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Earth, Planets and Space
Fig. 11 | Earth, Planets and Space

Fig. 11

From: Detection of hidden earthquakes after the 2011 Tohoku earthquake by automatic hypocenter determination combined with machine learning

Fig. 11

Hypocentral distribution (1 March 2011 to 29 February 2012, ≤ 100 km depth). a Hypocentral distribution of the merged catalog; symbol colors indicate depth. AO, AK, IW, YM, MY, and FK indicate Aomori, Akita, Iwate, Yamagata, Miyagi, and Fukushima Prefectures, respectively. b Cross-sectional views of events in the merged catalog (black) and the JMA unified catalog (red). The cross-sectional views show earthquakes occurring within 40 km of each line in (a). The pink shaded area represents the continental crust and the green shaded area represents the oceanic crust of the subducting Pacific Plate from the JIVSM model (Koketsu et al. 2012)

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