Randy d klein (5 résultats)

PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000.

PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000.

HRD. Etat : New. New Book. Shipped from UK. Established seller since 2000.

HRD. Etat : New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Etat : New. Print on Demand. This book examines the stream adjustments following the excavation of road fill and culverts from stream crossings in Redwood National Park after a watershed restoration program was initiated in 1978. The excavated channels were then studied for erosion and armor size adjustments over a winter season in 1982. The author's primary intent is to calculate the relative importance of on-site variables contributing to these channel adjustments and to create testable criteria for the design of more stable excavations. Specific variables studied include the stream's hydraulics, stream bank material, bank material clay content, coarse fragment content, organic debris left behind after excavation, and particle size distribution of the streambed. The author employs advanced statistical analysis to evaluate this complex system of variables and their effects on erosion and armor size. The study reveals that the input of stream power (a product of stream discharge and gradient) and the resistance provided by coarse organic material are the primary factors influencing channel stability. The author concludes by suggesting that understanding these variables and their effects should help land managers and geomorphologists improve the stability of stream excavations during watershed restoration. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…