典型滑坡遥感影像特征研究

A study of remote sensing image features of typical landslides

对于不同地质条件、成因类型和运动距离的滑坡,在不同分辨率遥感图像上显示的影像特征往往存在较大差别,尚难以确定统一的滑坡遥感识别标志。尤其对于规模较大、形成机理和活动规律复杂的远程滑坡和复合滑坡,一直是遥感识别的难点,可供借鉴的前人研究成果不多,目前主要还是靠地面调查。在国内外滑坡遥感调查成果调研以及国土资源大调查地质灾害遥感调查、近年来地质灾害应急遥感调查研究成果的基础上,分析和总结了笔者参与调查过的巫山大清坎滑坡、千将坪滑坡、武隆滑坡及西藏102滑坡群等典型滑坡的遥感影像特征,提出了滑坡(尤其是高速远程滑坡)的遥感识别标志,以期与同行专家共商榷。

The image features of landslides with different kinds of geological conditions, types and runout distances show great difference in remote sensing images with different resolutions. For long -runout landslide and complex landslide, the available interpretation keys are few, so that the identification of landslide mainly relies on ground survey. On the basis of the achievements of landslide remote sensing investigation obtained both in China and abroad and the remote sensing investigation projects for geological hazards, the authors analyzed the remote sensing image features of typical landslides, including Daqingkan Landslide, Qianjiangping Landslide, Wulong Landslide and 102 landslide group in Tibetan region. Then, the interpretation keys to landslides, especially to the high -speed and long- runout landslides, were summarized for colleagues＇reference.