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基于ASTER-GDEM数据的亚东-谷露和错那-沃卡裂谷系地区构造地貌分析

CAO Zhi-chao, ZHU Li-dong,YANG Wen-guang, ZHANG Hong-liang, ZHONG Yao,MAI Yuan-jun,MA Teng-xiao

wf(2022)

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Abstract
基于ASTER GDEM数据运用ArcGIS技术对藏东南地区进行高程、地势起伏度、坡度、条带剖面和面积-高程积分值(hypsometry index,HI)等数字地貌分析,结合前人资料分析藏南东部区域地质地貌特征.区内表现出西高东低和南高北低的地貌格局,米拉山地垒影响拉萨河和尼洋河的发育,沃卡地堑促进雅鲁藏布江向东发育.HI变化能反映出构造活动和岩相差异,米拉山地垒和念青唐古拉演化阶段进入幼年期(HI>0.6)是构造活动因素主导,壮年期(0.35
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