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Do slow slip events trigger large and great megathrust earthquakes?

Slow slip events have been suggested to trigger subduction earthquakes. However, examples to date have been poorly recorded, occurring offshore, where data are sparse. Better understanding of slow slip events and their influence on subsequent earthquakes is critical for hazard forecasts. We analyze...

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Detalles Bibliográficos
Autores principales: Voss, N., Dixon, T. H., Liu, Z., Malservisi, R., Protti, M., Schwartz, S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6209384/
https://www.ncbi.nlm.nih.gov/pubmed/30402540
http://dx.doi.org/10.1126/sciadv.aat8472
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author Voss, N.
Dixon, T. H.
Liu, Z.
Malservisi, R.
Protti, M.
Schwartz, S.
author_facet Voss, N.
Dixon, T. H.
Liu, Z.
Malservisi, R.
Protti, M.
Schwartz, S.
author_sort Voss, N.
collection PubMed
description Slow slip events have been suggested to trigger subduction earthquakes. However, examples to date have been poorly recorded, occurring offshore, where data are sparse. Better understanding of slow slip events and their influence on subsequent earthquakes is critical for hazard forecasts. We analyze a well-recorded event beginning 6 months before the 2012 M(w) (moment magnitude) 7.6 earthquake in Costa Rica. The event migrates to the eventual megathrust rupture. Peak slip rate reached a maximum of 5 mm/day, 43 days before the earthquake, remaining high until the earthquake. However, changes in Mohr-Coulomb failure stress at the hypocenter were small (0.1 bar). Our data contradict models of earthquake nucleation that involve power law acceleration of slip and foreshocks. Slow slip events may prove useful for short-term earthquake forecasts.
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spelling pubmed-62093842018-11-06 Do slow slip events trigger large and great megathrust earthquakes? Voss, N. Dixon, T. H. Liu, Z. Malservisi, R. Protti, M. Schwartz, S. Sci Adv Research Articles Slow slip events have been suggested to trigger subduction earthquakes. However, examples to date have been poorly recorded, occurring offshore, where data are sparse. Better understanding of slow slip events and their influence on subsequent earthquakes is critical for hazard forecasts. We analyze a well-recorded event beginning 6 months before the 2012 M(w) (moment magnitude) 7.6 earthquake in Costa Rica. The event migrates to the eventual megathrust rupture. Peak slip rate reached a maximum of 5 mm/day, 43 days before the earthquake, remaining high until the earthquake. However, changes in Mohr-Coulomb failure stress at the hypocenter were small (0.1 bar). Our data contradict models of earthquake nucleation that involve power law acceleration of slip and foreshocks. Slow slip events may prove useful for short-term earthquake forecasts. American Association for the Advancement of Science 2018-10-31 /pmc/articles/PMC6209384/ /pubmed/30402540 http://dx.doi.org/10.1126/sciadv.aat8472 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Voss, N.
Dixon, T. H.
Liu, Z.
Malservisi, R.
Protti, M.
Schwartz, S.
Do slow slip events trigger large and great megathrust earthquakes?
title Do slow slip events trigger large and great megathrust earthquakes?
title_full Do slow slip events trigger large and great megathrust earthquakes?
title_fullStr Do slow slip events trigger large and great megathrust earthquakes?
title_full_unstemmed Do slow slip events trigger large and great megathrust earthquakes?
title_short Do slow slip events trigger large and great megathrust earthquakes?
title_sort do slow slip events trigger large and great megathrust earthquakes?
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6209384/
https://www.ncbi.nlm.nih.gov/pubmed/30402540
http://dx.doi.org/10.1126/sciadv.aat8472
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