Tuesday 23 August 2005

GP2

PT0083
Determination of inland lake level and its variation in China with altimetry
Chu, Yonghai¹, Li, Jiancheng¹
1 School Of Geodesy And Geomatics, Wuhan University, China
Author email: yh_chu@163.com
There are 11 lakes in China each of which has an area larger than 1000km2. With the rapid development and the widely application of satellite radar altimetry, it provides an efficient tool and a well-validated technique for real time and continual monitoring of the level of inland lake. However, such application is limited due to the sparse data coverage on inland lakes, especially, it is almost impossible to extract the available data from historical altimeters' GDRs such as Geosat, ERS1/2 and Topex/Poseidon missions. Fortunately, data from Jason-1 and Envisat-1 is available in inland lake area of China. In this study, we investigate the Hulun Lake level and its variation by using Jason-1 data. The lake is the fifth largest one in China located in Inner Mongolia region. The results of Hulun Lake level in a time series during 2002-2004 are given in this presentation. The numerical results show the variation of the Hulun Lake level is about decimeter level.

Return to Poster Presentations