论文部分内容阅读
利用航天飞机3号SIR-C数据对额济纳旗北部中-蒙交界处浅层地下水的分布与形成原因进行研究,分析了在SIR-C图像上呈亮条带的机理。研究得出如下结论:（1）浅层地下水区能被SIR-C图像特别是L-HV以及L-HH极化以亮黄色强烈显示,这是与该带地下水位浅、植被长势好、植被固沙形成沙垄等因素造成雷达波体散射以及后向散射强烈所致;（2）在研究区的中-蒙交界段正是地形由缓向陡转折处,这是与拉张正断层原因导致中方上盘相对下降,并在此处具备储水条件有关;（3）雷达遥感能敏感地探测到微地形的变化,可很好地反映地表植被分布和地表及次地表水分,使其在干旱区应用研究具有极大的优势,此研究可能为西部干旱区寻找浅层地下水提供一条快捷、实用的方法。
Based on SIR-C data of Space Shuttle No.3, the distribution and formation causes of shallow groundwater in the northern Meso-Mongolian junction of Ejin Banner were studied, and the mechanism of bright bands on SIR-C images was analyzed. The conclusions drawn from the study are as follows: (1) Shallow groundwater areas can be strongly illuminated by SIR-C images, especially L-HV and L-HH polarization, in bright yellow, which is shallow with the groundwater table, The formation of sandy ridge by sand formation and other factors caused by radar wave scattering and backscattering caused by strong; (2) in the study area of the Mongolian junction is the terrain from steep to sharp turning point, which is the cause of tension and normal faults (3) Radar remote sensing can sensitively detect the change of microtopography, which can well reflect the distribution of surface vegetation and the surface and sub-surface water, making it more suitable for drought The study of area application has great advantages. This study may provide a quick and practical method for finding shallow groundwater in the arid area of western China.