Journal of The School of Marine Science and Technology,Vol.7 No.3
An experimental and theoretical study on stick-slip phenomenon with some considerations from scientific and engineering viewpoints of earthquakes
Yoshimi OHTA and Omer AYDAN
Abstract
Earthquakes often occur periodically with a regular or an irregular interval time.Stored mechanical deformation and the accumulation of the stress are repeated following the slippage of discontinuities such as faults in the Earth’s crust as a result of stress release.This behavior is called stick-slip.Stick-slip is commonly observed in the frictional sliding of rock discontinuities.Earthquakes occurring on preexisting faults repeatedly are interpreted as a stick-slip phenomenon. In this article, the stick-slip phenomenon is investigated experimentally and theoretically.It is shown that the stiffness,static and kinetic friction coefficients,plate velocity greatly influence the recurrence time,rise time and the amplitude of ground motions.The experimental and theoretical results presented in this paper clarify many aspects of stick-slip phenomenon and they have great implications on the scientific and engineering characteristics of earthquakes.
     
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