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Earth, Planets and Space
Figure 9 | Earth, Planets and Space

Figure 9

From: Evolutionary process of Beppu Bay in central Kyushu, Japan: a quantitative study of the basin-forming process controlled by plate convergence modes

Figure 9

Numerical simulation by means of discrete element modeling. Numerical simulation was performed for restoring structural features within the hanging wall of the low-angle detachment fault. (a) Seismic sections (E and J; V/H = 1.0) crossing Beppu Bay are shown for reference. The high-resolution profile of line J is after Abe et al. (2013). See Figure 1 for line locations. Detachment faults are delineated by red lines, and measured fault angles are annotated in green. (b) Discrete element model of sedimentary layer. The model is 900 m thick and 5,000 m wide. The sedimentary layer is a homogeneous and isotropic medium and is shown in blue and yellow with 100-m interval to identify the displacement field caused by fault motions simply. (c,d) Models for actual structure types on different fault angles (Figure 9a). The restored hanging wall deformation in the low-angle model is annotated.

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