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Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries

The spatial analysis of horizontal stress orientation is important to study stress sources and understand tectonics and the deformation of the lithosphere. Additional to the stress sources, the geometry of stress fields depends on the underlying coordinate reference system, which causes spatial dist...

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Autores principales: Stephan, Tobias, Enkelmann, Eva, Kroner, Uwe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10511519/
https://www.ncbi.nlm.nih.gov/pubmed/37730752
http://dx.doi.org/10.1038/s41598-023-42433-2
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author Stephan, Tobias
Enkelmann, Eva
Kroner, Uwe
author_facet Stephan, Tobias
Enkelmann, Eva
Kroner, Uwe
author_sort Stephan, Tobias
collection PubMed
description The spatial analysis of horizontal stress orientation is important to study stress sources and understand tectonics and the deformation of the lithosphere. Additional to the stress sources, the geometry of stress fields depends on the underlying coordinate reference system, which causes spatial distortions that bias the analysis and interpretation of stresses. The bias can be avoided when the stress field is decomposed and transformed into the reference frame of its first-order stress source. We present a modified and extended theory based on the empirical link between the orientation of first-order stresses and the trajectories of lateral plate boundary forces. This link is applied to analyze the orientation of horizontal stresses, their patterns, and tectonic structures from the perspective of their first-order source or cause. By using only parameters for the relative motion between two neighboring plates, we model the first-order orientation of the maximum horizontal stress that statistically fits the orientation of [Formula: see text] 80% of the global stress data adjacent to plate boundaries. Considerable deviations of the observed stress from the predicted first-order stress direction can reveal the geometry of second-order stresses and confine areas where other stress sources dominate. The model’s simple assumptions, independence from the sample size, potential application to regional to global scale analysis, and compatibility with other spatial interpolation algorithms make it a powerful method for analyzing stress fields. For immediate use, the presented method is implemented in the free and open-source software package tectonicr, which is written in the computer language R.
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spelling pubmed-105115192023-09-22 Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries Stephan, Tobias Enkelmann, Eva Kroner, Uwe Sci Rep Article The spatial analysis of horizontal stress orientation is important to study stress sources and understand tectonics and the deformation of the lithosphere. Additional to the stress sources, the geometry of stress fields depends on the underlying coordinate reference system, which causes spatial distortions that bias the analysis and interpretation of stresses. The bias can be avoided when the stress field is decomposed and transformed into the reference frame of its first-order stress source. We present a modified and extended theory based on the empirical link between the orientation of first-order stresses and the trajectories of lateral plate boundary forces. This link is applied to analyze the orientation of horizontal stresses, their patterns, and tectonic structures from the perspective of their first-order source or cause. By using only parameters for the relative motion between two neighboring plates, we model the first-order orientation of the maximum horizontal stress that statistically fits the orientation of [Formula: see text] 80% of the global stress data adjacent to plate boundaries. Considerable deviations of the observed stress from the predicted first-order stress direction can reveal the geometry of second-order stresses and confine areas where other stress sources dominate. The model’s simple assumptions, independence from the sample size, potential application to regional to global scale analysis, and compatibility with other spatial interpolation algorithms make it a powerful method for analyzing stress fields. For immediate use, the presented method is implemented in the free and open-source software package tectonicr, which is written in the computer language R. Nature Publishing Group UK 2023-09-20 /pmc/articles/PMC10511519/ /pubmed/37730752 http://dx.doi.org/10.1038/s41598-023-42433-2 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Stephan, Tobias
Enkelmann, Eva
Kroner, Uwe
Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
title Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
title_full Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
title_fullStr Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
title_full_unstemmed Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
title_short Analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
title_sort analyzing the horizontal orientation of the crustal stress adjacent to plate boundaries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10511519/
https://www.ncbi.nlm.nih.gov/pubmed/37730752
http://dx.doi.org/10.1038/s41598-023-42433-2
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