Research on crustal deformation movement and seismic activity of the region of Shanxi, Hebei and Inner Mongolia
The research object of this paper is the region of Shanxi,Hebei and Inner Mongolia,based on the regional precision leveling since 1984 and GNSS since 1999 of crustal deformation observation data in research region.By the quasi-stable adjustment calculation regional precision lever and then Kriging interpolation method,we get the contour map of crustal vertical movement;Using GAMIT/GLOBK software to calculate the GNSS data,and then the calculation results are transformed by the Euler vector method,we get the velocity field of crustal horizontal movement.Through the analysis and research we think:The horizontal movement and vertical movement of the crust in the study area are related to a certain level,but the horizontal movement is weaker than the vertical movement;using regional precision lever results to determine the vertical movement of the vertical motion of the fall of the high gradient zone (greater than 20 mm) is the next occurrence of ≥4.0 earthquakes in the regions of focus,it shows that the vertical movement of the crust is of great significance to the seismic hazard zone determination;By seismic activity statistics showed that the distribution of seismic activity has obvious zoning laws and migration,change and study area of vertical crustal movement is consistent with the law,it shows that the regional precision level is an effective method to effectively capture the vertical movement of the crust and fault,The other is strike slip and low angle normal faults near the horizontal crustal movement and vertical motion has relevance is in good part,And when the correlation is not consistent or vertical movement active while the level of weak motion near future earthquake is likely to occur.
NETL
NSTL
万方数据
维普
