核电温排水基准温度星地协同提取与分析——以宁德为例  

Satellite-marine synergistic extraction and analysis of reference temperature of thermal plume from nuclear power by taking Ningde as an example

作　　者：王雅萍[1] 马秀秀 李家国 朱利 李凯云 WANG Yaping;MA Xiuxiu;LI Jiaguo;ZHU Li;LI Kaiyun(School of Surveying and Land Information Engineering,Henan Polytechnic University,Jiaozuo 454003,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;Ministry of Ecology and Environment Center for Satellite Application on Ecology and Environment,Beijing 100094,China)

机构地区：[1]河南理工大学测绘与国土信息工程学院,焦作454003 [2]中国科学院空天信息创新研究院,北京100094 [3]生态环境部卫星环境应用中心,北京100094

出　　处：《遥感学报》2023年第8期1899-1913,共15页NATIONAL REMOTE SENSING BULLETIN

基　　金：国家自然科学基金(编号:41971391);河南理工大学博士基金(编号:B2015-22)。

摘　　要：核电在中国正式进入积极推进建设时期,而核电温排水对周边水域环境的影响监测与评估不仅为核电机组的规划、建设、运行等过程提供重要决策依据,同时也对海域水质和生态保护具有重要价值。客观精准的基准温度提取是温排水热污染遥感监测与评估的基础,本文以宁德核电站星地同步监测为例,通过对72个离散测量点位温度垂直剖面特征进行分析,将其划分为7种不同剖面形态,从中归纳出稳定温度点,并据此构建基准温度星地协同提取“实测稳定温度法”,解决以往地面测量监测和热红外遥感监测在实施过程中基准温度计算相互独立、未进行星地协同处理,致使监测结果可比较性相对较弱等问题。研究结果表明,基于实测稳定温度法提取得到的温排水星地同步监测结果从分布范围、强度到扩散趋势最为一致,提取效果明显优于其他基准温度提取方法;实测稳定温度法监测星地面积差异最小,为1.53 km^(2),相对于其他方法精度提高了4—10倍,而多点平均温度法(近岸多点)、取水口温度法、邻近区域温度替代法、校正的海湾平均法、半径区域平均温度法(5 km半径)、温升混合区最低温度法的星地面积差异分别为11.95 km^(2)、11.12 km^(2)、7.69 km^(2)、6.61 km^(2)、8.46 km^(2)和14.93 km^(2)。实测稳定温度法能够更客观、准确的提取核电站温排水热污染分布范围和大小,在核电温排水热污染监测中具有重要的应用价值。Nuclear power is actively used in China to promote construction projects.Monitoring and evaluating the impact of thermal plume from nuclear power on the surrounding water environment not only provide important decision-making basis for the planning,construction,and operation of nuclear-power-generating units but also hold significant value for marine water quality and ecological protection.An objective and accurate reference temperature extraction serves as the basis for the remote sensing monitoring and evaluation of the thermal pollution of the thermal plume.In this paper,the satellite-marine synergistic monitoring of the Ningde nudear power plant is taken as an example.By analyzing the vertical profile characteristics of 72 discrete temperature measurement points,it is divided into 7 profile morphologies,from which the stable temperature points are summarized.A satellite-marine synergistic method for extracting the reference temperature,hereinafter referred to as the measured stable temperature method,is then built based on these morphologies.This method can solve some problems associated with the reference temperature settings during the implementation of marine measurement monitoring and thermal infrared remote sensing monitoring,such as the independence of the reference temperature calculation and the lack of satellite-marine synergistic processing,both of which reduce the comparability of monitoring results.Results of the satellite-marine synchronous monitoring from the thermal plume extracted by the measured stable temperature method show the highest consistency with the distribution range and intensity-to-diffusion trend,and the extraction effect of this method is significantly better than those of other reference temperature extraction methods.The proposed method also achieves the smallest difference of 1.53 km^(2)in the satellite-marine monitoring area and reports a 4-to 10-fold improvement in its accuracy compared with other methods.By comparison,the satellite-marine area differences of the multi-poin

关 键 词：温排水 星地协同 GF-5 基准温度 热污染 遥感 

分 类 号：P2[天文地球—测绘科学与技术]