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Water table control on rill initiation and implications for erosional response

Special issue. Geomorphic response of mediterranean and arid areas to climate change

Auteurs :
BRYAN, R.B.
ROCKWELL, D.L.
BERKOWICZ, S.

Description :
On sloping sandy agricultural soil sites near Toronto, Canada, summer storms adequate to generate runoff occur frequently, but rill development occurs mainly in spring when snowmelt or rainfall-induced runoff occurs above frozen subsoil. This suggests that on low and moderate slopes on these soils rill initiation is controlled primarily by hydraulic impedance close to the surface, rather than critical hydraulic conditions in runoff. Laboratory flume experiments were carried out on 10 m slopes to test this hypothesis.


Type de document :
Congrès

Source :
IGU-GERTEC Conference, Jerusalem, Israel, 1995-05-13, Geomorphology (Amsterdam), issn : 0169-555X, 1998, vol. 23, n°. 2-4, p. 151-169, Collation : Illustration, Références bibliographiques : 40 ref.

Date :
1998

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier

Langue :
Anglais
Droits :
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