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Fig. 1 | Earth, Planets and Space

Fig. 1

From: A convolutional neural network-based classification of local earthquakes and tectonic tremors in Sanriku-oki, Japan, using S-net data

Fig. 1

a Map of the study area. The black crosses indicate S-net stations. The red and blue symbols are the tremor and earthquake epicenters determined by Nishikawa et al. (2019) and JMA, respectively. b Example local earthquake and tremor observations at station N.S4N21. The locations of the example events, Eq #1 and Tremor #1, are shown in a. The upper panel shows a 180-s seismogram record of each example event, with its corresponding spectrogram (normalized from 0 to 1) shown in the lower panel

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