卫星遥感数据在山区地下水信息提取方法——以辽宁省凌源市为例

Extraction of Underground Water Information at a Mountainous Area Based on ETM Images——Exploration in Lingyuan City,Liaoning Province as Example

特定条件下土壤湿度信息能够反映出浅层地下水赋存信息,在辽宁西部严重缺水地区地下水勘查新技术应用课题研究中,以枯水期的Landsat7ETM为数据源,借助专业图像处理软件的分析功能模块,对多波段数据进行主成分分析、拉伸增强、密度分割等处理,对山区土壤湿度信息进行有效识别,结合地貌、构造、岩性等要素的解译结果进行综合分析,在影像上可圈定出浅层地下水相对富集区。

Soil moisture can reflect occurrence data of shallow underground water at given condition. In a research on ＂new ＂technique applications of groundwater exploration in water deficient regions at the western of Liaoning province＂, Landsat7 ETM image was used as data source of drought period in this paper,multi-band data were used by analysis functional module in image processing software, for Principal component analysis, Stretch data, Enhancements, Density slice,etc. The soil moisture at mountainous area has been effectively identified and interpretation results weve synthetically analyzed, which combine physiognomy, structure, lithology, etc. Investigation showed that relative enriching section of shallow groundwater can be delineated on the image.