Revue bibliographique : Erosion et Transport solide
Revue bibliographique : Erosion et Transport solide

Author: Omar Elahcene

Publisher: Editions Universitaires Europeennes

Published: 2014-07-28

Total Pages: 68

ISBN-13: 9783841736680

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L'erosion hydrique et le transport solide menacent gravement les potentialites en eau et en sol et devient de plus en plus dramatique. Du fait de l'envasement des retenues l'infrastructure hydraulique algerienne est amputee annuellement d'un potentiel de reserve en eau equivalent a 20 millions de m3. Ceci, nous amene a intervenir rapidement et efficacement, et ce par la bonne quantification du transport solide en utilisant des formules mathematiques fiables. Bien que l'estimation de l'erosion et du transport solide soit effectuee depuis plusieurs annees, les connaissances sur ces phenomenes sont encore tres partielles, les donnees peu fiables et beaucoup d'incertitudes subsistent. La resolution de ce probleme doit autant son importance a la prediction ou a l'evaluation efficace de l'erosion et du transport solide et pour cela, la recherche de la situation optimale exige du projecteur une bonne connaissance de la theorie des phenomenes et une vision synthetique des differentes disciplines en cause.

Modeling and Practice of Erosion and Sediment Transport under Change
Modeling and Practice of Erosion and Sediment Transport under Change

Author: Mohamed Meddi

Publisher: MDPI

Published: 2019-09-17

Total Pages: 212

ISBN-13: 3039214314

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Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.