【作者】 张中言；

【导师】 刘登忠；

【作者基本信息】 成都理工大学 ， 地图学与地理信息系统， 2010， 硕士

【摘要】 随着经济的不断发展,传统的一次性能源如煤炭、石油等出现了全球性的短缺。地热资源作为一种廉价、清洁的绿色新能源,己被人们日益关注。因而大力开发利用地热资源,对于调整能源供应结构、缓解能源供应压力、保障能源供应安全具有重要的作用。在地热资源的勘查中,由于热红外遥感反演技术具有快速、经济、大面积研究热量资源和热场分布变化的优势,己日益成为地热资源探测与调查方面的一种新趋势。本文选取西藏羊八井地区作为运用热红外反演方法探测地热资源的研究区。具体内容如下:(1)收集地表温度反演有关资料,确定研究区的反演算法,利用气象站的水汽含量和近地面气温来确定大气透射率和大气平均作用温度;(2)对研究区影像进行大气校正,通过归一化植被指数的方法求解地表比辐射率,将估计的大气透射率、大气平均作用温度和地表比辐射率值代入确定的反演算法,进行地表温度反演并分析反演结果;(3)根据Landsat 5 TM影像的特点和图像特征选取对研究最有利的TM影像数据,然后对图像进行校正、镶嵌、增强、融合等处理,提取对地热研究最有利的地质信息。(4)结合研究区解译出的活动断层特征与地表温度异常图,确定研究区控制地热的主要构造。(5)通过研究区主要地热构造与地表温度异常分析,根据区域地热背景确定的地热异常集中区。研究表明,羊八井地区的地热异常与活动断层有关,主要集中于北东向与相应的北西向活动断层的交叉复合部位,地热异常的分布受活动断层控制。同时表明,单窗算法作为热红外遥感反演方法的一种行之有效的地表温度反演算法。它所取得的热图像资料具有直观、形象、速度快、不受交通条件限制等许多优点,在探测地热异常区,尤其对高原无人区的地热异常检测,有着重要的意义。更多还原

【Abstract】 As the economical rapid development, the traditional energy like coal, petroleum and so on is in short at global scale. As one kind of inexpensive、clean green new energy, terrestrial heat resource has been paid greatattention day by day by the people. So full exploitation of terrestrial heat resource plays a Important role to adjust energy supply structure and alleviate the energy supply pressure. Because of its fast, economical, big area research to the heat resources and the hot field distribution change, thermal infrared inversion of remote sensing has become the Terrestrial heat resource survey and the investigation aspect one kind of new tendency day by day.This article selects the Yangbajing Region of Tibet as the research area to apply thermal infrared inversion of remote sensing technique survey heat resource. As follows:(1) Collect the information of land surface temperature, then determine inversion algorithm of research area and atmospheric transmission ratio and mean temperature by using vapor content of weather station and near ground temperature;(2) Carry on atmospheric correction of images of study area, acquire LSE through the method of NDVI, input the estimate atmospheric transmission, mean temperature and surface ratio radiance to the decided inverse ground temperature and analyze the results.(3) According to the characteristics of Landsat 5 TM images and image feature, select TM image data of the most favorabl Study,Then,through remote sensing images of the best band combinations, geometric correction, image enhancement, such as pre-processing , Extraction of this study the most favorable geological information.(4) Interpretation of a combination of an active fault zone characteristics and surface temperature anomaly map of the study area to determine the main structural control of geothermal.(5) Study area, mainly through structural and thermal analysis of surface temperature anomalies, the background of regional geothermal identified anomaly geothermal focus areas.The research shows that geothermal anomaly of Yangbajain region and active faults were mainly concentrated in North East to the north west and the corresponding cross-composite parts of active faults, geothermal anomalies in the control by the active faults. Also shows that the single-window algorithm as a method of thermal infrared inversion of remote sensing is an effective surface temperature inversion. Thermal image data of its obtained has visual, image, speed, free from traffic conditions, and many other advantages, in particular, no man’s land on the plateau geothermal anomaly detection, has an important significance .更多还原