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Earth, Planets and Space
Figure 3 | Earth, Planets and Space

Figure 3

From: Friction properties of the plate boundary megathrust beneath the frontal wedge near the Japan Trench: an inference from topographic variation

Figure 3

Schematic of the geometry of the wedge-shaped deformed zone (modified from Tsuru et al.[2002]). α: the slope angle of the sea-bottom surface. β: the décollement dip angle. ω: the angle between the décollement and back-stop interface. The red line on the bottom represents the décollement or plate boundary for which we obtained the effective coefficient of basal friction by the critical taper theory.

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