SEISMIC SEQUENCE SPECTRUM MIGRATION OF WUSHI MS7.1 EARTHQUAKE ON JANUARY 23,2024
The focal mechanism solution of MS≥4.0 earthquake in Wushi MS7.1 earthquake se-quence is calculated by P-wave first motion method.The focal mechanism solution has the character-istics of good consistency in the early stage and disordered consistency in the later stage.In space,the type of focal mechanism solution in Wushi County is mostly thrust type,and the type of focal mechanism solution in Aheqi County is mostly strike-slip type.The frequency spectrum of MS≥5.0 earthquake sequence in Wushi MS7.1 earthquake sequence is calculated by using the digital wave-form data of Xinjiang seismic network and the fast Fourier transform method.The calculation results show that the frequency spectrum of the MS≥5.0 aftershocks in Wushi County has the characteris-tics of spectrum migration in the early stage,and the frequency band of the last MS≥5.0 earthquake becomes wider,and the frequency spectrum migration characteristics disappear.The 5-magnitude aftershocks in Aheqi County all showed spectral migration characteristics.
NETL
NSTL
万方数据
