Wavelet-based Analysis for Pulse Period of Earthquake Ground-motions

Publish Year: 1392
نوع سند: مقاله ژورنالی
زبان: English
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JR_IJE-26-10_010

تاریخ نمایه سازی: 17 خرداد 1393

Abstract:

Pulse period of earthquake records has been known as a key parameter in seismology and earthquake engineering. This paper presents a detailed characterization of this parameter for a special class ofearthquake records called pulse-like ground motions. This type of motion is often resulted fromdirectivity effects and is characterized by a strong pulse in the velocity time history of motion, in normal-fault component. Wavelet analysis was used as a powerful and useful technique in the analysis of non-stationary signals in this study. The period of velocity pulses is basically determined using thepseudo-period of the mother wavelets. The effects of three different mother wavelets on results were investigated and new empirical predictive equations for pulse period have been derived.

Authors

s Yaghmaei-Sabegh

Department of Civil Engineering, University of Tabriz, Tabriz, Iran