Abstract
Three intermediate- to large-scale bed configurations are recognised (from intertidal sand bodies in the Bay of Fundy), each with a discrete hydraulic stability field. Type 1 megaripples (‘bars’) form at lower flow velocities than Type 2 megaripples (‘dunes’), whereas Type 2 megaripples and megarippled sandwaves are separated primarily by grain size. Megarippled sandwaves occur only in sands coarser than 0.308 mm.
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Dalrymple, R., Knight, R. & Lambiase, J. Bedforms and their hydraulic stability relationships in a tidal environment, Bay of Fundy, Canada. Nature 275, 100–104 (1978). https://doi.org/10.1038/275100a0
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DOI: https://doi.org/10.1038/275100a0
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