Movable Bed Roughness in Unsteady Oscillatory Flow Movable Bed Roughness in Unsteady Oscillatory Flow Grant, W.D. and O.S. Madsen Journal of Geophysical Research, Vol. 87, No. C1, pp. 469-481, 1982 WHOI-R-82-003 Posted in 1982, Coastal Processes, Sediment Processes