Jason-2卫星测高数据在陆地水域水位变化监测中的应用——以南洞庭湖为例

Application of Jason-2 Altimetry Data in Monitoring of Continental WaterLevel Fluctuations——A Case Study in South Dongting Lake,China

论文在对Jason-2/OSTM GDRs数据特点、湖泊水位计算原理、测高数据编辑与处理过程进行详细阐述的基础上,以地处长江中游的南洞庭湖区为监测实例,对Jason-2卫星测高数据在陆地水域水位变化监测中的应用进行了试验研究。在同监测点距离最近的地面水文站实测水位的对比来看,二者监测结果间存在显著的线性相关关系,相关系数达0.974。表明基于Jason-2/OSTM GDR数据的水位监测结果具有较高的可信度,在陆地水域水位变化卫星监测中具有一定的现实可行性,从而为我国陆地水域水位变化监测提供了一种新的有效技术手段。

In order to test the feasibility of Jason-2 satellite altimeter data on inland water level monitoring,in this paper,the characteristics of Jason-2/OSTM GDRs and the process for lake water level calculation were elaborated,and the South Dongting Lake on the middle reach of the Yangtze River in China was taken as an monitoring example to experimentally study the application of Jason-2 altimetry data in monitoring of continental water level fluctuations based on data editing rules and some geophysical corrections.The study results compared with the measured level data from the nearest in-situ station showed a linear dependence with the correlation coefficient of 0.974,in the meantime,which proved that the Jason-2/OSTM GDR data had the ability to monitor the continental water level fluctuation to a certain extent,and also could provide an effective technical means and method to investigate the long-term level variations of inland waters in China.