• 责任者：Ji Lingyun (Key Laboratory of Active Tectonics and Volcano ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Xu Jiandong
• 刊名：Seismology and Geology
• 出版年：2013
• 卷期：35(3)
• 关键词：火山地貌 ; volcanic features ; 合成孔径雷达 ; synthetic aperture radar ; 新疆 ; Xinjiang
• 页码：p.532-541
• 图表：7 illus., 21 refs.
• 分类号：1600
• issnNo：ISSN0253-4967
• isbnNo：CN11-2192/P

     The Ashikule volcanic group is located in the Ashikule Basin, which is situated about 250km south of Yutian County,Xinjiang. Ashikule volcanic group consists of more than 10 large volcanoes and dozens of small volcanoes. Its present-day activity is unknown due to the extremely high altitude and inclement weather. Based on Envisat ASAR and ALOS PALSAR images,we obtain the land sur- face deformation field（2003-2010）by using stacking InSAR （Interferometric Synthetic Aperture Ra- dar） and SBAS-InSAR（Small BAseline Subsets-Interferometric Synthetic Aperture Radar）techniques. We also analyze the volcanic activity based on the InSAR-derived deformation field. Our results show that the deformation of Ashikule volcanic group was not obvious before the 2008 Yutian earthquake （2003-2007）. However, it showed a large-scale movement towards satellite after the 2008 Yutian earthquake （ 2008-2010） with largest accumulated displacement of 1 cm. We speculate the large-scale movement had nothing to do with volcanic activity,but it was a result of stress adjustment caused by the 2008 Yutian earthquake. Nevertheless,the northmost end of the coseismic rupture showed move- ment towards east,and also deflated very much with accumulated subsidence of 6cm.