bottomVelocityAtTime

Evaluate the bottom kinematic velocity.

---

Declaration

 gBottom = bottomVelocityAtTime(t)

Parameters

• t finite scalar time in seconds

Returns

• gBottom real bottom-normal velocity on the horizontal grid

Discussion

For upward-positive topography, this returns \(g_b=\mathbf{U}_{\mathrm{bt}}\cdot\nabla_H h\).