利用DInSAR的东南极极记录和达尔克冰川冰流速提取与分析  

Determination of Ice-flow Velocity at the Polar Record Glacier and Dalk Glacier Using DInSAR

作　　者：周春霞[1,2] 邓方慧 艾松涛[1,2] 王泽民[1,2] 鄂栋臣[1,2] 

机构地区：[1]武汉大学中国南极测绘研究中心,湖北武汉430079 [2]极地测绘科学国家测绘地理信息局重点实验室,湖北武汉430079

出　　处：《武汉大学学报（信息科学版）》2014年第8期940-944,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41076126;41376187);国家863计划资助项目(2009AA12Z133);国家海洋局极地科学重点实验室开放基金资助项目(KP201001);极地专项资助项目(CHINARE2014-02-04)~~

摘　　要：利用1996年ERS-1/2tandem SAR数据,采用DInSAR方法提取了极记录和达尔克冰川的冰流速,并利用冰流速转换模型和该地区的实测值进行了对比。结果表明,DInSAR结果很好地体现了整个区域的冰流速。对于内陆地区,DInSAR提取的监测点冰流速和实测值非常吻合;对于达尔克冰川的前缘,受时间差异和潮汐等因素的影响,DInSAR推求的冰流速结果略小于实测值。ERS-1/2 tandem SAR images acquired in 1996 were utilized to map the ice-flow velocity of the Polar Record and Dalk Glaciers using DInSAR. The horizontal component was derived from lineof-sight velocity estimates, and compared with the field measurements. The DInSAR results revealed an ice velocity map of the whole area. For the inland areas, the DInSAR results were in good agreement with field measurements. As for the front of the Dalk Glacier, the ice velocity derived from DIn- SAR was smaller than the field measurements because of the differences between data acquisition times, tidal motion, etc.

关 键 词：差分干涉测量 冰流速 极记录冰川 达尔克冰川 

分 类 号：P237.9[天文地球—摄影测量与遥感] P343.62[天文地球—测绘科学与技术]