银川活动断层卫星遥感图像解译

采用对地表具有一定穿透能力的合成孔径雷达数据（ENVISAT ASAR）和光谱信息丰富的常规光学遥感数据（Landsat-7 ETM）作为主要数据源,综合了雷达遥感与光学遥感的成像优势,利用图像预处理、图像增强处理与多源遥感信息融合突出了银川研究区的活动断裂遥感影像特征。根据活动断层遥感解译标志,共解译出8条主要活动断层,分别为银川-平罗断裂、芦花台断裂、镇北堡断裂、黄河-灵武断裂、贺兰山东麓断裂带、黎家新庄-南泉子断裂、三关口断裂与青铜峡断裂,并对其影像特征与空间分布规律进行详细分析。银川活动断裂的解译分析为该地区的地震安全性评价与地震活动性分析奠定了基础。

Interpretation and Analysis of the Yinchuan Active Faults Based on Satellite Remote Sensing Images

Taking advantage of the synthetic aperture radar data（ENVISAT ASAR） which have the penetration ability to the earth surface and the remote sensing data（Landsat-7 ETM） which have abounding spectrum information,this paper carries out the image pre-processing,image strengthening and the multi-source information fusion to highlight the image characteristics of the active faults within Yinchuan target area.By the establishment and analyzing of image interpretation features of active faults,we obtain altogether eight major active faults,which respectively are the Yinchuan-Pingluo fault,Luhuatai fault,Zhenbeipu fault,Yellow River-Lingwu fault,Eastern slope fault of Helan Mountain,Lijiaxinzhuang-Nanquanzi fault,Sanguankou fault and Qingtongxia fault,and analyze in detail the image features and spatial distribution of the active faults.The image interpretation and analysis of the Yinchuan active faults offer the basing information to the seismic safety evaluation and analysis of seismic activity in this region.