InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake
The M<sub>w</sub>7.0 earthquake that occurred on 23 January 2024, in Wushi County, Xinjiang, China, was centered on the Maidan fault, located at the rear edge of the Kalpin reverse-thrust system in the southwestern Tianshan Mountains, at a depth of 13 km. This event caused significant su...
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MDPI AG
2025-07-01
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| author | Mingyang Jin Yongsheng Li Yujiang Li |
| author_facet | Mingyang Jin Yongsheng Li Yujiang Li |
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| description | The M<sub>w</sub>7.0 earthquake that occurred on 23 January 2024, in Wushi County, Xinjiang, China, was centered on the Maidan fault, located at the rear edge of the Kalpin reverse-thrust system in the southwestern Tianshan Mountains, at a depth of 13 km. This event caused significant surface deformation and triggered a series of secondary geologic hazards. In this study, data from two satellites, Sentinel-1A and LuTan-1, were combined to obtain the coseismic deformation field of the earthquake. The two-step inversion method was applied to determine the geometrical parameters and slip characteristics of the mainshock fault. The results indicate that the seismicity is primarily driven by reverse faulting, with a contribution from sinistral strike–slip faulting, and the maximum dip–slip displacement is 4.2 m. Additionally, an aftershock of magnitude 5.7 occurring on January 30 was identified in the LT-1 data. This aftershock was controlled by a reverse fault dipping opposite to the mainshock fault, and its maximum slip is 0.65 m. Analysis of the Coulomb stress triggering effect suggests that the Wushi earthquake may have induced the aftershock. |
| format | Article |
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| institution | DOAJ |
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| publishDate | 2025-07-01 |
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| spelling | doaj-art-007e69e00ecb43d482b4cd28fa7881582025-08-20T03:07:58ZengMDPI AGRemote Sensing2072-42922025-07-011714243510.3390/rs17142435InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 EarthquakeMingyang Jin0Yongsheng Li1Yujiang Li2National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100086, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100086, ChinaNational Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100086, ChinaThe M<sub>w</sub>7.0 earthquake that occurred on 23 January 2024, in Wushi County, Xinjiang, China, was centered on the Maidan fault, located at the rear edge of the Kalpin reverse-thrust system in the southwestern Tianshan Mountains, at a depth of 13 km. This event caused significant surface deformation and triggered a series of secondary geologic hazards. In this study, data from two satellites, Sentinel-1A and LuTan-1, were combined to obtain the coseismic deformation field of the earthquake. The two-step inversion method was applied to determine the geometrical parameters and slip characteristics of the mainshock fault. The results indicate that the seismicity is primarily driven by reverse faulting, with a contribution from sinistral strike–slip faulting, and the maximum dip–slip displacement is 4.2 m. Additionally, an aftershock of magnitude 5.7 occurring on January 30 was identified in the LT-1 data. This aftershock was controlled by a reverse fault dipping opposite to the mainshock fault, and its maximum slip is 0.65 m. Analysis of the Coulomb stress triggering effect suggests that the Wushi earthquake may have induced the aftershock.https://www.mdpi.com/2072-4292/17/14/2435InSARWushi earthquakeinversionSentinel-1Lutan-1 |
| spellingShingle | Mingyang Jin Yongsheng Li Yujiang Li InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake Remote Sensing InSAR Wushi earthquake inversion Sentinel-1 Lutan-1 |
| title | InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake |
| title_full | InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake |
| title_fullStr | InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake |
| title_full_unstemmed | InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake |
| title_short | InSAR Inversion of the Source Mechanism of the 23 January 2024 Xinjiang Wushi M<sub>w</sub>7.0 Earthquake |
| title_sort | insar inversion of the source mechanism of the 23 january 2024 xinjiang wushi m sub w sub 7 0 earthquake |
| topic | InSAR Wushi earthquake inversion Sentinel-1 Lutan-1 |
| url | https://www.mdpi.com/2072-4292/17/14/2435 |
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