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Remote Sensing for Natural Resources    2025, Vol. 37 Issue (1) : 152-160     DOI: 10.6046/zrzyyg.2023234
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A study of temperature distribution in the sea area around Qinshan Nuclear Power Plant based on satellite remote sensing
SHI Haigang1,2(), LIANG Chunli1,2(), XUE Qing1,2, ZHANG En1,2, ZHANG Xinyi1,2, ZHANG Jianyong1,2, ZHANG Chunlei1, CHENG Xu1,2
1. Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002, China
2. Hebei Key Laboratory of Airborne Survey and Remote Sensing Technology, Shijiazhuang 050002, China
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Abstract  

This study investigated the temperature distribution in the sea area around the Qinshan Nuclear Power Plant using Landsat thermal infrared remote sensing data. The results indicate a strong correlation between the inversion results of temperature and the measured data, suggesting reliable inversion results. Before the operation of the nuclear power plant, the surrounding sea area exhibited relatively uniform temperature, with no significant temperature difference except for natural warming. Furthermore, the temperature along the coast remained almost unchanged in the north-south direction and displayed slight temperature gradients in the east-west direction, with temperature variation not exceeding 0.6 ℃ within 10 km from the coast. After the operation of the nuclear power, the surrounding sea area showed temperature differentiation. The distribution characteristic of thermal discharge was closely related to tides and seasons. In the same season, the increased amplitude of the temperature during ebb tides generally exceeded that during flood tide. Under the same tidal condition, the increased amplitude of the temperature in summer typically exceeded that in winter. At a certain water intake of the first plant, the surface seawater manifested a temperature rise of over 1.0 ℃ during flood tide. Landsat data generally meet the demand for research on temperature distribution in the surrounding sea area of the Qinshan Nuclear Power Plant, and the distribution of thermal discharge under specific tidal conditions can be investigated using aerial remote sensing monitoring.
Keywords Qinshan Nuclear Power Plant      thermal discharge      temperature inversion      remote sensing monitoring      tide     
ZTFLH:  TP79  
Issue Date: 17 February 2025
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Haigang SHI
Chunli LIANG
Qing XUE
En ZHANG
Xinyi ZHANG
Jianyong ZHANG
Chunlei ZHANG
Xu CHENG
Cite this article:   
Haigang SHI,Chunli LIANG,Qing XUE, et al. A study of temperature distribution in the sea area around Qinshan Nuclear Power Plant based on satellite remote sensing[J]. Remote Sensing for Natural Resources, 2025, 37(1): 152-160.
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https://www.gtzyyg.com/EN/10.6046/zrzyyg.2023234     OR     https://www.gtzyyg.com/EN/Y2025/V37/I1/152
Fig.1  Location of the study area
数据类型 有效载荷 地面幅宽/km 空间分辨率/m 重访周期/d 过境时间及运行工况 季节及潮态
Landsat5 B6 185 120 16 1986-01-23 09:52 未运行
1986-08-19 09:46 未运行		 冬季涨潮
夏季落潮
Landsat8 B10 185 100 16 2020-12-22 10:25 9台机组运行
2019-07-29 10:25 9台机组运行		 冬季落潮
夏季涨潮
Landsat9 B10 185 100 16 2022-01-02 10:15 9台机组运行
2022-08-14 10:25 9台机组运行		 冬季涨潮
夏季落潮
Tab.1  Overview of thermal infrared data of Qinshan nuclear power plant in different time
Fig.2  Distribution of sea surface temperature on Jan. 2, 2022
Fig.3  Linear fitting and residual point map of measured values and inverted SST values at sea on Jan. 2, 2022
Fig.4  Thermal infrared temperature of the sea region near Qinshan nuclear power plant
Fig.5-1  Thermal infrared temperature of the sea region near Qinshan nuclear power plant at different periods
Fig.5-2  Thermal infrared temperature of the sea region near Qinshan nuclear power plant at different periods
时相 温度范围 排水口温度 取水口温度
方家山电厂 一厂 三厂 二厂 一厂及
方家山电厂		 三厂 二厂南1 二厂南2
2019-07-29 27.5~35.0 31.7 33.3 33.3 34.8 31.9 29.8 29.8 29.8
2020-12-22 8.5~15.3 14.4 15.3 12.5 12.2 10.5 11.7 10.3 10.1
2022-01-02 8.5~12.0 11.2 11.2 11.9 11.9 10.6 10.2 10.2 10.2
2022-08-14 31.0~38.0 37.8 37.8 37.5 38.0 36.3 33.9 33.8 32.4
Tab.2  Statistics of temperature distribution in the sea area around Qinshan nuclear power plant at different time (℃)
Fig.6  Temperature rise map of the surrounding sea area after the operation of Qinshan nuclear power plant
Fig.7  Contrast chart of temperature rising area at different time
Fig.8  Interpretation of the coastlines changes in Hangzhou Bay at different time
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