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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Precursory ground deformation of the 2018 phreatic eruption on Iwo-Yama volcano, revealed by four-dimensional joint analysis of airborne and spaceborne InSAR

Fig. 10

Schematics illustrating the pre-eruptive process at the shallow hydrothermal system beneath Iwo-yama. Solid arrows indicate displacements of ground surface and pressure sources. Dashed arrows show subsurface fluid migration. Black and red colors indicate events before and after the mud emission in April 2017, respectively. The blue ellipsoid corresponds to the pressurized crack. The red circle corresponds to the shallower inflation source manifested since April 2017

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