According as Precursory Information Prediction of Strong Earthquakes in Taiwan

A major earthquake occurred in Taiwan on September 21,1999,the magnitude of which is 7.3 and it's located in the central region of Taiwan(23.85°N,120.78°E).Prior to this earthquake,several distinct imminent precursors were observed by the Research Institute of Earthquake Prediction in Beijing University of Technology(39.88°N,116.47°E),which is more than 1 800 km away from the epicenter such as abnormal infrasonic wave signals,sudden change in crustal stress signals,abnormal jump frequency of the budgerigars etc.Based on the analysis and research of the above information,we have successfully predicted the earth- quakes occurred in Taiwan,such as M_s7.5 on December 18,2001,M_sT.5 on March 31,2002,M_s6.7 on May 19,2004,M_s7.0 on October 15,2004 and Ms6.6 on OctoberlS,2005 etc.