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Fig. 5 | Earth, Planets and Space

Fig. 5

From: Three-dimensional topographic relief of the oceanic crust may control the occurrence of shallow very-low-frequency earthquakes in the Nankai Trough off Kumano

Fig. 5

Fault distribution in the shallow sediments. a A horizontal slice of the coherence cube at a depth of 4 km. Conjugate faults cutting the in-sequence thrusts are identified in the area with the yellow dashed circle. b The interpreted fault distributions identified on the horizontal slice are shown with black lines. The blue dashed lines indicate the anticlinal axes of folds in the imbricated thrust zone. The maximum horizontal axis inferred from the horizontal fault distribution is approximately 333° clockwise from the north, which is oblique to the subduction direction 300°–315°. c Vertical sections along the SW–NE direction (XL 4540) of the Kirchhoff PSDM image and d the same image as (c) with structural interpretation. The vertical displacements and topographic variations in the seafloor can be interpreted in the faulted area due to subsequent faults

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