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利用遥感和现场数据分析人类发热对地下水的影响
Surya Deb Chakraborty1, M Sami Zitouni1, Saeed Al Mansoori2
1College of Engineering and Information Technology, University of Dubai, Dubai 14143, United Arab Emirates.
Sensors (Basel, Switzerland)
|October 29, 2025
概括
班加罗尔的城市扩张显著增加了不透气的表面,导致土地表面温度 (LST) 和热流的升高. 这种城市供暖影响地下水温度 (GWT),强调了可持续城市规划的必要性.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 城市规划 城市规划
背景情况:
- 城市化导致越来越多的不透气表面,取代了自然景观,改变了热力学.
- 城市热量转移影响地下水层,影响地下水温度.
研究的目的:
- 在班加罗尔市绘制土地使用/土地覆盖 (LULC),土地表面温度 (LST) 和人为热量流 (Has) 变化的地图.
- 通过实地测量LST和地下水温度 (GWT) 来验证卫星数据.
- 分析城市扩张对热量指标的影响及其与GWT的相关性.
主要方法:
- 利用Landsat光学和热卫星数据用于LULC,LST和Has绘制1999年至2017年的地图.
- 用于现场基于传感器的测量用于LST和GWT验证.
- 在Has,LST和GWT之间进行了相关性分析.
主要成果:
- 建筑面积从7.61%增加到28.78%,以显著的LST增长,特别是在以前的绿色区域 (~6°C).
- 人为热流量大幅增加 (超过65W/m2).
- 在现场GWT和Has (R2 = 0.83) 和LST (R2 = 0.78) 之间发现了强烈的相关性.
结论:
- 班加罗尔的城市扩张对LST,Has和GWT产生了重大影响.
- 来自卫星的城市热量指标可用于可持续的土地利用规划和城市生态系统保护.
- 高对线性允许定期监测热变化,使用Landsat数据制定政策.
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