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Inversion of Coseismic Rupture Model and Deformation Time Series for the Jishishan, Gansu MS6.2 Earthquake Using InSAR
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Jianan GAO1, Rong ZOU1, 2, *, Junxiang WANG1, 3, Rui ZHENG1, Yifan MENG1
Journal of Geodesy and Geodynamics | 2025, 45(2) : 177 - 183
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Journal of Geodesy and Geodynamics | 2025, 45(2): 177-183
Inversion of Coseismic Rupture Model and Deformation Time Series for the Jishishan, Gansu MS6.2 Earthquake Using InSAR
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Jianan GAO1, Rong ZOU1, 2, *, Junxiang WANG1, 3, Rui ZHENG1, Yifan MENG1
Affiliations
  • 1 School of Geophysics and Geomatics, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China
  • 2 Hubei Subsurface Multi-Scale Imaging Key Laboratory, 388 Lumo Road, Wuhan 430074, China
  • 3 Central Southern China Electric Power Design Institute Co Ltd, CPECC, 12 Second-Zhongnan Road, Wuhan 430071, China

    • GAO Jianan, postgraduate, majors in surface deformation monitoring by InSAR, E-mail:

About Author:

GAO Jianan, postgraduate, majors in surface deformation monitoring by InSAR, E-mail:

Published: 2025-02-15 doi: 10.14075/j.jgg.2024.04.148
Outline
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We use ascending and descending orbit data of Sentinel-1A satellite to obtain high-precision coseismic deformation fields of Jishishan MS6.2 earthquake using differential interferometry technology, and employ SBAS-InSAR technique to acquire cumulative deformation time series in the area near epicenter over the past six months. The results show that surface deformation is primarily uplift, with the maximum LOS coseismic displacements of about 6.8 cm and 7.3 cm for ascending and descending orbits, respectively. The rupture mainly occurred at depths ranging from 7 to 15 km underground, with a maximum slip of approximately 0.55 m. Within two months after the earthquake, there is an expanding trend of uplift deformation in the near-field and northwest side of the epicenter. We conclude that the Jishishan earthquake trended northwest, dipping northeast, and the seismogenic fault belongs to the hidden branch fault on southeast side of the southern margin of Lajishan fault zone. The large-scale sudden deformation after the earthquake may be related to pore pressure release, and the surface stability needs further observation.

Jishishan MS6.2 earthquake  /  synthetic aperture radar interferometry  /  coseismic deformation  /  fault slip distribution  /  temporal InSAR
高嘉楠, 邹蓉, 王峻祥, 郑瑞, 孟一帆. 利用InSAR技术反演甘肃积石山MS6.2地震同震破裂模型及形变时间序列. 大地测量与地球动力学, 2025 , 45 (2) : 177 -183 . DOI: 10.14075/j.jgg.2024.04.148
Jianan GAO, Rong ZOU, Junxiang WANG, Rui ZHENG, Yifan MENG. Inversion of Coseismic Rupture Model and Deformation Time Series for the Jishishan, Gansu MS6.2 Earthquake Using InSAR[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (2) : 177 -183 . DOI: 10.14075/j.jgg.2024.04.148
Funding
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  • National Natural Science Foundation of China(42274009)
  • National Natural Science Foundation of China(41731071)
Appendix
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Year 2025 volume 45 Issue 2
26
10
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Article Info
doi: 10.14075/j.jgg.2024.04.148
  • Receive Date：2024-04-03
  • Online Date：2026-10-30
  • Published：2025-02-15
Article Data
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History
  • Received：2024-04-03
Funding
National Natural Science Foundation of China(42274009)
National Natural Science Foundation of China(41731071)
Affiliations
    1 School of Geophysics and Geomatics, China University of Geosciences, 388 Lumo Road, Wuhan 430074, China
    2 Hubei Subsurface Multi-Scale Imaging Key Laboratory, 388 Lumo Road, Wuhan 430074, China
    3 Central Southern China Electric Power Design Institute Co Ltd, CPECC, 12 Second-Zhongnan Road, Wuhan 430071, China
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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