Hydrodynamics And Sediment Dynamics In Wave Driven Environments

Hydrodynamics and sedimentation in wave-dominated coastal environments

This book treats the subject of sediment transport in the marine environment, covering transport of noncohesive sediment by waves and currents in- and outside the surf zone. It can be read independently, but a background in hydraulics and basic wave mechanics is required. The primary aim of the book is to describe the physical processes of sediment transport and how to represent them in mathematical models. The book can be divided in two main parts; in the first, the relevant hydrodynamic theory is described. This part contains a review of elementary theory for water waves, chapters on the turbulent wave boundary layer and the turbulent interaction between waves and currents, and finally, surf zone hydrodynamics and wave driven currents. The second part covers sediment transport and morphological development.The part on sediment transport introduces the basic concepts (critical bed shear stress, bed load, suspended load and sheet layer, near-bed concentration, effect of sloping bed); it treats suspended sediment in waves and current and in the surf zone, and current and wave-generated bed forms. Finally, the modelling of cross-shore and long-shore sediment transport is described together with the development of coastal profiles and coastlines.

These proceedings contain papers by some of the world's leading experts in the analytical and numerical modelling of sediment transport, its measurement on site and in the laboratory, river and coastal morphology, and similar issues. These topics are of fundamental importance in many areas (such as the silting or erosion of coasts and rivers, and the design of fluvial or coastal structures) and should consequently be of interest to a wide audience in engineering, geology and related disciplines. Contents:Structure of Turbulence Over Two-Dimensional Dunes (S J Bennett & J L Best)Numerical Study on Transition to Turbulence in a Wave Boundary Layer (H Tanaka & A Sana)Numerical Modelling of Three-Dimensional Cohesive Sediment Transport in an Estuarine Environment (L Cancino & R Neves)Settlement: A Sedimentary Process (M Sanchez & A Grovel)Mass Transport Over Rippled Beds (F Marin & J F A Sleath)Laboratory Experiments on Sediment Erosion Induced by Partially Standing Waves (V Rey et al)The Behaviour, Interaction and Effect of Depositing Grains (M V C Wheeler & B B Willetts)Breaking Waves-Plunging Point and Its Effects (Y Yüksel & M S Kapdasli)A Field Study of Wave-Current Interactions Over a Rippled Sand Bed (A Hannay et al)Sediment Suspension by Turbulence in the Surf Zone (G G Smith & G P Mocke)On Nuclear Gauging of Natural Streams (G S Tazioli)and other papers Readership: Engineers, geographers and geologists.keywords:

This collection contains 109 papers presented at the Fourth Conference on Coastal Dynamics, held in Lund, Sweden, June 11-15, 2001.