Seismic shaking in the North China Basin expected from ruptures of a possible seismic gap Academic Article uri icon


  • AbstractA 160km long seismic gap, which has not been ruptured over ~8000 years, was identified recently in North China. In this study, we use a dynamic source model and a newly available highresolution 3D velocity structure to simulate longperiod ground motion (up to 0.5 Hz) from possibly worst case rupture scenarios of the seismic gap. We find that the characteristics of the earthquake source and the local geologic structure play a critical role in controlling the amplitude and distribution of the simulated strong ground shaking. Rupture directivity and slip asperities can result in largeamplitude (i.e., >1 m/s) ground shaking near the fault, whereas longduration shaking may occur within sedimentary basins. In particular, a deep and closed Quaternary basin between Beijing and Tianjin can lead to ground shaking of several tens of cm/s for more than 1min. These results may provide a sound basis for seismic mitigation in one of the most populated regions in the world.

published proceedings


altmetric score

  • 0.25

author list (cited authors)

  • Duan, B., Liu, D., & Yin, A. n.

citation count

  • 8

complete list of authors

  • Duan, Benchun||Liu, Dunyu||Yin, An

publication date

  • May 2017