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| Titel |
Patterns of grain-size temporal variation of sediment transported by overland flow associated with moving storms: interpreting soil flume experiments |
| VerfasserIn |
J. L. M. P. Lima, P. A. Dinis, C. S. Souza, M. I. P. Lima, P. P. Cunha, J. M. Azevedo, V. P. Singh, J. M. Abreu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 9 ; Nr. 11, no. 9 (2011-09-27), S.2605-2615 |
| Datensatznummer |
250009681
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| Publikation (Nr.) |
 copernicus.org/nhess-11-2605-2011.pdf |
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| Zusammenfassung |
| This study describes and interprets the evolution of
grain-size distribution of sediment yields generated in an experimental soil
flume subjected to downstream and upstream moving rain storms. Results of
laboratory experiments show that downstream moving storms cause more soil
loss than do upstream moving storms. The pattern of sediment grain-size
evolution in time during a runoff event exhibits a clear dependence on the
direction of storm movement. A strong relationship between overland flow
discharge and mean sediment size is found. Nevertheless, the mean grain-size
of sediments transported during the rising limb of the hydrograph is coarser
than during the recession limb of the hydrograph. This is more marked for
downstream moving storms. |
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