摘要
地热能是地球内部一种环保、可再生的地下热能,热量传导至地表会引起地表温度异常。然而,地表温度受到太阳辐射、周期性变化和降水等诸多因素的影响,可能掩盖由地热引起的温度异常。为了解决这些问题并突出地热引起的地表温度异常,文中提出了一种利用Google Earth Engine(GEE)高效快速计算多时相冬季平均地表温度并提取地热异常的方法,并对理塘盆地的地热资源分布特征进行了研究。该方法综合运用多时相冬季平均地表温度对比分析、水体剔除、地形效应抑制等手段来提取地热异常区。结果表明,文中确定的8处地热异常区与断裂构造关系密切,且区内水资源丰富,具备地热资源形成的良好条件,可以作为未来地热勘探的重点方向。研究认为,在高原恶劣环境中,利用多时相平均冬季地表温度识别地热异常是一种高效且经济的方法。
Geothermal energy is an environmentally friendly,renewable underground thermal energy inside the earth.The conduction of heat to the surface will cause land surface temperature anomalies.However,land surface temperature is affected by many factors such as solar radiation,cyclic changes and precipitation,which may mask temperature anomalies caused by geothermal heat.In order to solve these problems and highlight the land surface temperature anomalies caused by geothermal heat,this paper proposes a method to efficiently and quickly calculate the multi-temporal winter average land surface temperature and extract geothermal anomalies using Google Earth Engine(GEE),and studies the distribution characteristics of geothermal resources in Litang Basin.This method comprehensively uses multi-temporal winter average land surface temperature comparative analysis,water body removal,terrain effect suppression and other means to extract geothermal anomaly zones.The results indicate that eight geothermal anomaly zones are closely associated with fault structures.Moreover,these zones have abundant water resources and favorable conditions for the formation of geothermal resources,thus serving as the key direction of geothermal exploration in the future.Meanwhile,this study suggests that using multi-temporal average winter land surface temperatures to identify geothermal anomalies is an efficient and economical method in the harsh environment of the plateau.
作者
屈泽伟
李枭
胡亚召
姜光政
左银辉
徐小青
马亚强
QU Zewei;LI Xiao;HU Yazhao;JIANG Guangzheng;ZUO Yinhui;XU Xiaoqing;MA Yaqiang(Sichuan Institute of Geological Engineering Investigation Group Co.,Ltd.,Chengdu 610072,China;College of Energy,Chengdu University of Technology,Chengdu 610059,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China)
出处
《断块油气田》
CAS
CSCD
北大核心
2024年第4期652-660,共9页
Fault-Block Oil & Gas Field
基金
四川省自然资源厅科研项目“理塘盆地中高温地热资源成矿机理及开发利用研究”(KJ-2023-005)。
关键词
地热资源
多时相热红外遥感
地表温度
GEE
理塘盆地
geothermal resources
multi-temporal thermal infrared remote sensing
land surface temperature
GEE
Litang Basin
