Changes in streambank erodibility and critical shear stress due to subaerial processes along a headwater stream, southwestern Virginia, USA

Autor:	Theresa M. Wynn, D. H. Vaughan, M. B. Henderson
Rok vydání:	2008
Předmět:	Hydrology Subaerial Soil water Erosion Precipitation Stream restoration Cycling Bulk density Water content Geology Earth-Surface Processes
Zdroj:	Geomorphology. 97:260-273
ISSN:	0169-555X
DOI:	10.1016/j.geomorph.2007.08.010
Popis:	Despite more than 40 yr of research attributing temporal changes in streambank erosion rates to subaerial processes, little quantitative information is available on the relationships between streambank erodibility (kd) and critical shear stress (τc) and the environmental conditions and processes that enhance streambank erosion potential. The study goal was to evaluate temporal changes in kd and τc from soil desiccation and freeze–thaw cycling. Soil erodibility and τc were measured monthly in situ using a multiangle, submerged jet test device. Soil moisture, temperature, and bulk density as well as precipitation, air temperature, and stream stage were measured continuously to determine changes in soil moisture content and state. Pairwise Mann–Whitney tests indicted kd was 2.9 and 2.1 times higher (p
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eefa065884b6a3cd6af819594f2f0863 https://doi.org/10.1016/j.geomorph.2007.08.010 Zobrazit plný text záznamu Full Text from ScienceDirect