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Earth, Planets and Space
Fig. 6 | Earth, Planets and Space

Fig. 6

From: Estimation of source, path, and site factors of S waves recorded at the S-net sites in the Japan Trench area using the spectral inversion technique

Fig. 6

a Plots of stress drop versus depth. The values for the different earthquake types are denoted by different symbols. The PAC-C (red squares) and NAM-C (blue triangles) in the legends denote the crustal earthquakes in the Pacific and North American Plates, respectively. The Unclassified (inverted triangles, green) means the earthquakes, whose tectonic types were not ascertained. b Plots of stress-drop residuals against depth. The different symbols correspond to the different earthquake types as indicated in a above. The filled symbols denote the mean residuals for the corresponding earthquake types computed in the interval of 10 km and the vertical bars denote the range of one standard deviation. The mean residuals are shifted slightly in horizontal directions from the centers of the corresponding intervals for clarity

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