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1998年1月10日在河北省张北—尚义地区发生Ms6．2级地震，研究本次地震的霞源机制对于研究震源区和华北地区的地震活动性、构造运动和地球动力过程都有重要意义，我们用地幔波波形拟合及P波初动符号估计了本次地震的震源机制，提供了若干条P波列宽频垂直向（BHZ）波形图，认为以逆冲为主的断裂引起本次地震．
On January 10, 1998, an Ms6.2 earthquake occurred in Zhangbei-Shangyi area of Hebei Province to study the Xiayuan mechanism of this earthquake. It is of great significance to study the seismicity of the source area and the North China area, both the tectonic movement and the geodynamic process In an important sense, we use the mantle waveform fitting and the P-wave prime mover to estimate the focal mechanism of this earthquake and provide several waveforms of P-wave broad-band vertical (BHZ) waveforms. It is believed that the thrust-dominated fracture This earthquake.