Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake

Stress may induce apparent resistivity changes. Clarifying the deformation process of the source media is critical for determining the correlations between resistivity variations and earthquake occurrence. In this study, the stress state of a medium was analyzed by integrating GPS measurements, the...

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Autores principales:	Yali Wang, Chen Yu, Huaizhong Yu, Chong Yue, Donghui Jia, Yuchuan Ma, Zhiguang Zhang, Wen Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	apparent resistivity stress 2020 Mw 6.0 Jiashi earthquake Atushi–Kalpin Thrust Zone Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/77930f5f297d48d4ac09863537e22ea2
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id	oai:doaj.org-article:77930f5f297d48d4ac09863537e22ea2
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spelling	oai:doaj.org-article:77930f5f297d48d4ac09863537e22ea22021-11-25T16:44:28ZStress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake10.3390/atmos121114202073-4433https://doaj.org/article/77930f5f297d48d4ac09863537e22ea22021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1420https://doaj.org/toc/2073-4433Stress may induce apparent resistivity changes. Clarifying the deformation process of the source media is critical for determining the correlations between resistivity variations and earthquake occurrence. In this study, the stress state of a medium was analyzed by integrating GPS measurements, the spatiotemporal evolution of the load/unload response ratio (LURR), geochemical monitoring, and synchronous apparent resistivity changes preceding the 2020 Mw 6.0 Jiashi earthquake. The medium hosting the Kalpin Observatory underwent elastic deformation before 2019, and the synchronous decreases in the E–W and N–S apparent resistivities from 2015 can be attributed to N–S-dominated compressive stress. The microdamage stage occurred in 2019, with subsequent E–W apparent resistivity variation amplitudes that were ~0.4 Ωm higher than those in previous years. This difference is a result of microdamage to the medium owing to tensile stress during the seismogenic process. The spatiotemporal evolution of the LURR and gas seepage monitoring data also indicate that the medium was damaged prior to the earthquake. Variations in the apparent resistivity measured at the Kalpin Observatory indicate that the medium underwent elastic deformation, followed by microdamage, until stress triggered the earthquake.Yali WangChen YuHuaizhong YuChong YueDonghui JiaYuchuan MaZhiguang ZhangWen YangMDPI AGarticleapparent resistivitystress2020 Mw 6.0 Jiashi earthquakeAtushi–Kalpin Thrust ZoneMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1420, p 1420 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	apparent resistivity stress 2020 Mw 6.0 Jiashi earthquake Atushi–Kalpin Thrust Zone Meteorology. Climatology QC851-999
spellingShingle	apparent resistivity stress 2020 Mw 6.0 Jiashi earthquake Atushi–Kalpin Thrust Zone Meteorology. Climatology QC851-999 Yali Wang Chen Yu Huaizhong Yu Chong Yue Donghui Jia Yuchuan Ma Zhiguang Zhang Wen Yang Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake
description	Stress may induce apparent resistivity changes. Clarifying the deformation process of the source media is critical for determining the correlations between resistivity variations and earthquake occurrence. In this study, the stress state of a medium was analyzed by integrating GPS measurements, the spatiotemporal evolution of the load/unload response ratio (LURR), geochemical monitoring, and synchronous apparent resistivity changes preceding the 2020 Mw 6.0 Jiashi earthquake. The medium hosting the Kalpin Observatory underwent elastic deformation before 2019, and the synchronous decreases in the E–W and N–S apparent resistivities from 2015 can be attributed to N–S-dominated compressive stress. The microdamage stage occurred in 2019, with subsequent E–W apparent resistivity variation amplitudes that were ~0.4 Ωm higher than those in previous years. This difference is a result of microdamage to the medium owing to tensile stress during the seismogenic process. The spatiotemporal evolution of the LURR and gas seepage monitoring data also indicate that the medium was damaged prior to the earthquake. Variations in the apparent resistivity measured at the Kalpin Observatory indicate that the medium underwent elastic deformation, followed by microdamage, until stress triggered the earthquake.
format	article
author	Yali Wang Chen Yu Huaizhong Yu Chong Yue Donghui Jia Yuchuan Ma Zhiguang Zhang Wen Yang
author_facet	Yali Wang Chen Yu Huaizhong Yu Chong Yue Donghui Jia Yuchuan Ma Zhiguang Zhang Wen Yang
author_sort	Yali Wang
title	Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake
title_short	Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake
title_full	Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake
title_fullStr	Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake
title_full_unstemmed	Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake
title_sort	stress-induced apparent resistivity variations at the kalpin observatory and the correlation with the 2020 mw 6.0 jiashi earthquake
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/77930f5f297d48d4ac09863537e22ea2
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Stress-Induced Apparent Resistivity Variations at the Kalpin Observatory and the Correlation with the 2020 Mw 6.0 Jiashi Earthquake

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