Applications of GPS to Current Crust Movements and Monitoring Seismic Precursors

In accordance with GPS dada produced from "Crust Movement Observation Network of China",the current motin and deformation of the blocks and their boundaries in the continent of China are computed and analyzed,using "inverse DDA of a block system in the sphere coordinate".And making wavelet transformation for the observational sequences of GPS continuously tracing stations,we investigated approaches abstracting precursory information from the continuously observational sequences of GPS with analysis of earthquake events occurred.