Abstract
GPS continuous observation and repeated pre cise leveling between Kakegawa and Omaezaki, Tokai area, Japan, have been carried out by the Geographical Survey Institute for detecting verti cal deformation and identifying its noise charac teristics. Comparing relative height differences obtained from two different observations with each other, it is made clear that the annual change in leveling result is in phase with that of zenith analysis, but the amplitude of the former is twice larger than that of tropospheric ZTD. In contrast, it is found out that the linear subsidence rate given by GPS is a little larger than that from leveling.
