西藏定结幅区调工作中的断裂构造遥感研究方法探讨

西藏定结地区地质构造背景复杂、型式多样,对包括变质核杂岩在内的断裂构造的研究是该地区构造解析的重点内容。在该地区有效地运用遥感技术来辅助野外实地调查十分必要。本文从信息提取、光谱特征分析、空间结构分析等几个方面探讨了在该地区运用遥感技术进行断裂构造研究的工作方法。另外,针对定结幅ETM+影像的实际情况,分别介绍了冰雪覆盖下的地物弱信息提取和高山地区地形影响的消除及三维信息恢复等图像处理方法。

DISCUSSION ON FAULT RESEARCH METHOD USING REMOTE SENSING TECHNOLOGY: A EXAMPLE FROM DINGJIE REGIONAL GEOLOGICAL SURVEY, XIZANG

The awful condition of geography and climate in Dingjie area hinders the regional geological survey badly. It is necessary to survey in field assisted by remote sensing technology in that area. The complex background and various types are the geological tectonic characteristics of Dingjie area. It is a key of tectonic analysis to study the faults including metamorphic core complex in that area. This paper discusses methods to study faults using remote sensing technology such as information extraction, spectrum property analysis and spatial texture analysis. In addition, faint information extraction of objects covered by snow, geometric influence elimination in high mountain areas, and 3D information comeback are introduced respectively in allusion to the actual status of Dingjie ETM+ image.