Construct · 1 fields · 2 citations

riffle: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a standalone construct Nearest construct by meaning·not indexed
riffle1 CONSTRUCTStream riffleLEOPOLD · POOL-RIFFLE

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Fluvial geomorphology

A shallow fast reach between deep pools

In rivers a riffle is a shallow, steeper, fast and turbulent reach of coarse bed material that alternates along a channel with deep, slow pools, the two forming the regularly spaced pool-riffle sequence of gravel-bed streams. The spacing scales with channel width and the pattern is maintained by how flow and sediment transport reverse in strength between low and high discharge. Leopold, Wolman, and Miller's Fluvial processes in geomorphology set out the pool-riffle form, and Montgomery and Buffington's channel-reach classification places it among mountain channel types. The referent is a naturally occurring morphological unit of a streambed and the habitat it creates, distinct from a deliberately built gold-trapping ridge despite the shared image of ridged, broken water.[1][2]

Unit
Spacing, slope, and grain size of the riffle relative to adjacent pools
Recovery means
Not applicable
Measured by
Quantified by riffle spacing (typically five to seven channel widths), bed slope, grain size, and velocity and depth contrasts with pools

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Nearby constructs

shuffle2 fields · 2 citationsjingle · one word, two constructsreach1 fields · 1 citationsanchor · a standalone constructchannel4 fields · 4 citationsjingle · one word, four constructs

References

  1. Leopold, L. B., Wolman, M. G., & Miller, J. P. (1995). Fluvial processes in geomorphology. Dover Publications. (Original work published 1964) ISBN 9780486685885
  2. Montgomery, D. R., & Buffington, J. M. (1997). Channel-reach morphology in mountain drainage basins. Geological Society of America Bulletin, 109(5), 596–611. https://doi.org/10.1130/0016-7606(1997)109<0596:CRMIMD>2.3.CO;2

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