強震動・断層変位

[CS10-11] Numerical simulation of fault arrangement forming pull-apart structure due to faulting movement

〇Hidetaka Saomoto¹ (1.National Institute of Advanced Industrial Science and Technology)

Keywords:active fault, fault movement, pull-apart, finite element method, optimization

Knowledge for the pull-apart structure due to fault displacement is important in the setting of fault planes for strong motion analysis and fault displacement analysis in hazard assessment. Since the previous studies have been limited to individual case studies, fundamental knowledge of the structure is unclear. I combined FEM and optimization methods to estimate the fault plane arrangement that produces the features observed in the pull-apart structure: subsidence displacement field and prominent strike components on faults.