Hebei Yongqing M4.3 Earthquake on February 12,2018
WANG Xiao-shan
ZHOU Yue-ling
FENG Xiang-dong
Abstract：This paper gives a relatively reliable focal mechanism solution of the M4.3 earthquake in Yongqing,Hebei province on February 12,2018 through the mutual corroboration of the result of P-wave first motion method and that of waveform inversion.And then,combining with seismic geological data, the result indicates that the Hexiw u fault may be the seismogenic structure.T he analysis of seismic activi-ty characteristics,the focal mechanism solutions and the apparent stress of the middle and south section of Hebei plain seismic belt before the yongqing earthquake show s that there is a dynamic process of stress field enhancement before the earthquake.Finally,combining with the deep and shallow structural features of the middle section of hebei plain seismic belt,the result show s that the region may has the tectonic background of strong earthquakes.
Keywords：Yongqing earthquakefocal mechanism solutonHebei plain seismic beltseismic activityap-parent stress
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 18-22,42 )