Study on Secular Influence Factors of Station's Vertical Displacement
会议名称：《第三届中国卫星导航学术年会》
会议日期：2012年
学科分类：08[工学] 081601[工学-大地测量学与测量工程] 0816[工学-测绘科学与技术]
基 金：supported by project of National Natural Science Foundation of China (41074011) Zhengzhou Surveying and Mapping Institute Foundation of China (Y1003)
关 键 词：Vertical displacement postglacial rebound land subsidence vertical datum
摘 要：Considering various dynamic factors,the instantaneous position of the solid Earth’s surface is influenced by plate motion,regional tectonic detection,postglacial rebound and other local deformations which will directly affect their veracity and consistency of global vertical datum’s *** secular factors influencing on station’s vertical displacement was analyzed and discussed such as postglacial rebound,land subsidence and so *** origin of those factors and the changed level of vertical displacement are also discussed,and how to detect and forecast those deformations and movements are as well as *** the end,a method to establish global vertical datum of the crustal motion is put forward,which takes SLR vertical velocity fields as reference datum of vertical motion of the crust,and also is validated by using the vertical velocity fields of Satellite Laser Ranging (SLR) technology based on ITRF2008.