摘要
随机法模拟地震动目前主要采用点源模型和有限断层模型两种方法。本文运用随机点源模型拟合肃南中小地震(ML=4.5,1988年12月19日)与实际记录吻合较好。对获得强震记录的肃南地震(Ms=5.7,1988年11月22日)运用点源模型和有限断层模型两种随机方法模拟计算近场区强震地面运动,并同肃南地震台实际观测记录相比较,强调强震近场地震动预测考虑有限断层更符合实际记录。
At present,two main stochastic models,point-source model and finite-fault model,are adopted to simulate ground motions. In this article,the stochastic point-source model is adopted to simulate the minor-moderate magnitude Sunan earthquake (ML=4.5,19 December 1988) and the result is reasonable. The stochastic point-source model and finite-fault model are used to simulate near-source strong ground motions for Sunan strong earthquake (Ms=5.7,22 November 1988),and the results show that the finite-fault effect should be considered in near-source ground motion estimation.
引文
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