APLICATION OF CORS OF GNSS IN LAND SUBSIDENCE MONITORING IN TIANJIN
Gao Yanlong; Zheng Zhijiang;Han Yueping; Fu Lming ;and Chen Fuchao
First Crust Monitoring and Application Center,CEA,Tianjin 300180
Abstract The difficulties and uncertainties caused by reference datum changes in land subsidence estimation are discussed. In order to solve the difficulty,the method in which the velocity datum is determined by the observed elevation variations time series combined with the repeated leveling data at several GNSS stations is presented. Some practical examples are given for the comparison between this method and the traditional one,it is proved that the new method has some advantages.On the basis of these results, some recommendations about the land subsidence monitoring and the evaluation method in the Tianjin area are proposed. These recommendations may have some helps for land subsidence monitoring and evaluation in other similar areas.
Key words ：
land subsidence monitoring
CORS(continuously operating reference station)
elevation component
time series
velocity datum
Received: 01 January 1900
Corresponding Authors:
Gao Yanlong
Cite this article:
Gao Yanlong,Zheng Zhijiang,Han Yueping et al. APLICATION OF CORS OF GNSS IN LAND SUBSIDENCE MONITORING IN TIANJIN[J]. , 2012, 32(5): 22-26.
Gao Yanlong,Zheng Zhijiang,Han Yueping et al. APLICATION OF CORS OF GNSS IN LAND SUBSIDENCE MONITORING IN TIANJIN[J]. jgg, 2012, 32(5): 22-26.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2012/V32/I5/22
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