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|Authors: ||Tinti, E.*|
|Title: ||A Kinematic Source-Time Function Compatible with Earthquake Dynamics|
|Title of journal: ||Bulletin of the Seismological Society of America|
|Series/Report no.: ||/95 (2005)|
|Publisher: ||Seismological Society of America|
|Issue Date: ||2005|
|Keywords: ||Earthquake dynamics and mechanics|
|Abstract: ||We propose a new source-time function, to be used in kinematic modeling
of ground-motion time histories, which is consistent with dynamic propagation
of earthquake ruptures and makes feasible the dynamic interpretation of kinematic
slip models. This function is derived from a source-time function first proposed by
Yoffe (1951), which yields a traction evolution showing a slip-weakening behavior.
In order to remove its singularity, we apply a convolution with a triangular function
and obtain a regularized source-time function called the regularized Yoffe function.
We propose a parameterization of this slip-velocity time function through the final
slip, its duration, and the duration of the positive slip acceleration (Tacc). Using this
analytical function, we examined the relation between kinematic parameters, such as
peak slip velocity and slip duration, and dynamic parameters, such as slip-weakening
distance and breakdown-stress drop. The obtained scaling relations are consistent
with those proposed by Ohnaka and Yamashita (1989) from laboratory experiments.
This shows that the proposed source-time function suitably represents dynamic rupture
propagation with finite slip-weakening distances.|
|Appears in Collections:||Papers Published / Papers in press|
04.06.03. Earthquake source and dynamics
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|BSSATinti2005.pdf||Published paper||487.67 kB||Adobe PDF||View/Open
|2004177_Tinti.pdf||Tinti_paper||560.6 kB||Adobe PDF||View/Open
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