Prediction of Tohoku Seismic Catastrophe by Microseismic Noise Multi-Fractal Properties

The analysis of low-frequency seismic noise multi-fractal properties from broadband network F-net in Japan allowed a hypothesis about approaching Japan Islands to a future seismic catastrophe to be formulated at the middle of 2008. The base for such a hypothesis was statistically significant decreasing of multi-fractal singularity spectrum support width mean value. The peculiarities of correlation coefficient estimate within 1 year time window between median values of singularity spectra support width and generalized Hurst exponent allowed to make a decision that starting from July of 2010 Japan come to the state of waiting strong earthquake. This prediction of Tohoku earthquake, initially with estimate of lower magnitude as 8.3 only (at the middle of 2008) and further on with estimate of the time beginning of waiting earthquake (from the middle of 2010) was published in advance in a number of scientific articles and abstracts on international conferences. The analysis of data after Tohoku earthquake indicates increasing probability of the 2nd strong earthquake with magnitude more than 8.5 starting from the middle of August 2011 within the rectangular domain with longitudes range 137-142 degrees and latitudes range 30-34 degrees which is characterized by relatively low values of singularity spectrum support width. Plotting the maps of singularity spectra support width within moving time window based on the time series from monitoring systems presents a new method of dynamic seismic hazard estimate.<br />When and Were the prediction of Tohoku 2011 seismic catastrophe was published
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