Stefan Wirtz Vom Fachbereich VI (Geographie/Geowissenschaften ...

Experimentelle Rinnenerosionsforschung vs. Modellkonzepte – Quantifizierung der hydraulischen und erosiven Wirksamkeit von Rinnen
Fig.9: Sediment concentrations of the 3 rill experiments: MP=Measuring point, n.D.= no data.
In the first experiment, the maximum sediment concentrations are 2,06 g l -1 in the first run
and 2.31 g l -1 in the second run. Minimum values are 0 g l -1 (no sediment detected) in the first
run and 0.05 g l -1 in the second run. The averages are 0.78 g l -1 and 0.69 g l -1 .
The second experiment shows a maximum sediment concentration of 2.37 g l -1 in the first and
6.31 g l -1 in the second run, the minimum values are 0 g l -1 for the first run and 0.3 g l -1 for the
second run. The averages are 0.82 and 2.21 g l -1 .
In the third experiment, the last measuring point is not reached by the water in the first run, so
no samples could be collected there. regarding the first two measuring points, the first run
shows a maximum of 2.31 g l -1 , a minimum of 0 g l -1 and an average of 0.83 g l -1 . In the
second run, all three measuring points offered samples. The maximum value is 1.59 g l -1 , the
minimum 0 g l -1 and the average 0.88 g l -1 .
Concerning the sediment concentrations, high differences are to notice. The highest value is
reached with 6.31 g l -1 in experiment 2b. But there are also several samples where no
sediment could be detected. The averages of the experiments mostly range below 1 g l -1 that is
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