Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes
Jiaokou reservoir earthquakes in Ningbo from 2009 to 2021 were relocated using the double difference positioning method. The focal mechanism solutions of large earthquakes were calculated by HASH method. Based on the location distribution, depth distribution and overall focal mechanism solution char...
| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Progress in Earthquake Sciences
2023-03-01
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| Series: | 地震科学进展 |
| Subjects: | |
| Online Access: | https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-110 |
| _version_ | 1811154003209224192 |
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| author | Beilei Zhang Xiao Peng |
| author_facet | Beilei Zhang Xiao Peng |
| author_sort | Beilei Zhang |
| collection | DOAJ |
| description | Jiaokou reservoir earthquakes in Ningbo from 2009 to 2021 were relocated using the double difference positioning method. The focal mechanism solutions of large earthquakes were calculated by HASH method. Based on the location distribution, depth distribution and overall focal mechanism solution characteristics of the earthquakes after precise positioning, the seismogenic structure and seismogenic mechanism were discussed by combining with the regional geological tectonic background, geological conditions in the reservoir area and the change of reservoir water level. The results show that the seismogenic mechanism of the Jiaokou reservoir earthquake sequence in 2009—2012 is similar to that in 2018—2021, and the regional fault Changxing—Fenghua may be the seismogenic fault. The reservoir water infiltrates through the fracture fracture zone, the pore water pressure diffuses, the reservoir water softens and weakens the rock for a long time, causing the fault plane and some weak parts in the deep part to become unstable areas, and finally triggering the earthquake under the loading and unloading stress field caused by the change of reservoir water. |
| first_indexed | 2024-04-09T21:23:25Z |
| format | Article |
| id | doaj.art-119b9466a3504fc4b625050058150e62 |
| institution | Directory Open Access Journal |
| issn | 2096-7780 |
| language | zho |
| last_indexed | 2024-04-09T21:23:25Z |
| publishDate | 2023-03-01 |
| publisher | Editorial Office of Progress in Earthquake Sciences |
| record_format | Article |
| series | 地震科学进展 |
| spelling | doaj.art-119b9466a3504fc4b625050058150e622023-03-28T03:00:22ZzhoEditorial Office of Progress in Earthquake Sciences地震科学进展2096-77802023-03-015339710710.19987/j.dzkxjz.2022-1102022-110Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakesBeilei Zhang0Xiao Peng1Ningbo Earthquake Monitoring and Prediction Center, Zhejiang Ningbo 315000, ChinaNingbo Earthquake Monitoring and Prediction Center, Zhejiang Ningbo 315000, ChinaJiaokou reservoir earthquakes in Ningbo from 2009 to 2021 were relocated using the double difference positioning method. The focal mechanism solutions of large earthquakes were calculated by HASH method. Based on the location distribution, depth distribution and overall focal mechanism solution characteristics of the earthquakes after precise positioning, the seismogenic structure and seismogenic mechanism were discussed by combining with the regional geological tectonic background, geological conditions in the reservoir area and the change of reservoir water level. The results show that the seismogenic mechanism of the Jiaokou reservoir earthquake sequence in 2009—2012 is similar to that in 2018—2021, and the regional fault Changxing—Fenghua may be the seismogenic fault. The reservoir water infiltrates through the fracture fracture zone, the pore water pressure diffuses, the reservoir water softens and weakens the rock for a long time, causing the fault plane and some weak parts in the deep part to become unstable areas, and finally triggering the earthquake under the loading and unloading stress field caused by the change of reservoir water.https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-110jiaokou reservoir earthquakedouble difference positioninghash methodinduced earthquake |
| spellingShingle | Beilei Zhang Xiao Peng Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes 地震科学进展 jiaokou reservoir earthquake double difference positioning hash method induced earthquake |
| title | Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes |
| title_full | Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes |
| title_fullStr | Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes |
| title_full_unstemmed | Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes |
| title_short | Discussion on precise location, focal mechanism and seismogenic mechanism of Jiaokou reservoir earthquakes |
| title_sort | discussion on precise location focal mechanism and seismogenic mechanism of jiaokou reservoir earthquakes |
| topic | jiaokou reservoir earthquake double difference positioning hash method induced earthquake |
| url | https://www.gjdzdt.cn/en/article/doi/10.19987/j.dzkxjz.2022-110 |
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