Study on co-seismic deformation wave characteristics of crustal deformation observation records in Ankang area

Abstract

Based on the observation records of deformation stations in Ankang area from 2017 to 2020, we compared and analyzed the earthquake-reflecting capacity of six sets of instruments, and systematically discussed the relationship between the source parameters and the characteristic parameters of co-seismic deformation wave from the delay time of surface wave, the biggest shock and duration, and obtained the influencing factors of the earthquake-reflecting capacity of deformation instruments and the physical distribution characteristics of co-seismic deformation wave. The result shows that the earthquake-reflecting capacity of instrument is related to the response characteristics and systematic error of instrument, the characteristics of underground medium; The physical distribution characteristics of co-seismic deformation wave show that there are linear or proportional distribution relationship in a certain degree between the delay time of surface wave and the epicenter distance of earthquakes, the biggest shock of co-seismic and magnitude, the duration time of co-seismic and magnitude and epicenter distance.

Keywords

• crustal deformation
• co-seismic deformation wave
• earthquake-reflecting capacity
• physical distribution characteristic