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Analysis of Sediment Transport from Recorded Signals of Sediments in a Gravel-Bed River: Role of Sediment Availability

  • Eric TravagliniEmail author
  • Eric Bardou
  • Christophe Ancey
  • Patricio Bohorquez
Conference paper

Abstract

Geophones were used as a proxy for determining the behavior of sediment transport in boulder mountain river. Field observations aggregated by a statistical analysis (PCA) allowed to identifying periods in which the behaviour between the water discharge (Qw), the sediment flux (Qs) and the meteorologic conditions was correlated. Within each period a relationship between Qs and Qw could be found and summarized by two parameters: the critical drag discharge for motion initiation (Qd) and the mean transport rate (Tmean). The coefficients of determination were close to 0.8, which showed the consistency of the linear relationship. The variability in the relationship Qs ~ Qw could be related to the availability to motion of sediments. In contrast with laboratory experiments, in which sediment storage is indefinitely large, natural systems can suffer from sediment shortage under certain conditions. This may explain why bedload transport equations determined from laboratory experiments significantly overestimate the bedload transport rate.

Keywords

Bedload Sediment availability Hysteresis Geophones Geomorphology 

References

  1. Lisle TE, Cui Y, Parker G, Pizzuto JE, Dodd AM (2001) The dominance of dispersion in the evolution of bed material waves in gravel-bed rivers. Earth Surf Proc Land 26:1409–1420Google Scholar
  2. Parker G, Hassan M, Wilcock P (2007) Adjustment of the bed surface size distribution of gravel-bed rivers in response to cycled hydrographs. Dev Earth Surf Proc 11:241–285CrossRefGoogle Scholar
  3. Rickenmann D, Turowski JM, Fritschi B, Klaiber A, Ludwig A (2012) Bedload transport measurements at the Erlenbach stream with geophones and automated basket samplers. Earth Surf Proc Land 37:1000–1011CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Eric Travaglini
    • 1
    Email author
  • Eric Bardou
    • 1
  • Christophe Ancey
    • 2
  • Patricio Bohorquez
    • 3
  1. 1.CREALP – Centre de Recherche en Environnement AlpinSionSwitzerland
  2. 2.School of Architecture, Civil and Environmental EngineeringEcole Polytechnique Fédérale de LausanneLausanneSwitzerland
  3. 3.Área de Mecánica de Fluidos, Departamento de Ingeniería Mecánica y MineraUniversidad de JaénJaénSpain

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