| 基于 D-InSAR 技术的当雄地震形变场提取研究 |
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| 引用本文： | 杨珍,张永志,吴然,张文军,叶凯.基于 D-InSAR 技术的当雄地震形变场提取研究[J].测绘工程,2016,25(8):5-10. |
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| 作者姓名： | 杨珍 张永志 吴然 张文军 叶凯 |
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| 作者单位： | 长安大学 地质工程与测绘学院,陕西 西安,710000;甘肃省测绘地理信息局 地图院,甘肃 兰州,730000 |
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| 基金项目： | 国家自然科学基金资助项目(41374028) |
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| 摘 要： | 随着D-InSAR技术在同震形变量测方面的优势日益突出,文中以2008年10月6日当雄Mw6.3级地震为对象,采用ENVISAT搭载的ASAR传感器c波段在图像模式下的5景level 0级影像,以90 m分辨率的SRTM DEM作为外部DEM,使用GAMMA软件采用二轨差分干涉测量的方法获取当雄地震同震形变场,并对其进行分析,确定震中位置为90.372°E,29.734°N,得到同震垂直形变约为33cm,形变量精度达到厘米级。
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| 关 键 词： | D-InSAR 地震 ENVISAT 二轨差分 地震形变场 |
On the extraction of surface deformation caused by Damxung earthquake based on D-InSAR technology |
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| Yang Zhen,Zhang Yongzhi,Wu Ran,Zhang Wenjun,Ye Kai.On the extraction of surface deformation caused by Damxung earthquake based on D-InSAR technology[J].Engineering of Surveying and Mapping,2016,25(8):5-10. |
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| Authors: | Yang Zhen Zhang Yongzhi Wu Ran Zhang Wenjun Ye Kai |
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| Abstract: | As advantages of D‐InSAR technology in coseismic deformation and measurement are becoming more and more prominent ,this paper takes Damxung Mw 6.3 earthquake on October 6 ,2008 as the case , adopting the image of 5 scenes and level 0 of C band in the image mode of ASAR sensor being equipped on ENVISAT ,using SRTM DEM with 90 m resolution ratio as the external DEM ,and with GAMMA software and the approach of two‐pass differential InSAR technology to obtain the coseismic displacement of Damxung earthquake .And analysis is made to determine the location of the epicenter as 90.372°E , 29.734°N ,gaining about 35 cm of the coseismic vertical deformation ,of w hich the deformation precision reaches the cm‐level . |
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| Keywords: | D-InSAR earthquake ENVISAT two-pass differential coseismic displacement |
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