Meander Changes in Relation to Bend Morphology and Secondary Flows

  1. J. D. Collinson and
  2. J. Lewin
  1. J. M. Hooke1 and
  2. A. M. Harvey2

Published Online: 29 APR 2009

DOI: 10.1002/9781444303773.ch9

Modern and Ancient Fluvial Systems

Modern and Ancient Fluvial Systems

How to Cite

Hooke, J. M. and Harvey, A. M. (1983) Meander Changes in Relation to Bend Morphology and Secondary Flows, in Modern and Ancient Fluvial Systems (eds J. D. Collinson and J. Lewin), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303773.ch9

Author Information

  1. 1

    Department of Geography, Portsmouth Polytechnic, UK

  2. 2

    Department of Geography, University of Liverpool, UK

Publication History

  1. Published Online: 29 APR 2009
  2. Published Print: 7 FEB 1983

ISBN Information

Print ISBN: 9780632009978

Online ISBN: 9781444303773

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Keywords:

  • meander changes in relation to bend morphology and secondary flows;
  • the modern channel;
  • path length and curvature relationship;
  • model of meander development on the Dane;
  • inter-riffle units and meander bends

Summary

The changes in meander patterns since 1840 have been identified from maps, air photographs and field survey for a 14 km reach of the River Dane in Cheshire, England, with a mobile meandering channel. An important type of change is the development of asymmetric lobes and double-headed bends. Plots of path length against curvature show groupings for three major types of movement: migration, growth and lobing. Plots of path length and curvature also reflect the pool-riffle to bend relationships. Beyond critical combinations of path length and curvature it appears that secondary flows can no longer be sustained and new riffles develop leading to new bend forms. This provides a mechanism for explaining the historical changes but suggests that no equilibrium form is evident on this channel in the study period and that a progressive model of meander development is appropriate.