遥感图像在吐-哈盆地活动断裂带研究中的应用

The Application of Remote Sensing Image on the Active Fault Zone Study of Turpan-Hami Basin

遥感图像具有宏观、真实和构造迹线清晰的特征,所以通过遥感图像解译来研究地震地质是一种十分有效的方法。本文试图应用遥感图像目视解译结果来研究吐-哈盆地的活动构造特征,并且讨论了该地区的地震活动规律。在本研究中,一方面,在几何纠正和镶嵌后,把4、7、1波段与第8波段融合,获得一幅15m分辨率的彩色图像,在此基础上进行一些有效的图像处理,如增强和特征提取,通过相关处理,增强了线性特征;另一方面通过DEM分析图像,产生三维效果。这两方面工作对研究地质构造和活动断裂带都是非常有用的。本文用纹理分析和DEM 分析的方法,提取了该地区的线性构造特征,使得我们对双背驮结构有了新的认识,并且对该地区的特殊结构与地震活动规律的相关性做了一些分析。

Remote Sensing image has such characters as macroscopic,real and clear structure trace,so it is an efficient method to apply Remote Sensing image to interpreting,in order to study earthquake geology.This paper attempts to apply the visual interpretation result of Remote Sensing image to studying the active structure character in Turpan-Hami basin,and discussing the earthquake activity rule of this region.In this paper,on the one hand,after geometric correction and mosaic we merge 4,7,1 bands with the 8th band,gaining a color image with 15-metre resolution.On the base of it,we do some effective processing such as enhancement and feature extraction,enhancing the linear feature by these correlative processing.On the other hand,we analyze the image with DEM,producing 3D view.Both them are very useful for us to study the geological structure and active fault zone.This paper extracts the linear structure character of this region with texture analysis and DEM analysis method,and then we have a new understanding for double bow-backed structure.At last we do some analysis about the correlation of this special structure and the earthquake activity rule in this region.