【摘要】 精确地提取出内陆水库水位高程数据以及分析其变化特征，对气候和生态环境变化、水资源管理等方面的研究具有重要的意义。利用ICESat卫星2003年10月至2009年4月期间的全球地表测高数据与ICESat-2卫星2018年11月至2022年6月期间的全球内陆水体高程数据，对黄河流域龙羊峡、刘家峡、三门峡、小浪底水库多期历史水位变化数据进行提取，并结合水文站实测数据对其准确度加以检验。结果显示：龙羊峡、刘家峡、三门峡与小浪底水库在水位变化上相互调节水位，确保了水库的安全运行和水资源的合理利用；通过与实测水位对比分析，龙羊峡、小浪底水库ICESat卫星测量水位与实测水位相关性系数分别为0.996、0.997,均方根误差分别为0.323 m、0.456 7 m,平均误差分别为0.195 m、0.248 m;龙羊峡、刘家峡、三门峡以及小浪底水库ICESat-2卫星测量水位与实测水位相关系数分别为0.996、0.987、0.977、0.999,其均方根误差分别为0.630 8 m、0.960 6 m、0.707 7 m、0.135 4 m,平均误差分别为0.504 6 m、0.768 4 m、0.566 1 m、0.11 m。此外，ICESat数据在一定程度上弥补了数据的缺失，表明全球地表测高数据与全球内陆水体高程数据在内陆水体水位变化监测方面具有很高的可行性。更多还原

【Abstract】 The precise extraction of inland reservoir water level elevation data and the analysis of its changing characteristics are of significant importance for research on climate, ecological environment change, and water resources management. This study aims to utilize the global land surface altimetry data from the ICESat satellite during the period from October 2003 to April 2009 and the global inland water surface altitude data from the ICESat-2 satellite during the period from November 2018 to June 2022 to extract multi-period historical water level change data for the Longyangxia, Liujiaxia, Sanmenxia, and Xiaolangdi reservoirs in the Yellow River Basin. Additionally, the accuracy of the extracted data is validated using hydrological station measurements. The results show that the water levels of Longyangxia, Liujiaxia, Sanmenxia, and Xiaolangdi reservoirs are mutually regulated, ensuring the safe operation of the reservoirs and the rational utilization of water resources. The comparison analysis with the measured water levels indicates that the correlation coefficients between the ICESat satellite-measured water levels and the measured water levels for Longyangxia and Xiaolangdi reservoirs are 0.996 and 0.997,respectively, with root mean square errors of 0.323 m and 0.456 7 m, and average errors of 0.195 m and 0.248 m. For Longyangxia, Liujiaxia, Sanmenxia, and Xiaolangdi reservoirs, the correlation coefficients between the ICESat-2 satellite-measured water levels and the measured water levels are 0.996,0.987,0.977,and 0.999,respectively, with root mean square errors of 0.630 8 m, 0.960 6 m, 0.707 7 m, and 0.135 4 m, and average errors of 0.504 6 m, 0.768 4 m, 0.566 1 m, and 0.11 m. Moreover, the ICESat data partially compensates for data gaps, demonstrating the high feasibility of using global land surface altimetry data and global inland water surface altitude data for monitoring inland water level changes.更多还原