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| Titel |
Experimental rivers: the inevitability of Lacey's law. |
| VerfasserIn |
François Métivier, Olivier Devauchelle, Eric Lajeunesse |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250133734
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| Publikation (Nr.) |
 EGU/EGU2016-14377.pdf |
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| Zusammenfassung |
| Small-scale model experiments have been used throughout the 20th century to address
various problems in alluvial morphology, such as stream braiding or meandering. An analysis
of the morphology of these experimental streams produced so far reveals that they all share
common properties, despite different experimental settings. In particular, all the streams
develop channels which size accords with Lacey’s law. This property accords with the
spontaneous generation of channels where the bed sediment is close to the threshold of
motion. Deviation from threshold channel occurs mostly for braided streams. It
is best seen in the aspect ratio of individual channels. Finally, we discuss some
consequences of this “near treshold” behaviour and is application to natural streams. |
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