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28 sie 2017 · The main purpose of this study is twofold: (1) to develop detailed models of lithospheric strength of oceanic plates and ridge-push force, and (2) to determine the rheological and tectonic conditions for ridge-push force transmission in the interior of oceanic plates.
Ridge push (also known as gravitational slides or sliding plate force) is a proposed driving force for plate motion in plate tectonics that occurs at mid-ocean ridges as the result of the rigid lithosphere sliding down the hot, raised asthenosphere below mid-ocean ridges.
Recent research has shown that slab pull is the major driving force for most plate movement because the plates with more of their edges being subducted are the faster-moving ones. However, ridge push has also been presented in recent research as a force that drives plate movement.
ridge push: the force due to the buoyancy of the hot mantle rising to the surface beneath the ridge. viscous drag: the force opposing motion of the plate and slab past the viscous mantle underneath or on the side. This force balance is given by: Fridge − push + Fslab − pull − Fviscous − drag = 0.
29 gru 2014 · Definition. Plate Driving Forces: The forces that drive the motions of tectonic plates at the surface. Slab Pull: The force exerted by the weight of the subducted slab on the plate it is attached to. Ridge Push: The pressure exerted by the excess height of the mid-ocean ridge.
1 sty 2021 · These sublithospheric buoyancy forces generate the plate-driving forces F sp (slab pull) and F rp (ridge push). Whether the force F bs (basal shear) is a plate-driving or plate-resisting force depends on the relationship of the surface plate velocity v p to the underlying mantle flow velocity v m (see main text for discussion).
One side in the argument holds that the plates are only moved by the traction caused by mantle convection. The other side holds that traction plays only a minor role and that two other forces, ridge push and slab pull, are more important. Some argue that the real answer lies somewhere in between.
