Dimensionless argument: a narrow grain size range near 2 mm plays a special role in river sediment transport and morphodynamics
Gary Parker,
Chenge An,
Michael P. Lamb
et al.
Abstract:Abstract. The grain size 2 mm is the conventional border between sand and gravel. This size is used extensively, and generally without much physical justification, to discriminate between such features as sedimentary deposit type (clast-supported versus matrix-supported), river type (gravel bed versus sand bed), and sediment transport relation (gravel versus sand). Here we inquire as to whether this 2 mm boundary is simply a social construct upon which the research community has decided to agree or whether the… Show more
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