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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Strong ground motion simulations of the 2016 Kumamoto earthquakes using corrected empirical Green’s functions: methods and results for ESG6 blind prediction Steps 2 and 3 with improved parameters

Fig. 3

Inverted Q-value and behavior of the path factor. (Left) Black dots indicate the inverted Q-values by the spectral inversion. The red line indicates the linear approximation of the inverted Q-value. Blue, green, green dashed, and yellow lines indicate the Q-values estimated in the area around the Kumamoto earthquakes by Kato (2001), Nakano et al. (2015) in Region 1 for crustal earthquakes, Nakano et al. (2015) in Region 4 for crustal earthquakes, and Somei et al. (2019), respectively. In Nakano et al. (2015), Region 1 includes the west of Kyushu Island and Region 4 includes the east of Kyushu Island. (Right) Black, red, and blue lines indicate the frequency dependence of the path term by the inverted Q-value at distances of 20, 40, and 60 km, respectively. Black, red, and blue dashed lines indicate the frequency dependence of the path term by Q = 140f1.1 at the distance of 20, 40, and 60 km, respectively

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