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Interseismic Crustal Deformation and Creep Characteristics along Xianshuihe Fault Based on Time-Series InSAR Techniques
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Lang XU1, Qiang CHEN1, Yinghui YANG2, Senping LIU1, Yunfeng BAI1, Jingjing ZHAO1
Journal of Geodesy and Geodynamics | 2025, 45(6) : 618 - 625
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Journal of Geodesy and Geodynamics | 2025, 45(6): 618-625
Interseismic Crustal Deformation and Creep Characteristics along Xianshuihe Fault Based on Time-Series InSAR Techniques
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Lang XU1, Qiang CHEN1, Yinghui YANG2, Senping LIU1, Yunfeng BAI1, Jingjing ZHAO1
Affiliations
  • 1 Faculty of Geosciences and Engineering, Southwest Jiaotong University, 999 Xi'an Road, Chengdu 611756, China
  • 2 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, 1 Dongsan Road, Chengdu 610059, China

    • XU Lang, PhD candidate, majors in InSAR technology and its application in earthquake cycles, E-mail:

About Author:

XU Lang, PhD candidate, majors in InSAR technology and its application in earthquake cycles, E-mail:

Published: 2025-06-15 doi: 10.14075/j.jgg.2024.06.294
Outline
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Based on the Sentinel-1 ascending and descending orbit images from 2014 to 2023, we use the time network orbit error correction method considering long-term structural rates to remove orbit errors, and the external GACOS atmospheric data and public main image superposition method are combined to remove atmospheric delay errors, obtaining high-precision and high-density InSAR interseismic velocity fields along Xianshuihe fault, revealing the fault movement characteristics dominated by left-lateral strike-slip. We calculate the fault-parallel velocity from InSAR data, which shows that there is a significant difference in the fault-parallel rate on both sides of far-field fault, about 8-11 mm/a. We also obtain the high-precision three-dimensional velocity field using GNSS data, and calculate the maximum shear rate strain field. The results show that the shallow creep movement is significant between Zhuwo to the middle of Kangding segment. Among them, the shear strain in the Songlinkou to the middle of Kangding segment is the strongest, with a maximum magnitude of 0.6 ustrain/a and a maximum creep rate of 7.0 mm/a. This study is helpful to understand the interseismic deformation and creep characteristics and provide high-quality data for interseismic coupling model inversion and earthquake risk assessment.

Xianshuihe fault  /  time-series InSAR techniques  /  interseismic creep  /  crustal deformation
徐浪, 陈强, 杨莹辉, 刘森平, 白运峰, 赵晶晶. 基于时序InSAR技术的鲜水河断裂震间地壳形变与蠕滑特征研究. 大地测量与地球动力学, 2025 , 45 (6) : 618 -625 . DOI: 10.14075/j.jgg.2024.06.294
Lang XU, Qiang CHEN, Yinghui YANG, Senping LIU, Yunfeng BAI, Jingjing ZHAO. Interseismic Crustal Deformation and Creep Characteristics along Xianshuihe Fault Based on Time-Series InSAR Techniques[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (6) : 618 -625 . DOI: 10.14075/j.jgg.2024.06.294
Funding
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  • Independent Research Project of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(SKLGP2021Z016)
  • National Natural Science Foundation of China(42471485)
Appendix
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Year 2025 volume 45 Issue 6
22
7
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Article Info
doi: 10.14075/j.jgg.2024.06.294
  • Receive Date：2024-06-20
  • Online Date：2026-10-30
  • Published：2025-06-15
Article Data
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History
  • Received：2024-06-20
Funding
Independent Research Project of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(SKLGP2021Z016)
National Natural Science Foundation of China(42471485)
Affiliations
    1 Faculty of Geosciences and Engineering, Southwest Jiaotong University, 999 Xi'an Road, Chengdu 611756, China
    2 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, 1 Dongsan Road, Chengdu 610059, 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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Percentage 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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