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Earth, Planets and Space
Fig. 6. | Earth, Planets and Space

Fig. 6.

From: Subtle changes in strain prior to sub-Plinian eruptions recorded by vault-housed extensometers during the 2011 activity at Shinmoe-dake, Kirishima volcano, Japan

Fig. 6.

(a) E1 component strain rates between 17 January and 8 February, 2011; SP1, 2, and 3 denote the first, second, and third sub-Plinian eruptions, respectively, that form the focus of this study, and the shaded gray area indicates periods with strain rates of >0.6 × 10−9. (b) E1 component strain rates between 26 and 27 January, 2011, with the lower panel showing simultaneous ground velocity changes at the Takachihogawara seismic station (Fig. 1).

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