| CR-InSAR与PS-InSAR联合解算方法及在西秦岭断裂中段缓慢变形研究中的应用 |
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| 引用本文： | 徐小波,屈春燕,单新建,张桂芳,马超,庾露,孟秀军.CR-InSAR与PS-InSAR联合解算方法及在西秦岭断裂中段缓慢变形研究中的应用[J].地球物理学报,2016,59(8):2796-2805. |
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| 作者姓名： | 徐小波 屈春燕 单新建 张桂芳 马超 庾露 孟秀军 |
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| 作者单位： | 1. 中国地震局地质研究所 地震动力学国家重点实验室, 北京 100029;2. 苏州科技大学 环境科学与工程学院, 江苏苏州 215009;3. 河南理工大学 测绘与国土信息工程学院, 河南焦作 454000 |
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| 基金项目： | 国家自然科学基金（41374105，41111140386）、地震动力学国家重点实验室自主研究课题（LED2015A03，LED2013A02）和中国地震局地质研究所基本科研业务（DF-IGCEA-2012-17）联合资助. |
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| 摘 要： | 本文结合CR-InSAR、PS-InSAR技术,将CR、PS点联合构网,采用LAMBDA方法进行相位解缠,研究西秦岭北缘断裂带中断的微小形变,结果得出断裂带表现出左旋走滑运动特征,断裂带南盘平均形变速率为2.3mm·a~(-1),北盘平均形变速率为-1.5mm·a~(-1),南北两盘平均形变速率差异为3.8mm·a~(-1),与其他学者GPS、地质测年研究成果相近.对研究区内的角反射器(CR点)安装、影像特征分析及形变解算进行了较为详细的论述,并对比分析了CR、PS点联合构网和PS点单独构网解算结果,得出对地质环境复杂的断裂带做永久散射体形变研究时,CR、PS点联合构网解算结果好、研究结果可靠.说明CR、PS点联合构网中,CR点由于其自身的高稳定特性,对整个解算网络起到了很好的整体控制作用,保证了解算结果正确.
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| 关 键 词： | CR-InSAR PS-InSAR 西秦岭断裂 形变 |
| 收稿时间： | 2015-06-16 |
Mapping slow deformation of the middle segment of the West Qinling fault using the combined algorithm of CR-InSAR and PS-InSAR |
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| XU Xiao-Bo,QU Chun-Yan,SHAN Xin-Jian,ZHANG Gui-Fang,MA Chao,YU Lu,MENG Xiu-Jun.Mapping slow deformation of the middle segment of the West Qinling fault using the combined algorithm of CR-InSAR and PS-InSAR[J].Chinese Journal of Geophysics,2016,59(8):2796-2805. |
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| Authors: | XU Xiao-Bo QU Chun-Yan SHAN Xin-Jian ZHANG Gui-Fang MA Chao YU Lu MENG Xiu-Jun |
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| Institution: | 1. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;2. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Jiangsu Suzhou 215009, China;3. School of Surveying and Land Information Engineering, Henan Polytechnic University, Henan Jiaozuo 454000, China |
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| Abstract: | In this work, the combination of CR-InSAR and PS-InSAR technique is used to measure the trival deformation on the middle section of the West Qinling north edge fault by constructing CRPS network jointly, in which the phase is unwrapped by using the LAMBDA method. The result shows left-lateral strike-slip movement on this fault. The average deformation rates of the northern and southern walls of the fault are -1.5 mm·a-1 and 2.3 mm·a-1, respectively. It means that the relative average deformation rate between two fault walls is approximately 3.8 mm·a-1, which is consistent with results from GPS measurement and geologic dating. Meanwhile, this paper details the Corner Reflector (CR points) installation, its image features and deformation solving method. Comparing the results from the CRPS-InSAR and PS-InSAR shows that the results achieved by joint inversion of CRPS network is more reliable than that from using PS points alone in complex geological environments. The result indicates that CRs play an important role in entire network,ensuring a correct and reliable deformation measurement because of its high reflection stability. |
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| Keywords: | CR-InSAR PS-InSAR West Qinling fault Slow deformation |
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