遥感技术在塔什库尔干谷地地热资源调查中的应用  

Application of Remote Sensing in Geothermal Resources Investigation in Tashkurgan Valley

作　　者：于浩[1] 史杰[2] 阮传明 Yu hao;Shi jie;Ruan Chuanmin(Information Center of Geology and Mineral Exploration and Development Bureau of Xinjiang Uygur Autonomous Region,Urumqi,Xinjiang,830000,China;The Second Hydrogeological Engineering Geological Brigade of Xinjiang Bureau of Geology and Mineral Resources,Changji,Xinjiang,831100,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局信息中心,新疆乌鲁木齐830000 [2]新疆维吾尔自治区地质矿产勘查开发局第二水文工程地质大队,新疆昌吉831100

出　　处：《新疆地质》2022年第3期441-444,共4页Xinjiang Geology

基　　金：新疆地矿局自然资源卫星应用技术分中心建设及应用示范项目(XGMB202255)资助。

摘　　要：冬至前后是热红外数据进行地热异常信息提取的最佳时间窗口,利用多期Landsat8 OLI/TIRS遥感数据计算地表温度离散度,当离散度越低时,地球深部热源产生的“恒温作用”越明显,从而提高地热异常信息的准确性。以塔什库尔干断裂为主干,遥感解译提取研究区4条次级断裂,这些断裂构造为地热资源的形成、储存、运移等提供了必要的空间条件。结果表明,遥感地热异常的分布受断裂构造控制,均处于断裂或断裂交汇处,提取的4处地热异常体与实地调查情况吻合,另一处新发现地热异常有待进一步验证。The best time window for extracting geothermal anomaly information from thermal infrared data is around the winter solstice.The surface temperature dispersion is calculated by using multi-phase landsat8 oli/tirs remote sensing data.When the dispersion is lower,the"constant temperature effect"produced by the earth’s deep heat source is more obvious,so as to improve the accuracy of geothermal anomaly information.Taking Tashkurgan fault as the trunk,remote sensing interpretation and extraction of four secondary faults in the study area provide space and power source for intrusion of rock mass and formation of structural fractures,and play a role in connection,migration and storage of deep geothermal fluid.The results show that the distribution of remote sensing geothermal anomaly is controlled by fault structure,and they are all located at the intersection of faults or faults.The four geothermal anomalies found are consistent with the field investigation,and another newly found geothermal anomaly needs to be further verified.

关 键 词：塔什库尔干谷地 热红外遥感 Landsat8 地热 

分 类 号：P627[天文地球—地质矿产勘探] P314[天文地球—地质学]