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(Article of periodic en Anglais - 2014)

Document title

Slope-area thresholds of road-induced gully erosion and consequent hillslope–channel interactions

Authors(s) and Affiliation(s)

KATZ H.A. (1) ; DANIELS J.M. (1) ; RYAN S. (2) ;
(1) Dept. of Geography and the Environment, Univ., Denver, ETATS-UNIS
(2) USDA Forest Service, Rocky Mountain Research Station, Fort Collins, ETATS-UNIS

Abstract

Pikes Peak Highway is a partially paved road between Cascade, Colorado and the summit of Pikes Peak. Significant gully erosion is occurring on the hillslopes. As a result, large quantities of sediment are transported to surrounding valley networks causing significant damage to water quality and aquatic, wetland, and riparian ecosystems. This study establishes the slope/drainage area threshold for gullying along Pikes Peak Highway and a cesium-137 based sediment budget highlighting rates of gully erosion and subsequent valley deposition for a small headwater basin. The threshold for gullying along the road is evaluated and the road surface reduces the critical slope requirement for gullying compared to natural drainages in the area. Total gully volume for the 20 gullies along the road and net valley deposition is estimated unaccounted for by gullying are estimated. The hillslope–channel interface is decoupled with minimal downstream sediment transport which results in significant local gully-derived sedimentation

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2014, vol. 39, no3 [pp. 285-295]

Bibliographic references : 1 p.

Collation : 10 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3443

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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