[1]LI Huacong,ZHONG Jufang.Analysis on the Period Characteristics of the Strongest Pulse Direction Component and Its Influence Factors[J].Journal of Seismological Research,2021,44(01):96-104.
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Analysis on the Period Characteristics of the Strongest Pulse Direction Component and Its Influence Factors
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
44
Number of periods:
2021 01
Page number:
96-104
Column:
Public date:
2021-01-15
- Title:
- Analysis on the Period Characteristics of the Strongest Pulse Direction Component and Its Influence Factors
- Keywords:
- strongest pulse direction component; pulse period; site conditions; magnitude; fault type; fault distance
- CLC:
- P315.92
- DOI:
- -
- Abstract:
- Based on the 243 sets of pulse-like seismic records in the NGA-West2 strong earthquake database,we classified the selected seismic records according to the site classification standards of China,and discussed the influences of site conditions,fault types and fault distance on the variation of pulse period TP in the strongest pulse direction with magnitudeMW.The results show that:① The TP in the strongest pulse direction has a strong linear correlation with the TP in vertical fault strike direction,and the site conditions have little effect on the correlation between the two component pulse periods.② The greater the shear wave velocity of foundation ground,the faster the TP increases with the increasing of MW.③ The predicted value of the pulse period of the class III site is greater than that of the class I site and class II site.④ TP of the strongest pulse direction component increases faster with the increasing of MW than that of the vertical or parallel fault strike component.⑤ Under the conditions of class I and II sites,the TP of non-strike-slip faults increases with the increasing of magnitude faster than that of strike-slip faults.This rule is exactly the opposite under the conditions of class III site.⑥ The TP of class I,II and III sites in non-near-fault area increases with the increasing of MW faster than that in near-fault area.It is recommended that we should consider the effects of site conditions,fault types,fault distance and differences of site classification standards in different countries when using a statistical model of the relationship between pulse period and magnitude.
- References:
- -
- Similar References:
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Last Update:
2021-01-15