Low-frequency earthquakes in the Mexican sweet spot

We use data from the Meso?America Subduction Experiment to detect and locate low?frequency earthquakes (LFEs) in the Mexican subduction zone. We use visually?identified templates to perform a network waveform correlation search that produced ~17,000 robustly detected LFEs that form 15 distinct famil...

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Autores:
Tipo de recurso:
Fecha de publicación:
2013
Institución:
Universidad del Rosario
Repositorio:
Repositorio EdocUR - U. Rosario
Idioma:
eng
OAI Identifier:
oai:repository.urosario.edu.co:10336/25932
Acceso en línea:
https://doi.org/10.1002/grl.50561
https://repository.urosario.edu.co/handle/10336/25932
Palabra clave:
Low?frequency
Earthquakes
Tremor
Slow?slip
Mexico
Subduction
Rights
License
Abierto (Texto Completo)
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oai_identifier_str oai:repository.urosario.edu.co:10336/25932
network_acronym_str EDOCUR2
network_name_str Repositorio EdocUR - U. Rosario
repository_id_str
spelling 3542c9df-73dc-4817-8c8c-d6efa3958f16-107fbd1be-d4d9-4bc6-a196-084f7481d81e-1ebb93617-20cb-482a-a58c-2ee35e147151-1054f3d2a-edcd-461c-8f3b-f7f4735f28a6-14326e1ed-1261-4572-b12f-79badf6e9e95-19cfe2e20-06b8-49e0-a65f-975ec3611747-154d3cf55-abf5-4c96-969b-892f39e5c062-12020-08-06T16:20:15Z2020-08-06T16:20:15Z2013-05-16We use data from the Meso?America Subduction Experiment to detect and locate low?frequency earthquakes (LFEs) in the Mexican subduction zone. We use visually?identified templates to perform a network waveform correlation search that produced ~17,000 robustly detected LFEs that form 15 distinct families. Stacking an LFE family's corresponding detections results in seismograms with high signal?to?noise ratios and clear P and S wave arrivals; we use these travel times to locate the sources. The resulting locations superpose a previously identified region of permanent non?volcanic tremor (NVT) activity. Husker et al. (2012) called this region a Sweet Spot, suggesting that the local conditions are adequate to continuously generate NVT. The LFE hypocenters have been located at a depth of 40–45?km in an area that is surrounding the upper slab?plate interface. We characterize their focal mechanisms by comparing their stacked seismograms to synthetic seismograms. This analysis reveals a common low?dipping focal mechanism.application/pdfhttps://doi.org/10.1002/grl.50561ISSN: 0094-8276ESSN: 1944-8007https://repository.urosario.edu.co/handle/10336/25932engJohn Wiley and Sons2666No. 112661Geophysical Research LettersVol. 40Geophysical Research Letters, ISSN: 0094-8276; ESSN: 1944-8007, Vol.40, No.11 (June, 2013); pp.2661-2666https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/grl.50561Abierto (Texto Completo)http://purl.org/coar/access_right/c_abf2Geophysical Research Lettersinstname:Universidad del Rosarioreponame:Repositorio Institucional EdocURLow?frequencyEarthquakesTremorSlow?slipMexicoSubductionLow-frequency earthquakes in the Mexican sweet spotTerremotos de baja frecuencia en el punto dulce mexicanoarticleArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501Frank, William B.Shapiro, Nikolaï M.Kostoglodov, VladimirHusker, Allen L.Campillo, MichelPayero, Juan S.Prieto, Germán A.10336/25932oai:repository.urosario.edu.co:10336/259322022-05-02 07:37:21.728153https://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.co
dc.title.spa.fl_str_mv Low-frequency earthquakes in the Mexican sweet spot
dc.title.TranslatedTitle.spa.fl_str_mv Terremotos de baja frecuencia en el punto dulce mexicano
title Low-frequency earthquakes in the Mexican sweet spot
spellingShingle Low-frequency earthquakes in the Mexican sweet spot
Low?frequency
Earthquakes
Tremor
Slow?slip
Mexico
Subduction
title_short Low-frequency earthquakes in the Mexican sweet spot
title_full Low-frequency earthquakes in the Mexican sweet spot
title_fullStr Low-frequency earthquakes in the Mexican sweet spot
title_full_unstemmed Low-frequency earthquakes in the Mexican sweet spot
title_sort Low-frequency earthquakes in the Mexican sweet spot
dc.subject.keyword.spa.fl_str_mv Low?frequency
Earthquakes
Tremor
Slow?slip
Mexico
Subduction
topic Low?frequency
Earthquakes
Tremor
Slow?slip
Mexico
Subduction
description We use data from the Meso?America Subduction Experiment to detect and locate low?frequency earthquakes (LFEs) in the Mexican subduction zone. We use visually?identified templates to perform a network waveform correlation search that produced ~17,000 robustly detected LFEs that form 15 distinct families. Stacking an LFE family's corresponding detections results in seismograms with high signal?to?noise ratios and clear P and S wave arrivals; we use these travel times to locate the sources. The resulting locations superpose a previously identified region of permanent non?volcanic tremor (NVT) activity. Husker et al. (2012) called this region a Sweet Spot, suggesting that the local conditions are adequate to continuously generate NVT. The LFE hypocenters have been located at a depth of 40–45?km in an area that is surrounding the upper slab?plate interface. We characterize their focal mechanisms by comparing their stacked seismograms to synthetic seismograms. This analysis reveals a common low?dipping focal mechanism.
publishDate 2013
dc.date.created.spa.fl_str_mv 2013-05-16
dc.date.accessioned.none.fl_str_mv 2020-08-06T16:20:15Z
dc.date.available.none.fl_str_mv 2020-08-06T16:20:15Z
dc.type.eng.fl_str_mv article
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.spa.spa.fl_str_mv Artículo
dc.identifier.doi.none.fl_str_mv https://doi.org/10.1002/grl.50561
dc.identifier.issn.none.fl_str_mv ISSN: 0094-8276
ESSN: 1944-8007
dc.identifier.uri.none.fl_str_mv https://repository.urosario.edu.co/handle/10336/25932
url https://doi.org/10.1002/grl.50561
https://repository.urosario.edu.co/handle/10336/25932
identifier_str_mv ISSN: 0094-8276
ESSN: 1944-8007
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.citationEndPage.none.fl_str_mv 2666
dc.relation.citationIssue.none.fl_str_mv No. 11
dc.relation.citationStartPage.none.fl_str_mv 2661
dc.relation.citationTitle.none.fl_str_mv Geophysical Research Letters
dc.relation.citationVolume.none.fl_str_mv Vol. 40
dc.relation.ispartof.spa.fl_str_mv Geophysical Research Letters, ISSN: 0094-8276; ESSN: 1944-8007, Vol.40, No.11 (June, 2013); pp.2661-2666
dc.relation.uri.spa.fl_str_mv https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/grl.50561
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.acceso.spa.fl_str_mv Abierto (Texto Completo)
rights_invalid_str_mv Abierto (Texto Completo)
http://purl.org/coar/access_right/c_abf2
dc.format.mimetype.none.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv John Wiley and Sons
dc.source.spa.fl_str_mv Geophysical Research Letters
institution Universidad del Rosario
dc.source.instname.none.fl_str_mv instname:Universidad del Rosario
dc.source.reponame.none.fl_str_mv reponame:Repositorio Institucional EdocUR
repository.name.fl_str_mv Repositorio institucional EdocUR
repository.mail.fl_str_mv edocur@urosario.edu.co
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