Abstract：By analyzing the characteristics of fault-crossing displacement variation i n the Capital area before and after the Ms 5.1 Wenan earthquake of Hebei on July 4,2006, and combining the characteristics of regional fault activities and regional seismicity in the area since 1970,it is concluded: 1) Since 2000 the thrust activities of NNE directional faults in the Capital area have been increasing, it shows that the present principal compressive stress in the Capital area is in NEE direction; 2) The Cap ital area and surrounding regionsmay enter the next active period of medium-strong earthquakes, theWenan earthquake marks the beginning of this period; 3) The vertical activities of NE directional faults in the Cap ital area and surrounding areas change strongly, the amp litude of variation may be taken as an index for medium to longterm earthquake prediction.
Jiao Qing,Fan Guosheng. ON CHARACTERISTICS OF FAULT-CROSSING DISPLACEMENT VARIATION IN IN CAPITAL AREA BEFORE AND AFTER WENAN EARTHQUAKE[J]. jgg, 2007, 27(6): 17-21.
