Sand ripples and dunes

F Charru, B Andreotti, P Claudin - Annual Review of Fluid …, 2013 - annualreviews.org
… In Section 3, we discuss the dynamics of sediment transport. Section 4 is devoted to the
linear stability analysis of a flat bed and some nonlinear developments. Finally, finite-size effects …

The stability of ripples and dunes

SR McLean - Earth-Science Reviews, 1990 - Elsevier
… By assuming a realistic lag based on the mechanics of bed load transport, a fastest growing
wave at ripple-scales results: similarly, if suspended sediment were included, longer lags …

Ripple and dune formation in rivers

M Colombini, A Stocchino - Journal of Fluid Mechanics, 2011 - cambridge.org
dune and ripple formation and for a clarification of the debated role of ripples on the formation
of dunes. … flow and sediment transport rates than do ripples; however, ripples often form on …

[引用][C] Sediment ripples and dunes

F Engelund, J Fredsoe - Annual Review of Fluid Mechanics, 1982 - annualreviews.org
… When the tractive force is increased to the point where sediment transport starts, the bed
will be unstable. In the case of fine sediment, ripples are formed, while coarse sediments …

Transition from ripples to dunes

AJ Raudkivi - Journal of Hydraulic Engineering, 2006 - ascelibrary.org
… the bed at small excess bed shear stress; whereas dunes interact with the total flow. In small
… of dunes, postulated that in a flow—which is saturated to carrying capacity with sediment—…

[引用][C] The formation of sediment ripples, dunes, and antidunes

JF Kennedy - Annual review of fluid mechanics, 1969 - annualreviews.org
… Oscillating fluid motions accompanying waves and tides also generate sedimentary
ripples and dunes. The ripples formed by translational waves (8, 9) are especially noteworthy …

A unified model of ripples and dunes in water and planetary environments

O Duran Vinent, B Andreotti, P Claudin, C Winter - Nature Geoscience, 2019 - nature.com
… We identify two types of bedforms consistent with subaqueous ripples and dunes, and …
of sediment transport we provide a new unifying framework to compare ripples and dunes in …

The formation of ripples and dunes on an erodible bed

KJ Richards - Journal of Fluid Mechanics, 1980 - cambridge.org
… Primary ripples are then … ripples become unstable and form secondary ripples with a larger
form drag. Liu (1 957) proposes that the sediment bed acts as a viscous fluid and that ripples

[HTML][HTML] A unifying model for planform straightness of ripples and dunes in air and water

DM Rubin - Earth-science reviews, 2012 - Elsevier
… 5a–b), where bedform orientation is controlled by orientation of a sediment source (source-bordering
dunes), where a flow changes to a new direction (either through time or with …

Mechanics of flow over ripples and dunes

JM Nelson, JD Smith - Journal of Geophysical Research …, 1989 - Wiley Online Library
sediment-bed interactions comprises the basis for developing better methods for computing
effective roughnesses of channels in which ripples or dunes … of sediment transport on rippled