Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China
Systematic measurements of water temperature are lacking but useful in understanding the relationship between water temperature and earthquakes. Based on the water temperature data, geological structure, borehole structure, and temperature gradient in the Jinjia well, Southwest China, we systematica...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/16/2905 |
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| author | Zhuzhuan Yang Shunyun Chen Qiongying Liu Lichun Chen |
| author_facet | Zhuzhuan Yang Shunyun Chen Qiongying Liu Lichun Chen |
| author_sort | Zhuzhuan Yang |
| collection | DOAJ |
| description | Systematic measurements of water temperature are lacking but useful in understanding the relationship between water temperature and earthquakes. Based on the water temperature data, geological structure, borehole structure, and temperature gradient in the Jinjia well, Southwest China, we systematically analysed the water temperature changes related to earthquakes. The water temperature of the Jinjia well recorded the coseismic changes caused by the Wenchuan M7.9 and Panzhihua M6.1 earthquakes in 2008. We also found abnormal changes in the water temperature, after which moderate to strong earthquakes occurred in the surrounding region. The preseismic abnormal changes of the Jinjia well were rising-recovery (rising to a high value and continuing for a period of time before decreasing or quickly recovering), with the range of 0.007–0.07 °C. The maximum change (0.07 °C) occurred before the M7.9 Wenchuan earthquake in 2008. According to the Molchan error diagram, the most likely time for an earthquake to occur is within approximately 4 months after the water temperature exceeds the threshold temperature. In the Jinjia well, the installation depth of the temperature sensor affected the correlation between the temperature changes and earthquakes with a seismic energy density above 10<sup>−3</sup> J·m<sup>−3</sup>. The shorter the distance between the sensor and the fault, the higher the probability of water temperature changes related to earthquakes. |
| first_indexed | 2024-03-10T23:30:25Z |
| format | Article |
| id | doaj.art-1fa0a4c82cb54b70949b415db8012c34 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T23:30:25Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-1fa0a4c82cb54b70949b415db8012c342023-11-19T03:22:26ZengMDPI AGWater2073-44412023-08-011516290510.3390/w15162905Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest ChinaZhuzhuan Yang0Shunyun Chen1Qiongying Liu2Lichun Chen3Key Laboratory of Active Tectonics and Volcano, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaState Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, ChinaCollege of Earth Sciences, Guilin University of Technology, Guilin 541006, ChinaSystematic measurements of water temperature are lacking but useful in understanding the relationship between water temperature and earthquakes. Based on the water temperature data, geological structure, borehole structure, and temperature gradient in the Jinjia well, Southwest China, we systematically analysed the water temperature changes related to earthquakes. The water temperature of the Jinjia well recorded the coseismic changes caused by the Wenchuan M7.9 and Panzhihua M6.1 earthquakes in 2008. We also found abnormal changes in the water temperature, after which moderate to strong earthquakes occurred in the surrounding region. The preseismic abnormal changes of the Jinjia well were rising-recovery (rising to a high value and continuing for a period of time before decreasing or quickly recovering), with the range of 0.007–0.07 °C. The maximum change (0.07 °C) occurred before the M7.9 Wenchuan earthquake in 2008. According to the Molchan error diagram, the most likely time for an earthquake to occur is within approximately 4 months after the water temperature exceeds the threshold temperature. In the Jinjia well, the installation depth of the temperature sensor affected the correlation between the temperature changes and earthquakes with a seismic energy density above 10<sup>−3</sup> J·m<sup>−3</sup>. The shorter the distance between the sensor and the fault, the higher the probability of water temperature changes related to earthquakes.https://www.mdpi.com/2073-4441/15/16/2905water temperaturecoseismic changepreseismic changeearthquakeseismic energy densityJinjia well |
| spellingShingle | Zhuzhuan Yang Shunyun Chen Qiongying Liu Lichun Chen Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China Water water temperature coseismic change preseismic change earthquake seismic energy density Jinjia well |
| title | Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China |
| title_full | Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China |
| title_fullStr | Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China |
| title_full_unstemmed | Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China |
| title_short | Water Temperature Changes Related to Strong Earthquakes: The Case of the Jinjia Well, Southwest China |
| title_sort | water temperature changes related to strong earthquakes the case of the jinjia well southwest china |
| topic | water temperature coseismic change preseismic change earthquake seismic energy density Jinjia well |
| url | https://www.mdpi.com/2073-4441/15/16/2905 |
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