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Global variation of seismic energy release with oceanic lithosphere age

Variations in Mid Ocean Ridge seismicity with age provide a new tool to understand the thermal evolution of the oceanic lithosphere. The sum of seismic energy released by earthquakes during a time, and for an area, is proportional to its lithospheric age. Asthenospheric temperatures emerge on ridge...

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Autores principales: Pinzón, Nicolás, Vargas, Carlos A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7804270/
https://www.ncbi.nlm.nih.gov/pubmed/33436927
http://dx.doi.org/10.1038/s41598-020-80475-y
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author Pinzón, Nicolás
Vargas, Carlos A.
author_facet Pinzón, Nicolás
Vargas, Carlos A.
author_sort Pinzón, Nicolás
collection PubMed
description Variations in Mid Ocean Ridge seismicity with age provide a new tool to understand the thermal evolution of the oceanic lithosphere. The sum of seismic energy released by earthquakes during a time, and for an area, is proportional to its lithospheric age. Asthenospheric temperatures emerge on ridge centers with new crust resulting in high seismic activity; thus, the energy released sum is highest on the young lithosphere and decreases with age. We propose a general model that relates the systematic variation of seismic energy released with the lithospheric age. Our analysis evaluates the main physical factors involved in the changes of energy released sum with the oceanic lithosphere age in MOR systems of different spreading rates. These observations are substantiated based on three cross-sections of the East Pacific Rise, six sections in the Mid Atlantic Ridge, and three profiles in the Central Indian Ridge. Our global model provides an additional tool for understanding tectonic processes, including the effects of seismicity and mid-plate volcanism, and a better understanding of the thermal evolution for the young oceanic lithosphere.
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spelling pubmed-78042702021-01-13 Global variation of seismic energy release with oceanic lithosphere age Pinzón, Nicolás Vargas, Carlos A. Sci Rep Article Variations in Mid Ocean Ridge seismicity with age provide a new tool to understand the thermal evolution of the oceanic lithosphere. The sum of seismic energy released by earthquakes during a time, and for an area, is proportional to its lithospheric age. Asthenospheric temperatures emerge on ridge centers with new crust resulting in high seismic activity; thus, the energy released sum is highest on the young lithosphere and decreases with age. We propose a general model that relates the systematic variation of seismic energy released with the lithospheric age. Our analysis evaluates the main physical factors involved in the changes of energy released sum with the oceanic lithosphere age in MOR systems of different spreading rates. These observations are substantiated based on three cross-sections of the East Pacific Rise, six sections in the Mid Atlantic Ridge, and three profiles in the Central Indian Ridge. Our global model provides an additional tool for understanding tectonic processes, including the effects of seismicity and mid-plate volcanism, and a better understanding of the thermal evolution for the young oceanic lithosphere. Nature Publishing Group UK 2021-01-12 /pmc/articles/PMC7804270/ /pubmed/33436927 http://dx.doi.org/10.1038/s41598-020-80475-y Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Pinzón, Nicolás
Vargas, Carlos A.
Global variation of seismic energy release with oceanic lithosphere age
title Global variation of seismic energy release with oceanic lithosphere age
title_full Global variation of seismic energy release with oceanic lithosphere age
title_fullStr Global variation of seismic energy release with oceanic lithosphere age
title_full_unstemmed Global variation of seismic energy release with oceanic lithosphere age
title_short Global variation of seismic energy release with oceanic lithosphere age
title_sort global variation of seismic energy release with oceanic lithosphere age
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7804270/
https://www.ncbi.nlm.nih.gov/pubmed/33436927
http://dx.doi.org/10.1038/s41598-020-80475-y
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