常翔宇,蔡宇,夏文韬,柯长青

• 1:南京大学地理与海洋科学学院

摘要(Abstract)：

针对传统的通过水位站监测湖泊水位变化受自然条件和时空等因素的影响以及卫星测高技术的发展,该文提出了利用Cryosat-2测高数据对内陆湖泊水位变化进行研究。以太湖为例分析2011年1月—2014年12月的水位变化,并应用水位实测数据对Level-2 GDR数据所采用的3种波形重跟踪算法提取的湖面高进行精度评价以及季节性变化的对比。结果表明,4年来太湖平均水位变化为0.283 m,测高结果与实测数据变化基本一致,最高值均出现在2011年9月,利用卫星测高数据监测湖泊水位变化可信度较高;对于GDR产品中的3种重跟踪算法,Refined OCOG算法更适合水位变化的提取,有最高的相关系数(0.543)、较低的均方根误差(1.282 m)和最低平均绝对误差(0.260 m);太湖的秋季水位最高,夏季其次,冬季再次,春季最低,且春夏两季水位变化提取的均方根误差最低可达到0.215 m和0.067 m。

关键词(KeyWords)： 卫星测高;Cryosat-2;重跟踪;湖泊水位变化;太湖

Abstract:

Keywords:

基金项目(Foundation): 江苏省基础研究计划(自然科学基金)项目(BK20180343)

作者(Author): 常翔宇,蔡宇,夏文韬,柯长青

DOI: 10.16251/j.cnki.1009-2307.2020.10.013

参考文献(References)：

• [1] 于革.中国湖泊演变与古气候动力学研究[M].北京:气象出版社,2001:17-19.(YU Ge.Study on lacustrine evolution and paleoclimate dynamics in China[M].Beijing:China Meteorological Press,2001:17-19.)
• [2] 王广运,王海瑛,许国昌.卫星测高原理[M].北京:科学出版社,1995:1-10.(WANG Guangyun,WANG Haiying,XU Guochang.Principle of satellite altimetry[M].Beijing:Science Press,1995:1-10.)
• [3] 高永刚,郭金运,岳建平.卫星测高在陆地湖泊水位变化监测中的应用[J].测绘科学,2008,33(6):73-75,29.(GAO Yonggang,GUO Jinyun,YUE Jianping.Lake level variations measurement with satellite altimetry[J].Science of Surveying and Mapping,2008,33(6):73-75,29.)
• [4] BIRKETT C.The contribution of TOPEX/POSEIDON to the global monitoring of climatically sensitive lakes[J].Journal of Geophysical Research(Oceans),1995,100(C12):25179-25204.
• [5] CRéTAUX J F,BIRKETT C.Lake studies from satellite radar altimetry[J].Comptes Rendus Geoscience,2006,338(14):1098-1112.
• [6] SONG C,HUANG B,KE L.Inter-annual changes of alpine inland lake water storage on the Tibetan Plateau:detection and analysis by integrating satellite altimetry and optical imagery[J].Hydrological Processes,2014,28(4):2411-2418.
• [7] BIRKETT C M.Radar altimetry:a new concept in monitoring lake level changes[J].Transactions American Geophysical Union,1994,75(24):273-275.
• [8] BIRKETT C.The global remote sensing of lakes,wetlands and rivers for hydrological and climate research[C]//Geoscience and Remote Sensing Symposium.[S.l.]:[s.n.],1995:1979-1981.
• [9] FRAPPART F,CALMANT S,CAUHOPE M,et al.Preliminary results of ENVISAT RA-2-derived water levels validation over the Amazon basin[J].Remote Sensing of Environment,2006,100(2):252-264.
• [10] BECKER M,LLOVEL W,CAZENAVE A,et a1.Recent hydrological behavior of the East African great lakes region inferred from GRACE,satellite altimetry and rainfall observations[J].Comptes Rendus-Geoscience,2010,342(3):223-233.
• [11] 汪海洪,罗志才,杨元德,等.基于波形分类的近海卫星测高数据自适应重跟踪方法[J].测绘学报,2012,41(5):729-734.(WANG Haihong,LUO Zhicai,YANG Yuande,et al.An adaptive retracking method for coastal altimeter data based on waveform classification[J].Acta Geodaetica et Cartographica Sinica,2012,41(5):729-734.)
• [12] 张鑫,吴艳红,张鑫.基于多源卫星测高数据的扎日南木错水位动态变化(1992—2012年)[J].自然资源学报,2015,30(7):1153-1162.(ZHANG Xin,WU Yanhong,ZHANG Xin.Zhari Namco water level change detecton using multi-satellite altimetric data during 1992—2012[J].Journal of Natural Resources,2015,30(7):1153-1162.)
• [13] 李建成,褚永海,姜卫平,等.利用卫星测高资料监测长江中下游湖泊水位变化[J].武汉大学学报(信息科学版),2007,32(2):144-147.(LI Jiancheng,CHU Yonghai,JIANG Weiping,et al.Monitoring level fluctuation of lakes in Yangtze River Basin by altimetry[J].Geomatics and Information Science of Wuhan University,2007,32(2):144-147.)
• [14] WINGHAM D,FRANCIS C,BAKER S,et al.CryoSat:a mission to determine the fluctuations in Earth’s land and marine ice fields[J].Advances in Space Research,2006,37(4):841-871.
• [15] RANEY R K.The delay/Doppler radar altimeter[J].IEEE Transactions on Geoscience and Remote Sensing,1998,36(5):1578-1588.
• [16] BAUP F,FRAPPART F,MAUBANT J.Combining high-resolution satellite images and altimetry to estimate the volume of small lakes[J].Hydrology and Earth System Sciences,2014,18(5):2007-2020.
• [17] BOUFFARD J.CryoSat level-2 product evolutions and quality improvements in baseline C[J/OL].[2019-05-19].https://earth.esa.int/web/guest/document-library/browse-document-library/-/article/cryosat-level-2-product-evolutions-and-quality-improvements-inbaseline-c.
• [18] 魏鑫,李斐,张胜凯,等.CryoSat-2卫星测高计划及其应用[J].极地研究,2015,27(4):446-453.(WEI Xin,LI Fei,ZHANG Shengkai,et al.Cryosat-2 satellite altimetry and it’s application[J].Chinese Journal of Polar Research,2015,27(4):446-453.)
• [19] 赵云,廖静娟,沈国状,等.卫星测高数据监测青海湖水位变化[J].遥感学报,2017,21(4):633-644.(ZHAO Yun,LIAO Jingjuan,SHEN Guozhuang,et al.Monitoring the water level changes in Qinghai Lake with satellite altimetry data[J].Journal of Remote Sensing,2017,21(4):633-644.)