杨雄丹,李国元,王佩贤,常晓涛,么嘉棋

• 1:辽宁工程技术大学测绘与地理科学学院
• 2:自然资源部国土卫星遥感应用中心

摘要(Abstract)：

为了准确反映全球气候的不断变化给湖泊湿地生态系统带来长时间水位、面积和蓄水量变化,针对星载激光测高数据筛选条件不足引起湖泊水位不准确的问题,提出了基于IQR湖陆分界多准则约束的激光点筛选方法。以青海湖为研究对象,利用ICESat/GLAS激光测高数据和30 m分辨率的Landsat遥感影像数据,研究分析青海湖2003到2009年间的湖泊水位、面积和蓄水量变化。结果表明:青海湖的年均水位、面积和蓄水量分别以0.096 m/a、12.915 km~2/a和0.088 km~3/a在升高,其中水位年均变化率相对误差仅为4.95%;2009年和2003年相比,湖泊水位增加了0.437 m,面积增加了74.128 km~2,相应的蓄水量增加了2.81 km~3,并与水位站实测结果基本一致。该方法有效实现了粗差探测识别问题,避免了粗差对高程序列的影响,对后续国产激光卫星在湖泊中的应用具有参考价值。

关键词(KeyWords)： 卫星激光测高;青海湖;水位变化;ICESat/GLAS;Landsat

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41871382,41601505);; 高分辨率对地观测系统重大专项应用共性关键技术(11-Y20A13-9001-17/18)

作者(Author): 杨雄丹,李国元,王佩贤,常晓涛,么嘉棋

DOI: 10.16251/j.cnki.1009-2307.2020.05.012

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