Crustal Q_S Tomography in Taihangshan Uplift and Adjacent Regions

Use the waveform data of M_L≥2.0 earthquake events from 2009 to 2018, the crustal Q_S in Taihangshan uplift and adjacent regions are imaged. Combined with seismic activity and heat flow we study the characteristics of the crustal attenuation. The results show that the crustal Q_S value in the study area changes significantly laterally. In general, the lower the topography and the stronger the tectonic activity, the lower the Q_S value. The distribution of Q_S value is obviously related to topography and tectonic activities. Most M≥6 earthquakes since 1900 are located in the boundary of low Q_S regions, especially the two belts of seismic activity in Heze, Shandong province and Xingtai, Hebei province. Most of the heat flow points in the study area are located in areas with low Q_S values. There is a negative correspondence between the heat flow value and Q_S value.