当前位置: X-MOL 学术J. Seismol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Magnitude-scaling relationships based on initial P-wave information in the Xinjiang region, China
Journal of Seismology ( IF 1.6 ) Pub Date : 2021-01-22 , DOI: 10.1007/s10950-020-09981-w
Yuan Wang , Shanyou Li , Jindong Song

To improve the mitigation of seismic disasters in the Xinjiang region, the peak displacement (Pd) and the period parameter (τc) widely used in magnitude estimation for earthquake early warning systems (EEWSs) were investigated in this study. Based on 331 vertical strong-motion records from 58 earthquakes that occurred in the Xinjiang region between 2007 and 2015, we established and evaluated the magnitude-scaling relationships for the two parameters measured from the first 3 s after the P-wave arrival. The calibrations show that both Pd and τc are correlated with the earthquake magnitude within the magnitude range of the study dataset. The linear slope of the Pd–magnitude relationship in this study is lower than those observed in other regions. The τc parameter shows a consistent increasing trend compared with other studies; however, it yields a large uncertainty in the magnitude estimates using a single station. The reliability of the established relationships is evaluated with two earthquakes from the same region, and the results show that a robust magnitude estimate can be obtained when the closest three seismological stations are used. Our study offers insight into the feasibility of an EEWS in the Xinjiang region.

更新日期:2021-01-22
down
wechat
bug