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Fig. 7 | Earth, Planets and Space

Fig. 7

From: Spatial heterogeneities in tectonic stress in Kyushu, Japan and their relation to a major shear zone

Fig. 7

Schematic illustration of a model of the stress field. (Upper) Stress regime and horizontal principal direction of the stress from southwest Honshu to Kyushu. Yellow and light orange areas indicate the shear zone and B–U area, respectively. The slip direction at the shear zone is indicated by white arrows. The green ellipsoid in the B–U area implies an area with large contraction. Red triangles indicate volcanoes in the Aso and Beppu regions. Red and purple arrows show directions for σ Hmin. The σ Hmax direction is shown by the thick right blue arrow. (Lower) Spatial principal stress variation from the B–U area to southwest Honshu

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