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Concept of a single device for simultaneous simulation of wind and water erosion in the field Wolfgang Fister1
 

Summary: Concept of a single device for simultaneous simulation of wind and water erosion in the field
Wolfgang Fister1
and Reinhard-G. Schmidt2
(1) Trier University, Department of Physical Geography, Campus II, Behringstr., 54286 Trier,
Germany, e-mail: w.fister@gmx.de
(2) Trier University, Department of Physical Geography, Campus II, Behringstr., 54286 Trier,
Germany, e-mail: schmidt@uni-trier.de
Summary
Soil degradation and desertification are often caused by wind and water erosion. For many years
researchers have been studying both processes separately. Recent field researches in semi-arid
areas have shown that measuring both processes together is necessary for future quantification and
prediction of soil desertification. Unfortunately no applicable field equipment has been developed
that is capable of measuring both processes at once.
The main objective of this study is to investigate both processes simultaneously with a single
device operational in the field. Firstly a small portable wind tunnel (3 m long, 0.7 m high, and
0.7 m wide) with a plot size of 2 m≤ was constructed and calibrated. Secondly a rainfall simulator
with four pressure nozzles positioned at 0.35 m, 1.1 m, 1.85 m and 2.6 m in flow direction of the
tunnel will be incorporated to generate a rainfall intensity of 40 to 100 mmh-1
. A gutter system is
used to catch the runoff from the plot. Attached to it are two wedge-shaped sediment traps and a

  

Source: Amrhein, Valentin - Zoologisches Institut, Universitšt Basel

 

Collections: Environmental Sciences and Ecology