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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: The region of large site amplification in Northern Hokkaido, Japan, extends to the eastern Soya Region

Fig. 5

Site amplification factors at strong motion stations; At each station, two site amplification factors are compared. One is the result of the GIT analysis (Nozu and Sugano 2010). The gray hatching indicates the average ± one standard deviation in the logarithmic scale except for HKD004, SOYH09 and ABSH02, where only one record was available in the GIT analysis. The other is the site amplification factor based on the records of the May 24, 2013 Sea of Okhotsk earthquake (blue line). The observed Fourier spectrum at each station (Fig. 4) was divided by the observed Fourier spectrum at ABSH05 and multiplied by the site amplification factor at ABSH05 evaluated by Nozu and Sugano (2010)

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