Long-term biogenic soil mixing and transport in a hilly, loess-mantled landscape : Blue Mountains of southeastern Washington

Auteur(s) et Affiliation(s)

WALTHER, S.C.

Dep. of Geological Sciences, Univ. Oregon, Eugene, Etats-Unis

ROERING, J.J.

Dep. of Geological Sciences, Univ. Oregon, Eugene, Etats-Unis

ALMOND, P.C.

Dep. of Soil and Physical Sciences, Univ., Lincoln, Nouvelle-Zelande

HUGHES, M.W.

Dep. of Soil and Physical Sciences, Univ., Lincoln, Nouvelle-Zelande

Description :
To help constrain the long-term pattern and rate of soil mixing and transport in forests, the AA. analyzed the distribution of tephra grains in soil along a hillslope transect in the Blue Mountains. Deposited within a loess mantle, tephra associated with the eruption of Mt Mazama serves as a marker bed for estimating erosion and transport rates. The main components of the study include using topography and the distribution of tephra to test and calibrate a soil transport model for a forested ecosystem. The results are important for interpreting how vegetation affects rates of sediment production and the evolution of topography over geomorphic timescales.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2009, vol. 79, n°. 2, p. 170-178, nombre de pages : 9, Références bibliographiques : 1 p.

Date :
2009

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais