The estimation of Precipitable Water Vapor(PWV)derived from Global Positioning System(GPS)data at the IGS site WUHN is assessed by comparing with PWV obtained from radiosonde data(No.57494)in Wuhan.Th
GPS data and precise leveling data of seismic network profiles across the fault in Baotou in 2006,2009 and 2011 were processed and analyzed to test the feasibility of using GPS technology for fault-cr