3:54 PM - 3:57 PM
[SCG57-P14] Landward migration of active folding estimated from topographic developments along the eastern margin of the Japan Sea
3-min talk in an oral session
Keywords:fold, fault, topography, earthquake, deformation, high strain rate zone
We focus here on the erosional and topographic evolution of fold structures developed since the late Pliocene in the Akita and Niigata regions. We measured the distance between the fold hinge lines and the mountain ridge lines. We targeted 44 folds that were activated since the late Pliocene, comprising 12 and 32 folds in the Akita and Niigata regions, respectively. Spatial variations in the normalized deviations are consistent with the systematic eastward migration of fold growth in the area. The topographic behavior indicates that the landward migrating of the fold growth is generally constant.
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