Richard J. S. Whitehouse

Bio: Richard J. S. Whitehouse is an academic researcher from HR Wallingford. The author has contributed to research in topics: Sediment transport & Sediment. The author has an hindex of 27, co-authored 96 publications receiving 2698 citations. Previous affiliations of Richard J. S. Whitehouse include University of Hull & New College London.

Scour at Marine Structures: A Manual for Practical Applications

Abstract: * Introduction * General principles of scour * Physical modelling of scour * Computational modelling of local scour * The wave-current climate * Preventive or remedial measures for scour * Scour case studies

Dynamics of estuarine muds : a manual for practical applications

Abstract: Sediment properties Hydrodynamics Erosion Suspension of mud in the water column Fluid mud Transport rate Deposition Consolidation Mixtures of mud and sand Mathematical modelling Intertidal processes Case studies - infill of harbour basin Accretion in a channel Sediment dispersion from a dredge disposal site

Dynamics of Estuarine Muds

Abstract: The ability to predict the movement of cohesive sediment within coastal, estuarine or inland waters has a significant economical and ecological importance in the development of new engineering works and the maintenance of existing installations. This book covers the main processes of cohesive sediment behaviour, namely erosion, transport, deposition and consolidation. Sub-sections are given on knowledge and procedure where possible. The knowledge section present data intended to show the practising engineer which parameters are important in each of the above processes. The procedure section gives practical methods for estimating the rates of erosion, transport, deposition and consolidation based on knowledge of the site conditions. A companion to Dynamics of marine sands, this book is aimed at the practising engineer who is involved in coastal, estuarine or inland water construction work. Format: A5 hardbound, 210 pages. Contents: Illustrations; 1.0 Introduction; 2.0 Sediment properties; 3.0 Hydrodynamics; 4.0 Erosion; 5.0 Suspension of mud in the water column; 6.0 Fluid mud; 7.0 Transport rate; 8.0 Deposition; 9.0 Consolidation; 10.0 Mixtures of mud and sand; 11.0 Mathematical modelling; 12.0 Intertidal processes; 13.0 Case studies; References.

Boundary Layer Theory

Abstract: The boundary layer equations for plane, incompressible, and steady flow are $$\matrix{ {u{{\partial u} \over {\partial x}} + v{{\partial u} \over {\partial y}} = - {1 \over \varrho }{{\partial p} \over {\partial x}} + v{{{\partial ^2}u} \over {\partial {y^2}}},} \cr {0 = {{\partial p} \over {\partial y}},} \cr {{{\partial u} \over {\partial x}} + {{\partial v} \over {\partial y}} = 0.} \cr }$$

Unified view of sediment transport by currents and waves. I: Initiation of motion, bed roughness, and bed-load transport

Abstract: Attention is given to the properties of sediment beds over the full range of conditions (silts to gravel), in particular the effect of fine silt on the bed composition and on initiation of motion (critical conditions) is discussed. High-quality bed-load transport data sets are identified and analyzed, showing that the bed-load transport in the sand range is related to velocity to power 2.5. The bed-load transport is not much affected by particle size. The prediction of bed roughness is addressed and the prediction of bed-load transport in steady river flow is extended to coastal flow applying an intrawave approach. Simplified bed-load transport formulas are presented, which can be used to obtain a quick estimate of bed-load transport in river and coastal flows. It is shown that the sediment transport of fine silts to coarse sand can be described in a unified model framework using fairly simple expressions. The proposed model is fully predictive in the sense that only the basic hydrodynamic parameters (dep...

The State of the World’s Beaches

Abstract: Coastal zones constitute one of the most heavily populated and developed land zones in the world. Despite the utility and economic benefits that coasts provide, there is no reliable global-scale assessment of historical shoreline change trends. Here, via the use of freely available optical satellite images captured since 1984, in conjunction with sophisticated image interrogation and analysis methods, we present a global-scale assessment of the occurrence of sandy beaches and rates of shoreline change therein. Applying pixel-based supervised classification, we found that 31% of the world’s ice-free shoreline are sandy. The application of an automated shoreline detection method to the sandy shorelines thus identified resulted in a global dataset of shoreline change rates for the 33 year period 1984–2016. Analysis of the satellite derived shoreline data indicates that 24% of the world’s sandy beaches are eroding at rates exceeding 0.5 m/yr, while 28% are accreting and 48% are stable. The majority of the sandy shorelines in marine protected areas are eroding, raising cause for serious concern.

Heterogeneity in Sedimentary Deposits: A Review of Structure‐Imitating, Process‐Imitating, and Descriptive Approaches

Abstract: Numerical models that solve governing equations for subsurface fluid flow and transport are commonly applied to analyze quantitatively the effects of heterogeneity. These models require maps of spatially variable hydraulic properties. Because complete three-dimensional information about hydraulic properties is never obtainable, numerous methods have been developed to interpolate between data values and use geologic, hydrogeologic, and geophysical information to create images of aquifer properties. Image creation approaches fall into three general categories: structure-imitating, process-imitating, and descriptive. Structure-imitating methods rely on one or more of the following to constrain the geometry of spatial patterns in geologic media: correlated random fields, probabilistic rules, and deterministic constraints developed from facies relations. Structure-imitating methods include spatial statistical algorithms and geologically based sedimentation pattern-matching approaches. Process-imitating models include aquifer model calibration methods and geologic process models. Aquifer model calibration methods use governing equations for subsurface fluid flow and transport to relate hydraulic properties to heads and solute information through history and steady state data matching. Geologic process models combine fundamental laws of conservation of mass and momentum with sediment transport equations to simulate spatial patterns in grain size distributions. At the sedimentary basin scale, multiprocess models include thermomechanical mechanisms of basin subsidence. Descriptive methods couple geologic observations with facies relations to divide an aquifer into zones of characteristic hydraulic properties. All approaches are capable of reproducing heterogeneity over a range of scales and considering some types of geologic information. Some approaches are strictly spatial while some are linked to the time evolution of sedimentation. Some approaches can be conditioned on measurements. Recent advances aimed at infusing geologic information into images of the subsurface include extracting more information from sedimentological facies models, incorporating qualitative geologic information into random field generators and simulating depositional processes. Classes of research missing from the literature include multiprocess models that incorporate diagenesis and three-dimensional surface water flow, hybrid methods that combine features of existing approaches, and approaches that can make use of all available geologic, geophysical, and hydrologic data.