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

Fig. 2

From: Harmonic tremor from the deep part of Hakone volcano

Fig. 2

Record section of velocity waveforms recorded at HSRI and Hi-net stations within 100 km from N.ASGH station during 03:00–04:00 on May 26, 2019 (JST = UT + 9 h). a and b show the record sections along to N–S (red triangles in d) and WSW–ENE (blue triangles in d) sections, respectively. c A magnified plot of a during the main tremor signal between 1560 and 2400 s. The two blue broken lines correspond to the traces with the apparent velocity of 3 and 5 km/s. The amplitude of each station was normalized. d Station distribution

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