Statistical Regularities of Seismic Noise(New Perspectives,Proceedings of the YITP Workshop on Econophysics,Econophysics 2011-The Hitchhiker's Guide to the Economy-)
スポンサーリンク
概要
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Seismic noise includes the information that comes from crust of earth and hypocenter. The study of seismic noise is an essential topic for earthquake predictability and investigation of crustal structure. In this paper we analyze the seismic noise from 46 stations in all around Japan of Full Range Seismograph Network of Japan (F-net). To investigate the influence from earthquake we analyze two types of seismic noise data, one is the data after earthquake shake, which from 2,000 seconds after the max shake of an earthquake, and others are without any earthquake effects. We find that (i) the magnitude of seismic noise values follows a log-normal distribution and (ii) the conditional mean growth rate and the standard deviation of the growth rate of the magnitude value both obey power-law with the magnitude value. Furthermore we also find that the Hurst exponent depends on the max amplitude of earthquake, and shows a linear correlation with logarithmic max amplitude.
- 2012-06-14
著者
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Takaishi Tetsuya
Hiroshima University Of Economics
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Zheng Zeyu
Department Of Environmental Information Tokyo University Of Information Sciences
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SAKURAI Naoko
Department of Environmental Information, Tokyo University of Information Sciences
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ZHANG Xiangguang
Department of Environmental Information, Tokyo University of Information Sciences
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YAMASAKI Kazuko
Department of Environmental Information, Tokyo University of Information Sciences
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Zhang Xiangguang
Department Of Environmental Information Tokyo University Of Information Sciences
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Yamasaki Kazuko
Department Of Environmental Information Tokyo University Of Information Sciences
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Sakurai Naoko
Department Of Environmental Information Tokyo University Of Information Sciences
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ZHENG Zeyu
Department of Environmental Information, Tokyo University of Information Sciences
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YAMASAKI Kazuko
Department of Environmental Information, Tokyo University of Information Sciences:Center for Polymer Studies and Department of Physics, Boston University
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