基于卫星和无人机的后石电厂温排水分布研究

Distribution of thermal water around Houshi Power Plant based on Landsat 8 and UVA study

本研究采用Landsat 8热红外数据反演后石电厂营运期的排水口区域水体温度,并尝试采用无人机携带热红外传感器对该区域的水温分布细节特征进行遥感探测。结果表明,后石电厂排水口区域水温自北向南递减,温水团自排水口排出后沿岸南下,向南扩散约3500 m,东西扩散约1000 m。利用Pix4Dmapper软件对无人机航拍热红外照片进行拼接并绘制排水口区域温度剖面图可知,后石电厂排水口南侧300~500 m处的水温呈现西岸较低、东岸较高的特点,温水团从排水口排出后并不是均匀向南扩散,而是先沿东岸向南扩散,然后部分从东岸向西扩散后再向南扩散。

In this study,Landsat 8 thermal infrared data was used to retrieve the water temperature around the outlet of Houshi Power Plant during the running period.Besides,an unmanned aerial vehicle(UAV)with thermal infrared sensors was employed to detect the details of thermal water distribution.The results show that the water temperature in the drainage areas of Houshi Power Plant decreases from the north to south,and the warm water flows southward along the coast after discharge.It spreads about 3500 m southward and about 1000 m sideward to the east and west.With the help of Pix4Dmapper software the thermal infrared images of UAV and the temperature profile of the areas covered by warm water are made.It shows that the water temperature at 300-500 m south of the outlet is lower in the west bank and higher in the east bank.The warm water does not spread evenly southward after discharged and it firstly spreads to the south along the east coast before it divertes to the west and then to the south.