none.fl_str_mv Lawrence, Jesse F.
Prieto, Germán A.
author Lawrence, Jesse F.
author_facet Lawrence, Jesse F.
Prieto, Germán A.
author_role author
author2 Prieto, Germán A.
author2_role author
dc.subject.none.fl_str_mv Seismic attenuation
Ambient seismic field
Tomography
Cust
Basin
Scattering
topic Seismic attenuation
Ambient seismic field
Tomography
Cust
Basin
Scattering
description We show that the spatial coherency of the ambient seismic field can be used for attenuation tomography in the western United States. We evaluate the real portion of the spatial coherency with an elastic geometric spreading term (a Bessel function) and a distance dependent decay (an attenuation coefficient). In order to invert the spatial coherency, a weight stack inversion technique is applied. We recover phase velocity and attenuation coefficient maps at periods of 8–32s, which correspond to the elastic and anelastic structure at crustal and upper mantle depths. The phase velocity maps obtained by this method are of similar resolution to more standard two?station methods. The attenuation results provide an important complement to the information extracted from earthquake?based tomography. Several geological features are easily identifiable in the attenuation coefficient maps, such as the highly attenuating sedimentary basins along the West Coast of the United States, and the highly attenuating Yellowstone region, and the boundaries of the Snake River Plains.
publishDate 2011
dc.date.none.fl_str_mv 2011-06-15
2020-08-19T14:41:32Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1029/2010JB007836
ISSN: 2169-9313
EISSN: 2169-9356
https://repository.urosario.edu.co/handle/10336/27266
url https://doi.org/10.1029/2010JB007836
https://repository.urosario.edu.co/handle/10336/27266
identifier_str_mv ISSN: 2169-9313
EISSN: 2169-9356
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2010JB007836
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
John Wiley & Sons
publisher.none.fl_str_mv American Geophysical Union
John Wiley & Sons
dc.source.none.fl_str_mv Journal of Geophysical Research: Solid Earth
reponame:Repositorio EdocUR - U. Rosario
instname:Universidad del Rosario
instacron:Universidad del Rosario
instname_str Universidad del Rosario
instacron_str Universidad del Rosario
institution Universidad del Rosario
reponame_str Repositorio EdocUR - U. Rosario
collection Repositorio EdocUR - U. Rosario
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score 15,81155

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