Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations
Observations of present-day surface deformation are crucial for assessing the long-term seismic hazard of active faults. In this study, we used a high-precision deformation field derived from the integration of global navigation satellite system (GNSS) and interferometric synthetic aperture radar (I...
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Taylor & Francis Group
2025-08-01
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| Series: | Geo-spatial Information Science |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/10095020.2025.2534102 |
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| author | Xiaohang Wang Caijun Xu Yangmao Wen Jie Li Wei Xiong Jiuyuan Yang Shuai Wang Guangyu Xu Shanshan Li |
| author_facet | Xiaohang Wang Caijun Xu Yangmao Wen Jie Li Wei Xiong Jiuyuan Yang Shuai Wang Guangyu Xu Shanshan Li |
| author_sort | Xiaohang Wang |
| collection | DOAJ |
| description | Observations of present-day surface deformation are crucial for assessing the long-term seismic hazard of active faults. In this study, we used a high-precision deformation field derived from the integration of global navigation satellite system (GNSS) and interferometric synthetic aperture radar (InSAR) data to systematically investigate the strike-slip behavior of the entire Maidan Fault (MDF). Our results show that the MDF exhibits a clear sinistral strike-slip pattern: the western segment has a relatively higher slip rate of approximately 3.1–3.5 mm/yr, while the eastern segment shows a lower rate of around 2.0 mm/yr. We find that the MDF primarily accommodates the sinistral shear component induced by the clockwise rotation of the Tarim Basin in the Central Tianshan (CTS), accounting for more than half of the total sinistral motion in the region. In addition, by integrating historical earthquake records, we find that although the western segment of the MDF lacks significant historical seismicity, its relatively high slip rate and strong locking characteristics indicate an elevated seismic risk, highlighting the need for continued attention and monitoring. |
| format | Article |
| id | doaj-art-6efdfa0108b249fea2a0da6d0d629dee |
| institution | DOAJ |
| issn | 1009-5020 1993-5153 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geo-spatial Information Science |
| spelling | doaj-art-6efdfa0108b249fea2a0da6d0d629dee2025-08-20T02:46:36ZengTaylor & Francis GroupGeo-spatial Information Science1009-50201993-51532025-08-0111510.1080/10095020.2025.2534102Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observationsXiaohang Wang0Caijun Xu1Yangmao Wen2Jie Li3Wei Xiong4Jiuyuan Yang5Shuai Wang6Guangyu Xu7Shanshan Li8School of Geodesy and Geomatics, Wuhan University, Wuhan, ChinaSchool of Geodesy and Geomatics, Wuhan University, Wuhan, ChinaSchool of Geodesy and Geomatics, Wuhan University, Wuhan, ChinaUrumqi Institute of Central Asia Earthquake, China Earthquake Administration, Urumqi, ChinaKey Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan, ChinaCollege of Surveying and Geo-Informatics, North China University of Water Resources and Electric Power, Zhengzhou, ChinaSchool of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, ChinaSchool of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang, ChinaSchool of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, ChinaObservations of present-day surface deformation are crucial for assessing the long-term seismic hazard of active faults. In this study, we used a high-precision deformation field derived from the integration of global navigation satellite system (GNSS) and interferometric synthetic aperture radar (InSAR) data to systematically investigate the strike-slip behavior of the entire Maidan Fault (MDF). Our results show that the MDF exhibits a clear sinistral strike-slip pattern: the western segment has a relatively higher slip rate of approximately 3.1–3.5 mm/yr, while the eastern segment shows a lower rate of around 2.0 mm/yr. We find that the MDF primarily accommodates the sinistral shear component induced by the clockwise rotation of the Tarim Basin in the Central Tianshan (CTS), accounting for more than half of the total sinistral motion in the region. In addition, by integrating historical earthquake records, we find that although the western segment of the MDF lacks significant historical seismicity, its relatively high slip rate and strong locking characteristics indicate an elevated seismic risk, highlighting the need for continued attention and monitoring.https://www.tandfonline.com/doi/10.1080/10095020.2025.2534102TianshanMaidan Fault (MDF)seismic riskinterferometric synthetic aperture radar (InSAR)global navigation satellite system (GNSS) |
| spellingShingle | Xiaohang Wang Caijun Xu Yangmao Wen Jie Li Wei Xiong Jiuyuan Yang Shuai Wang Guangyu Xu Shanshan Li Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations Geo-spatial Information Science Tianshan Maidan Fault (MDF) seismic risk interferometric synthetic aperture radar (InSAR) global navigation satellite system (GNSS) |
| title | Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations |
| title_full | Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations |
| title_fullStr | Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations |
| title_full_unstemmed | Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations |
| title_short | Strike-slip pattern of the Maidan fault along the southern margin of the Central Tianshan revealed by InSAR and GNSS observations |
| title_sort | strike slip pattern of the maidan fault along the southern margin of the central tianshan revealed by insar and gnss observations |
| topic | Tianshan Maidan Fault (MDF) seismic risk interferometric synthetic aperture radar (InSAR) global navigation satellite system (GNSS) |
| url | https://www.tandfonline.com/doi/10.1080/10095020.2025.2534102 |
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