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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Subsurface magma movement inferred from extensometer and tiltmeter records during the early stage of the 2018 Shinmoe-dake eruptions, Japan

Fig. 3

a Strain (extension) time series at ISA from 14:00 on 5 March to 12:00 on 8 March. Black dashed lines in a and b mark the boundary between Phases 1 and 2 of the eruption (06:00 on 6 March). b Observed |E2/E1| ratio of the extensometers at ISA from 14:00 on 5 March to 12:00 on 8 March. The gray area denotes the error range of observed |E2/E1| ratio calculated from the observation errors of E1 and E2

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