水资源与水工程学报2025，Vol.36Issue(6)：68-76,9.DOI:10.11705/j.issn.1672-643X.2025.06.09
联合Sentinel-3 A和ICESat-2测高数据的五强溪水库水位变化监测与分析
Monitoring and analyzing Wuqiangxi Reservoir water level changes based on the integration of Sentinel-3A and ICESat-2 altimetry data
摘要
Abstract
Monitoring reservoir water level changes based on multi-source remote sensing data aligns with the advancement of"smart water conservancy",which can provide a technical support for water resources supervision.Taking Wuqiangxi Reservoir,the second largest reservoir in Hunan Province,as a case study,this research integrated Sentinel-3A and ICESat-2 satellite altimetry data to construct a water level time series from 2016 to 2022.Accuracy assessment was performed based on measured water levels dur-ing 2017-2022,and the characteristics of water level variations were analyzed based on meteorological data.Results indicated a strong correlation between the altimetric water levels and the measured data,with the coefficient of determination reaching 0.99,the correlation coefficient 1.00,the root mean squared error 0.29 m,and the mean absolute error 0.18 m.From 2016 to 2022,the reservoir water level underwent significant seasonal changes,which continuously decreased from February to June,and rose back again rapidly from June to August annually.The water level either lagged behind changes in precipi-tation or temperature by approximately 4 months,or responded in advance to precipitation by about 6 months and to temperature by about 2 months.Satellite altimetry data effectively captured the dynamic process of water level fluctuations,highlighting the reservoir's active regulatory role in flood control and drought relief.关键词
卫星测高数据/气象数据/水位变化/精度评价/防汛抗旱/五强溪水库/沅江流域Key words
satellite altimetry data/meteorological data/water level change/accuracy assessment/flood control and drought relief/Wuqiangxi Reservoir/the Yuanjiang River Basin分类
建筑与水利引用本文复制引用
黄志勇,龙彩欣,隆院男,邓斌,金涛勇,潘云..联合Sentinel-3 A和ICESat-2测高数据的五强溪水库水位变化监测与分析[J].水资源与水工程学报,2025,36(6):68-76,9.基金项目
国家自然科学基金项目(42301404) （42301404）
湖南省自然科学基金项目(2022JJ40480) （2022JJ40480）
湖南省水利科技项目(XSKJ2024064-27) （XSKJ2024064-27）
长沙理工大学专业学位研究生"实践创新与创业能力提升计划"项目(CLSJCX24030) （CLSJCX24030）
