Intermittency and slip-size distribution in the block-spring model of earthquakes

Hidetsugu Sakaguchi, Shingo Morita

    研究成果: Contribution to journalArticle査読

    2 被引用数 (Scopus)

    抄録

    The Carlson-Langer model is a deterministic model of earthquakes. There were many investigations of this model, but its complicated spatio-temporal dynamics is not yet completely understood. We again study the model equation numerically, and obtain two new results. Firstly, we try to understand the complicated dynamics from the viewpoint of spatio-temporal intermittency. We study the intermittent dynamics of a two-block system using a one-dimensional map, which is useful for understanding an intermittent spatio-temporal chaos in larger systems. Large slips occur intermittently after repeated small slips when the parameter of the velocity weakening friction is large. Small slips reduce the spatial irregularity of block displacement, and large slips occur on a relatively flat configuration of blocks. Secondly, we study the effect of spatial heterogeneity such as asperity using percolation clusters. We show the numerical results of the slip-size distribution in the block-spring model on percolation clusters, and find that the b parameter for the slip-size distribution is close to 2/3 when the velocity weakening parameter is intermediate.

    本文言語英語
    論文番号114006
    ジャーナルjournal of the physical society of japan
    82
    11
    DOI
    出版ステータス出版済み - 11 2013

    All Science Journal Classification (ASJC) codes

    • 物理学および天文学(全般)

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