If a traditional explicit numerical integration algorithm is used to solve motion equation in the finite element simu- lation of wave motion, the time-step used
Chemical composition of groundwater reflects the historical evolvement of groundwater in an area. The Cluster Analysis method is introduced in this paper with d
We analyzed digital seismogram data of 5 668 earthquakes that occurred in Yunnan region between July of 1999 and December of 2003. Among the 22 seismic stations