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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

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

Fig. 2

Number of automatically determined hypocenters per day during the study period. a Number of stations available, and b number of events for each label. Labels K and S are quality labels from the JMA unified catalog and labels A–D are quality labels from this study (see “Quality control label classifier”); only labels K, S, A, and B are included in our merged catalog

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