| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In order to understand the origin of complexity of earthquakes, we conduct numerical simulations using a spring-block model and an elastic continuum model. By the use of a rate- and state-dependent friction law, the slip nucleation process and various kinds of aseismic slip processes are reproduced in the spring-block model. In the elastic continuum model, complex earthquake cycles are reproduced even with a few asperities. From analyses of global earthquake catalogue, precursory seismic quiescence was found for some great earthquakes, which can be explained by preseismic sliding expected from the models with rate- and state-dependent friction.
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