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根据从遥感数据中得出的陆地表面温度来确定地热潜力
Jianyu Liu1, Jiangqin Chao1,2, Zhifang Zhao3,4,5,6
1Institute of International Rivers and Eco-Security, Yunnan University, Kunming, 650500, China.
Environmental science and pollution research international
|September 14, 2023
概括
使用热红外遥感识别地热潜在区域的识别至关重要. 这项研究在云南西部的龙阳发现了三个有前途的地热异常,单窗算法在表面温度反转方面被证明是最准确的.
科学领域:
- 地质物理学 地质物理学
- 遥感 遥感 遥感 遥感
- 地热能源勘探 地热能源勘探
背景情况:
- 热红外遥感和表面温度反转算法是识别地热潜力的关键.
- 云南西部东方龙阳地区以地热资源闻名,但其分布不清楚.
研究的目的:
- 为了确定东方龙阳的高温异常区域,表明地热潜力.
- 评估和选择研究区域的最佳表面温度反转算法.
- 使用多视图遥感方法划定地热潜在区域.
主要方法:
- 利用了Landsat-8 TIRS数据和四种表面温度反转算法:单窗,单通道,Du分割窗 (SWD) 和Jiménez-Muñoz分割窗 (SWJ).
- 交叉验证的反转结果与中等分辨率成像光谱辐射仪陆地表面温度 (MODIS LST) 数据.
- 采用多视图遥感方法,结合值,断裂结构缓冲器和日间时间数据分析,以改进热异常区域.
主要成果:
- 单窗口算法展示了最高的准确性 (皮尔森系数为0.77),使其适合在长阳的表面温度反转.
- 确定了三个地热异常 (A,B和C),其中A和C异常显示出更大的热信号和显著的发展潜力.
- 所有发现的异常都通过现有的温泉点进行了验证.
结论:
- 建议使用单窗口算法,以便在龙阳地区准确地进行表面温度反转.
- 区域A和C具有重要的地热开发潜力,得到了经过验证的温泉事件的支持.
- 这项研究提供了一个强大的方法框架,用于在类似地区使用遥感进行地热资源勘探.
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