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Vertical coseismic deformation on non-causative fault caused by remote strong earthquakes(epicentral distance≥1500 km,MS≥7.0)are observed by fault-monitoring instruments of new type during recent two years.The monitor-ing result shows,delay time,maximum amplitude and duration of vertical deformation on the non-causative faulthave remarkable close relationship with earthquakes magnitude and epicentral distance.The delay time of verticalcoseismic deformation have positive linear relationship with epicentral distance.The velocity of coseismic defor-mation is 5.5 km/s,close to the velocity of surface wave in granite.The logarithms of maximum amplitude of co-seismic deformation and epicentral distance have remarkable linear relationship with magnitude.The greater themagnitude and the closer the epicentral distance are,the bigger the maximum amplitude of coseismic deformationon non-causative fault will be.Relative to the epicentral distance,the magnitude is the most important factor to theduration of coseismic vertical deformation on the non-causative fault.Stronger earthquake causes longer vibrationduration of coseismic deformation.The experiential equation of co-seismic deformation faults obtained by thiswork is significant on the coseismic deformation research.
Vertical coseismic deformation on non-causative fault caused by remote strong earthquakes (epicentral distance ≧ 1500 km, MS ≧ 7.0) are observed by fault-monitoring instruments of new type during recent two years. Monitor-ing result shows, delay time, maximum amplitude and duration of vertical deformation on the non-causative faulthave remarkable close relationship with earthquakes magnitude and epicentral distance.The delay time of verticalcoseismic deformation have positive linear relationship with epicentral distance.The velocity of coseismic defor-mation is 5.5 km / s, close to the velocity of surface wave in granite. The logarithms of maximum amplitude of co-seismic deformation and epicentral distance have remarkable linear relationship with magnitude. the greater the magnitude and the closer the epicentral distance are, the bigger the maximum amplitude of coseismic deformationon non- causative fault will be. Relative to the epicentral distance, the magnitude is the most important factor to t heduration of coseismic vertical deformation on the non-causative fault.Stronger earthquake causes longer vibrationduration of coseismic deformation.The experiential equation of co-seismic deformation problems obtained by thiswork is significant on the coseismic deformation research.