Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet

Groundwater is undoubtedly important for water security and eco-environmental protection, especially in areas that experience earthquakes. Analyzing the characteristics and variation of groundwater after an earthquake is significant to obtain a better understanding of the seismic risk and rational m...

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Autores principales:	Pengtao Yang, Xiaolong Sun, Dongying Liu, Zhongtai He, Yongsheng Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Biru M6.1 earthquake hydrochemical characteristics hydrogen and oxygen isotopes groundwater response Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/255a481d4c034e129bcd016ce46c78f1
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id	oai:doaj.org-article:255a481d4c034e129bcd016ce46c78f1
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spelling	oai:doaj.org-article:255a481d4c034e129bcd016ce46c78f12021-11-11T19:57:36ZHydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet10.3390/w132131112073-4441https://doaj.org/article/255a481d4c034e129bcd016ce46c78f12021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3111https://doaj.org/toc/2073-4441Groundwater is undoubtedly important for water security and eco-environmental protection, especially in areas that experience earthquakes. Analyzing the characteristics and variation of groundwater after an earthquake is significant to obtain a better understanding of the seismic risk and rational management of groundwater resources. This study investigated the hydrogeochemical characteristics of groundwater at the epicenter of the 2021 Biru M6.1 earthquake in central Tibet, southwest China, using 23 water samples. The results showed that: (1) the hydrochemical type, hydrogen and oxygen isotope ratios, and SiO<sub>2</sub> concentrations of three hot spring water samples in the study area were significantly different from those of samples taken elsewhere, indicating that the hot spring water originates from deeper geothermal reservoirs and has undergone more distant migration and longer fractionation processes; (2) the geochemical characteristics of groundwater from some sampling sites in the epicentral area were apparently distinct from those of other shallow groundwater or surface water samples, suggesting that the groundwater environment in the epicentral area has been affected by the earthquake. Along with the macroscopic groundwater responses in the epicentral area after the earthquake, we investigated the influencing mechanisms of the earthquake on the regional groundwater environment. We conclude that a shorter distance from the epicenter to the seismogenic fault leads to a greater possibility of the generation of new fractures, which then induce macroscopic responses and chemical characteristic variations for groundwater.Pengtao YangXiaolong SunDongying LiuZhongtai HeYongsheng LiMDPI AGarticleBiru M6.1 earthquakehydrochemical characteristicshydrogen and oxygen isotopesgroundwater responseHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3111, p 3111 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biru M6.1 earthquake hydrochemical characteristics hydrogen and oxygen isotopes groundwater response Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	Biru M6.1 earthquake hydrochemical characteristics hydrogen and oxygen isotopes groundwater response Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Pengtao Yang Xiaolong Sun Dongying Liu Zhongtai He Yongsheng Li Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
description	Groundwater is undoubtedly important for water security and eco-environmental protection, especially in areas that experience earthquakes. Analyzing the characteristics and variation of groundwater after an earthquake is significant to obtain a better understanding of the seismic risk and rational management of groundwater resources. This study investigated the hydrogeochemical characteristics of groundwater at the epicenter of the 2021 Biru M6.1 earthquake in central Tibet, southwest China, using 23 water samples. The results showed that: (1) the hydrochemical type, hydrogen and oxygen isotope ratios, and SiO<sub>2</sub> concentrations of three hot spring water samples in the study area were significantly different from those of samples taken elsewhere, indicating that the hot spring water originates from deeper geothermal reservoirs and has undergone more distant migration and longer fractionation processes; (2) the geochemical characteristics of groundwater from some sampling sites in the epicentral area were apparently distinct from those of other shallow groundwater or surface water samples, suggesting that the groundwater environment in the epicentral area has been affected by the earthquake. Along with the macroscopic groundwater responses in the epicentral area after the earthquake, we investigated the influencing mechanisms of the earthquake on the regional groundwater environment. We conclude that a shorter distance from the epicenter to the seismogenic fault leads to a greater possibility of the generation of new fractures, which then induce macroscopic responses and chemical characteristic variations for groundwater.
format	article
author	Pengtao Yang Xiaolong Sun Dongying Liu Zhongtai He Yongsheng Li
author_facet	Pengtao Yang Xiaolong Sun Dongying Liu Zhongtai He Yongsheng Li
author_sort	Pengtao Yang
title	Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
title_short	Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
title_full	Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
title_fullStr	Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
title_full_unstemmed	Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet
title_sort	hydrochemical characteristics of groundwater at the epicenter of the 2021 biru m6.1 earthquake in central tibet
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/255a481d4c034e129bcd016ce46c78f1
work_keys_str_mv	AT pengtaoyang hydrochemicalcharacteristicsofgroundwaterattheepicenterofthe2021birum61earthquakeincentraltibet AT xiaolongsun hydrochemicalcharacteristicsofgroundwaterattheepicenterofthe2021birum61earthquakeincentraltibet AT dongyingliu hydrochemicalcharacteristicsofgroundwaterattheepicenterofthe2021birum61earthquakeincentraltibet AT zhongtaihe hydrochemicalcharacteristicsofgroundwaterattheepicenterofthe2021birum61earthquakeincentraltibet AT yongshengli hydrochemicalcharacteristicsofgroundwaterattheepicenterofthe2021birum61earthquakeincentraltibet
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Hydrochemical Characteristics of Groundwater at the Epicenter of the 2021 Biru M6.1 Earthquake in Central Tibet

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