西昆仑—西南天山地区断裂活动性研究

利用多时相、多波段卫星图像，对西昆仑-西南天山地区大约500000km^2范围的断裂活动性进行分析判读。根据卫星图像上显示的地貌、微地貌特征，构造组合形态，将所判读的断裂分为全新世活动、晚更新世活动以及活动不明显的3类，结合地震活动性，对该地区强震危险性进行了分析，提出西昆仑布伦口组合构造带活动，可能是形成20世纪南天山前缘乌恰、阿图什、伽师一系列强烈地震的原因。

Faulting in the Western Kunlun-southwestern Tianshan Area

Fault activity in an area of 500000 km2 in the western Kunlun and southwestern Tianshan Mts. was anal-ysed and interpreted based on multispectral and multitemporal satellite images. Geomorphic and microgeomor-phic features and structural assemblages on the images suggest 3 categories of active faults, recent, Late Pleis-tocene and indefinite faults. In accordance with seismic activity, earthquake risks in the area were analysed. The results showed: the active belt of the Bulunkou structural assemblage in the western Kunlun may be the cause of a series of strong earthquakes at Wuqia (Ulugqat), Artux, Jiashi (Payzawat) of the southern Tian-shan mountain in the 20th century.