The Research Of Seismic Influence Filed And Intensity Attenaution

The rapid method for determining seismic influence field is a rather important part of seismic intensity rapid reporting technology.lt is recognized by the national people after wenchuan earthquake of2008and lushan earthquake of2013.At present,earthquake prediction is a difficult problem for the whole world.Before the earthquake prediction is solved,seismic intensity rapid reporting technology is key.How to get effective Seismic intensity map of post-earthquake quickly.then sketch the seismic influence field map to let the rescue force distribution more reasonable.to minimize the damage of post-earthquake become the urgent problem.To improve seismic intensity rapid reporting,we must get isoseismal map quickly.also called seismic influence field map.all it requires include magnitude.hypocenter coordinate, the rupture direction of earthquake’s fault line and intensity attenuation formula.The first three conditions are easy to get at the first time.intensity attenuation formula has several versions now.What we using now is divided by large area or by province.for example,intensity attenuation formula of western.intensity attenuation formula of eastern.intensity attenuation formula of Sichuan province intensity attenuation formula of Xinjiang province.Under these conditions.the isoseismal map to some extent conform to the damage of post-earthquake.For better close to reality,obtain the affected range chart,this article put forward that Sichuan province will be partitioned.according to the location.Sichuan province will be divided into4regions(xianshuihe fault zone.other zones of xianshuihe,longmen mountain fault zone.other zones),gather the information about the history of destructive earthquakes in these areas through the internet,use MATLAB,utilize least square.linear regression.refit it to get new intensity attenuation formula in all regions.use GRAPHER show that the relationship between the length of axis length and intensity and take the longmen mountain fault zone where lushan earthquake happened as the subject.by compared.the result reveal that new intensity attenuation is more realistic.To some extent,it prove that according to the fault zone partition,the more subtle.the more close to the actual disaster situation of post-earthquake.