Fig. 3
From: P-wave first-motion polarity determination of waveform data in western Japan using deep learning
Match examples. Waveform examples, for which the polarities determined by the CNN models and human experts coincides, are shown. The top two rows present examples of the San-in data, and the bottom two rows examples of the northern Kinki data. The vertical dashed line in each diagram represents the P-wave arrival time determined by human experts. “M” and “d” on the top of each diagram represent the magnitude of the earthquake and the distance from the hypocenter, respectively. The output of the final “softmax function”, which represents the probability (or reliability) of the estimated polarity in percentage, is also shown together with the CNN polarity determination for each trace