Inversing the crustal thickness under the stations of China via H-Kappa method

In recent year, the receiver function method has become an important method for inversing crustal thickness, whose main process is to use the travel time and amplitude difference between the direct P and P-to-S at Moho discontinuity to inverse the crustal structure and thickness. In this paper, a multiply energy scan and waveform modeling inversion method (H-Kappa) was used, which is an advanced method compared to the traditional receiver function method. Though such H-Kappa method needs a large number of appropriate and well covered events, it can obtain the value of both crustal thickness and Kappa quickly and accurately. A large number of events recorded in the stations of China were calculated, whose gcarcs are from 30 deg to 90 deg and the magnitudes are from 5. 5 to 7. 0. We selected 2 233 receiver functions with high signal-to-noise ratio (SNR) and clear waveform, and performed the inversion by H-Kappa method. The results show that the crustal thickness ranges from 33 km to 36 km in the east of China,