River Meanders--theory of Minimum Variance

River Meanders--theory of Minimum Variance PDF

Author: Walter Basil Langbein

Publisher:

Published: 1966

Total Pages: 24

ISBN-13:

DOWNLOAD EBOOK →

The geometry of a meander is that of a random walk whose most frequent form minimizes the sum of the squares of the changes in direction in each unit length. Changes in direction closely approximate a sine function of channel distance. Depth, velocity, and slope are adjusted so as to decrease the variance of shear and the friction factor in a meander over that in an otherwise comparable straight reach of the same river.

River Dynamics

River Dynamics PDF

Author: Bruce L. Rhoads

Publisher: Cambridge University Press

Published: 2020-04-29

Total Pages: 544

ISBN-13: 1108173780

DOWNLOAD EBOOK →

Rivers are important agents of change that shape the Earth's surface and evolve through time in response to fluctuations in climate and other environmental conditions. They are fundamental in landscape development, and essential for water supply, irrigation, and transportation. This book provides a comprehensive overview of the geomorphological processes that shape rivers and that produce change in the form of rivers. It explores how the dynamics of rivers are being affected by anthropogenic change, including climate change, dam construction, and modification of rivers for flood control and land drainage. It discusses how concern about environmental degradation of rivers has led to the emergence of management strategies to restore and naturalize these systems, and how river management techniques work best when coordinated with the natural dynamics of rivers. This textbook provides an excellent resource for students, researchers, and professionals in fluvial geomorphology, hydrology, river science, and environmental policy.

Fluvial Meanders and Their Sedimentary Products in the Rock Record (IAS SP 48)

Fluvial Meanders and Their Sedimentary Products in the Rock Record (IAS SP 48) PDF

Author: Massimiliano Ghinassi

Publisher: John Wiley & Sons

Published: 2019-01-22

Total Pages: 602

ISBN-13: 1119424461

DOWNLOAD EBOOK →

The sinuous form and peculiar evolution of meandering rivers has long captured the imagination of people. Today, meandering rivers exist in some of the most densely populated areas in the World, where they provide environmental and economic wealth and opportunities, as well as posing hazards. Through geological time, the ancestors of these modern meanders built deposits that are now host to mineral resources, groundwater, and hydrocarbons. This Special Publication illustrates the breadth of current research on meandering rivers and their deposits. The collection of research papers demonstrates the state of science on fluvial process–product relationships. The articles cover fundamental and applied studies of both modern and ancient rivers, are based on state-of-the-art technology, include complementary philosophical approaches, and span a wide range of spatial and temporal scales. This book includes some of the most recent advances in the study of the morphodynamics and sedimentology of meandering rivers, and is an important resource for those who want to investigate fluvial systems and their deposits.