SEISMIC STRUCTURE OF HEBEI PROVINCE

Four aspects of seismic structure of Hebei province were analysed,that is, (1)seismicity of Hebei province,(2)Cenozoic geotectonic framework,(3) neo-geotectonic movement and(4)recent geotectonic movement.
The authors have mainly discussed the characteristics of the earthquake spatial and temporal distribution and its migration in NS direction in the first aspect;the Cenozoicsedimentaton,downfaulted bosin,seismic subareas divided by different structures and deep-seated structure in the second;the structural stress field,active fault,fold and activity of volcano and hot spring in the third;the changes of river system in plain areas,focal mechanism,ground deformation in the fourth.Finally,fundamental characteristics of seismic structure of Hebei province were summed up.