Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022
The MS6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan Province, China at 12:52 p.m. on Sept. 5, 2022, is preliminarily analyzed in terms of regional tectonics, historical earthquakes, sequence characteristics and focal mechanism solutions. The results show that: 1) The magnitude...
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| Format: | Article |
| Language: | English |
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Society for Risk Analysis - China
2024-03-01
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| Series: | Journal of Risk Analysis and Crisis Response (JRACR) |
| Subjects: | |
| Online Access: | https://doi.org/10.54560/jracr.v14i1.438 |
| _version_ | 1827300238601224192 |
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| author | Min Zhao Feng Long Yue Gong Fang Du |
| author_facet | Min Zhao Feng Long Yue Gong Fang Du |
| author_sort | Min Zhao |
| collection | DOAJ |
| description | The MS6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan Province, China at 12:52 p.m. on Sept. 5, 2022, is preliminarily analyzed in terms of regional tectonics, historical earthquakes, sequence characteristics and focal mechanism solutions. The results show that: 1) The magnitude difference ΔM between the main shock and the maximum aftershock, the energy ratio ER of the main shock to the aftershocks, the p-value and the estimated Mmax-value indicate that the MS6.8 Luding earthquake sequence can be divided into the main shock-aftershock type (MAT). 2) The spatial distribution of the aftershocks, their corresponding b-value and expected maximum magnitude are obviously segmented, which reflect the complexity of the seismogenic tectonics. 3) According to the focal mechanisms obtained from the HASH program, the geometry distribution of the sequence, and the relationship between the sequence and the nearby faults, it can be inferred that the Moxi fault segment of the Xianshuihe fault zone is the seismogenic tectonics of the MS6.8 Luding earthquake sequence. |
| first_indexed | 2024-04-24T15:49:52Z |
| format | Article |
| id | doaj.art-0421e6d1e49d4b4286580bcbbf6e6223 |
| institution | Directory Open Access Journal |
| issn | 2210-8491 2210-8505 |
| language | English |
| last_indexed | 2024-04-24T15:49:52Z |
| publishDate | 2024-03-01 |
| publisher | Society for Risk Analysis - China |
| record_format | Article |
| series | Journal of Risk Analysis and Crisis Response (JRACR) |
| spelling | doaj.art-0421e6d1e49d4b4286580bcbbf6e62232024-04-01T12:13:04ZengSociety for Risk Analysis - ChinaJournal of Risk Analysis and Crisis Response (JRACR)2210-84912210-85052024-03-01141-68090Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022Min Zhao0Feng Long1Yue Gong2Fang Du3Sichuan Earthquake Agency, Chengdu (610041), Sichuan, China;State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan (430077), Hubei, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, China;State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan (430077), Hubei, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaThe MS6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan Province, China at 12:52 p.m. on Sept. 5, 2022, is preliminarily analyzed in terms of regional tectonics, historical earthquakes, sequence characteristics and focal mechanism solutions. The results show that: 1) The magnitude difference ΔM between the main shock and the maximum aftershock, the energy ratio ER of the main shock to the aftershocks, the p-value and the estimated Mmax-value indicate that the MS6.8 Luding earthquake sequence can be divided into the main shock-aftershock type (MAT). 2) The spatial distribution of the aftershocks, their corresponding b-value and expected maximum magnitude are obviously segmented, which reflect the complexity of the seismogenic tectonics. 3) According to the focal mechanisms obtained from the HASH program, the geometry distribution of the sequence, and the relationship between the sequence and the nearby faults, it can be inferred that the Moxi fault segment of the Xianshuihe fault zone is the seismogenic tectonics of the MS6.8 Luding earthquake sequence.https://doi.org/10.54560/jracr.v14i1.438the ms6.8 luding earthquakesequence analysisthe focal mechanismsseismogenic tectonics |
| spellingShingle | Min Zhao Feng Long Yue Gong Fang Du Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022 Journal of Risk Analysis and Crisis Response (JRACR) the ms6.8 luding earthquake sequence analysis the focal mechanisms seismogenic tectonics |
| title | Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022 |
| title_full | Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022 |
| title_fullStr | Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022 |
| title_full_unstemmed | Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022 |
| title_short | Characteristic Analysis of the MS6.8 Luding Earthquake Sequence in Sichuan, China, on Sept. 5, 2022 |
| title_sort | characteristic analysis of the ms6 8 luding earthquake sequence in sichuan china on sept 5 2022 |
| topic | the ms6.8 luding earthquake sequence analysis the focal mechanisms seismogenic tectonics |
| url | https://doi.org/10.54560/jracr.v14i1.438 |
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