Additional file 1 of Detection of hidden earthquakes after the 2011 Tohoku earthquake by automatic hypocenter determination combined with machine learning

Additional file 1: Figure S1. Changes in earthquake detectability in and around eastern Japan (≤ 50 km depth). Figure S2. Hypocentral distribution of events in the JMA unified catalog during the 11 years preceding the 2011 Tohoku earthquake. Figure S3. Heat map of events in the JMA unified catalog during the 11 years preceding the 2011 Tohoku earthquake. Table S1. Features used in our LightGBM quality control classifier.