Modeling the Impact of the Viscoelastic Layer Thickness and the Frictional Strength to the Lithosphere Deformation in a Strike-Slip Fault: Insight to the Seismicity Pattern along the Great Sumatran Fault

As an earthquake is capable of causing significant losses, a strain buildup and release model following importance for mitigation purposes. In this study, we aim to on strike-slip fault which consists elastic–brittle (upper crust) elastic–viscous (lower crust upper mantle) layers using finite element model. The strength during controlled by the friction coefficient cohesion, in addition viscoelastic parameter, as shown deformation Maxwell’s material. model, found that differential stress elastic layer larger than increases with thickness layer. When thinner, observed surface larger. However, smaller layer, shows transfer from lower mantle crust. Using knowledge gained varying frictional lithosphere, discuss seismicity pattern along Great Sumatran Fault.