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Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China

In the past 2 years, three earthquakes of magnitude 6.0 and above occurred consecutively in Qinghai province, China, i.e., the 22 May 2021 M(s)7.4 Maduo, 8 January 2022 M(s)6.9 Menyuan, and 26 March 2022 M(s)6.0 Delingha earthquakes. The hydrological observation instruments set up by the China Earth...

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Autores principales: Yu, Huaizhong, Liu, Lei, Ma, Yuchuan, Yan, Rui, Liu, Jie, Ma, Yawei, Li, Zeping, Zhang, Xiaotao, Zhao, Jing, Yu, Chen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10238508/
https://www.ncbi.nlm.nih.gov/pubmed/37268702
http://dx.doi.org/10.1038/s41598-023-36274-2
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author Yu, Huaizhong
Liu, Lei
Ma, Yuchuan
Yan, Rui
Liu, Jie
Ma, Yawei
Li, Zeping
Zhang, Xiaotao
Zhao, Jing
Yu, Chen
author_facet Yu, Huaizhong
Liu, Lei
Ma, Yuchuan
Yan, Rui
Liu, Jie
Ma, Yawei
Li, Zeping
Zhang, Xiaotao
Zhao, Jing
Yu, Chen
author_sort Yu, Huaizhong
collection PubMed
description In the past 2 years, three earthquakes of magnitude 6.0 and above occurred consecutively in Qinghai province, China, i.e., the 22 May 2021 M(s)7.4 Maduo, 8 January 2022 M(s)6.9 Menyuan, and 26 March 2022 M(s)6.0 Delingha earthquakes. The hydrological observation instruments set up by the China Earthquake Administration allow us to study the dynamic processes in the well-aquifer systems during the establishment of criticality. Particularly, the observations played an important role in the prediction of the 8 January 2022 M(s)6.9 Menyuan earthquake that was approved by the People’s Government of Qinghai province. This work presents the hydrological data recorded by 7 stations to show the short-term anomalies before these earthquakes. To explore the performance of the hydrological observations in detecting earthquakes that occurred on different active tectonic blocks, we calculate the relative amplitudes of the pre-seismic changes. Results indicate that markedly pre-seismic change is found if the observation station and the detection earthquake are on the same block, and moderate change is found if they are on the adjacent blocks, while the precursor is hard to be identified if they are on the separated blocks. The variations in the hydrological responses may be caused by the strength weakening (or dilatancy) of source media. And the increased volumes in the crust can be evidenced by the changes in the geodetic time series in the same neighborhoods and during the same period, augmenting stress loading between the blocks.
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spelling pubmed-102385082023-06-04 Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China Yu, Huaizhong Liu, Lei Ma, Yuchuan Yan, Rui Liu, Jie Ma, Yawei Li, Zeping Zhang, Xiaotao Zhao, Jing Yu, Chen Sci Rep Article In the past 2 years, three earthquakes of magnitude 6.0 and above occurred consecutively in Qinghai province, China, i.e., the 22 May 2021 M(s)7.4 Maduo, 8 January 2022 M(s)6.9 Menyuan, and 26 March 2022 M(s)6.0 Delingha earthquakes. The hydrological observation instruments set up by the China Earthquake Administration allow us to study the dynamic processes in the well-aquifer systems during the establishment of criticality. Particularly, the observations played an important role in the prediction of the 8 January 2022 M(s)6.9 Menyuan earthquake that was approved by the People’s Government of Qinghai province. This work presents the hydrological data recorded by 7 stations to show the short-term anomalies before these earthquakes. To explore the performance of the hydrological observations in detecting earthquakes that occurred on different active tectonic blocks, we calculate the relative amplitudes of the pre-seismic changes. Results indicate that markedly pre-seismic change is found if the observation station and the detection earthquake are on the same block, and moderate change is found if they are on the adjacent blocks, while the precursor is hard to be identified if they are on the separated blocks. The variations in the hydrological responses may be caused by the strength weakening (or dilatancy) of source media. And the increased volumes in the crust can be evidenced by the changes in the geodetic time series in the same neighborhoods and during the same period, augmenting stress loading between the blocks. Nature Publishing Group UK 2023-06-02 /pmc/articles/PMC10238508/ /pubmed/37268702 http://dx.doi.org/10.1038/s41598-023-36274-2 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
Yu, Huaizhong
Liu, Lei
Ma, Yuchuan
Yan, Rui
Liu, Jie
Ma, Yawei
Li, Zeping
Zhang, Xiaotao
Zhao, Jing
Yu, Chen
Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China
title Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China
title_full Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China
title_fullStr Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China
title_full_unstemmed Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China
title_short Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai, China
title_sort observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in qinghai, china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10238508/
https://www.ncbi.nlm.nih.gov/pubmed/37268702
http://dx.doi.org/10.1038/s41598-023-36274-2
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