Integration of InSAR and GNSS Data: Improved Precision and Spatial Resolution of 3D Deformation
文献类型：期刊论文
| 作者 | Wu, Xiaoyong1,2; Shao, Yun3; Yang, Zimeng3; Lan, Lihua4; Bian, Xiaolin2,3; Liu, Ming3 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2026 |
| 卷号 | 18期号:1页码:142 |
| 关键词 | Integration InSAR GNSS 3D deformation Eurasian reference frame Subsidence Haiyuan Fault Shallow creep |
| DOI | 10.3390/rs18010142 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | High-precision and high-resolution surface deformation provide crucial constraints for studying the kinematic characteristics and dynamic mechanisms of crustal movement. Considering the limitations of existing geodetic observations, we used Sentinel-1 SAR images and accurate GNSS velocity to obtain a high-resolution three-dimensional (3D) surface velocity map across the Laohushan segment and the 1920 Haiyuan earthquake rupture zone of the Haiyuan Fault on the northeastern Tibetan Plateau. We tied the InSAR LOS (Line of Sight) velocity to the stable Eurasian reference frame adopted by GNSS. Using Kriging interpolation constrained by GNSS north-south components, we decomposed the ascending and descending InSAR velocities into east-west and vertical components to derive a high-resolution 3D deformation. We found that a sharp velocity gradient extending similar to 45 km along the strike of the Laohushan segment, with a differential movement of similar to 3 mm/a across the fault, manifests in the east-west velocity component, suggesting that shallow creep has propagated to the surface. However, the east-west velocity component did not exhibit an abrupt discontinuity in the rupture zone of the Haiyuan earthquake. Subsidence caused by anthropogenic and hydrological processes in the region, such as groundwater extraction, coal mining, and hydrologic effects, exhibited distinct distribution characteristics in the vertical velocity component. Our study provides valuable insights into the crustal movement in this region. |
| URL标识 | 查看原文 |
| WOS关键词 | CRUSTAL DEFORMATION ; HAIYUAN FAULT ; INTERSEISMIC STRAIN ; LAND SUBSIDENCE ; GPS ; EARTHQUAKE ; CHINA ; VELOCITY ; SYSTEM ; SLIP |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001658653100001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219651]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Ming |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China; 3.Deqing Acad Satellite Applicat, Lab Microwave Spatial Intelligence & Cloud Platfor, Huzhou 313200, Peoples R China; 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xiaoyong,Shao, Yun,Yang, Zimeng,et al. Integration of InSAR and GNSS Data: Improved Precision and Spatial Resolution of 3D Deformation[J]. REMOTE SENSING,2026,18(1):142. |
| APA | Wu, Xiaoyong,Shao, Yun,Yang, Zimeng,Lan, Lihua,Bian, Xiaolin,&Liu, Ming.(2026).Integration of InSAR and GNSS Data: Improved Precision and Spatial Resolution of 3D Deformation.REMOTE SENSING,18(1),142. |
| MLA | Wu, Xiaoyong,et al."Integration of InSAR and GNSS Data: Improved Precision and Spatial Resolution of 3D Deformation".REMOTE SENSING 18.1(2026):142. |
入库方式： OAI收割
来源：地理科学与资源研究所
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