Model for tectonic tremors: Enduring events, moment rate spectrum, and moment-duration scaling
Model for tectonic tremors: Enduring events, moment rate spectrum, and moment-duration scaling
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构造震动模型：持久事件、矩率谱和矩持续时间缩放
DOI：
10.1103/physreve.105.014124
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发表时间：
2022
影响因子：
2.4
通讯作者：
Mochizuki Kimihiro
中科院分区：
文献类型：
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作者：
Fukuda Kota;Hatano Takahiro;Mochizuki Kimihiro
从理论物理学的角度获得地震统计数据的尝试很多，但这些研究大多涉及常规地震。近年来，人们发现了一种新的地震类型，称为慢地震。慢地震只发出微弱或没有地震信号，并且与常规地震有不同的统计数据。在这里，我们提出了一个物理模型的震颤，这是一种类型的慢地震，引入两个竞争的时间尺度的元胞自动机模型。该模型再现了一些观测结果的震颤，如持久的事件，时刻持续时间标度，大小分布，和功率谱的时刻率函数。
Numerous attempts have been made to obtain earthquake statistics from a theoretical-physics perspective, but these studies mostly involve regular earthquakes. In recent years, a new category of earthquakes, referred to as slow earthquakes, has been discovered. Slow earthquakes emit only weak or no seismic signals and have different statistics than regular earthquakes. Here we propose a physical model for the tremor, which is a type of slow earthquake, introducing two competing timescales in a cellular automaton model. The proposed model reproduces some observation results for tremors, such as enduring events, moment-duration scaling, size distribution, and the power spectrum of the moment rate function.