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Carlos V. Alonso

Tata Motors (United Kingdom)

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Sean J. Bennett

University at Buffalo, State University of New York

L. M. Gordon

New York State Energy Research and Development Authority

Robert R. Wells

Agricultural Research Service

Roger A. Kuhnle

National Sedimentation Laboratory

Neil L. Coleman

National Sedimentation Laboratory

F. Douglas Shields

National Sedimentation Laboratory

R. L. Bingner

National Sedimentation Laboratory

Shyam Prasad

Royal Devon & Exeter NHS Foundation Trust

Ronald L. Bingner

National Sedimentation Laboratory

Fred D. Theurer

Natural Resources Conservation Service

Cooperative Institutions

United States Department of Agriculture

Agricultural Research Service

National Sedimentation Laboratory

University of Mississippi

Purdue University West Lafayette

Universidade de São Paulo

Brazilian Society of Computational and Applied Mathematics

Universidade Brasil

National Soil Erosion Research Laboratory

Waters (United States)

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Simulating Ephemeral Gully Erosion in AnnAGNPS

Transactions of the ASABE (2007)

L. M. Gordon Sean J. Bennett Ronald L. Bingner Fred D. Theurer Carlos V. Alonso

Ephemeral gully erosion can cause severe soil degradation and contribute significantly to total soil losses in agricultural areas. Physically based prediction technology is necessary to assess the magnitude of these phenomena so that appropriate conservation measures can be implemented, but such technology currently does not exist. To address this issue, a conceptual and numerical framework is presented in which ephemeral gully development, growth, and associated soil losses are simulated within the Annualized Agricultural Non-Point Source (AnnAGNPS) model. This approach incorporates analytic formulations for plunge pool erosion and headcut retreat within single or multiple storm events in unsteady, spatially varied flow at the sub-cell scale, and addresses five soil particle-size classes to predict gully evolution, transport-capacity and transport-limited flows, gully widening, and gully reactivation. Single-event and continuous simulations demonstrate the model's utility for predicting both the initial development of an ephemeral gully and its evolution over multiple runoff events. The model is shown to recreate reasonably well the dimensions of observed ephemeral gullies in Mississippi. The inclusion of ephemeral gully erosion within AnnAGNPS will greatly enhance the model's predictive capabilities and further assist practitioners in the management of agricultural watersheds.

Ephemeral key

Gully Erosion

Bank erosion

10.13031/2013.23150

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Measurements and Models of Soil Loss Rates

M. A. Nearing M. J. M. Römkens L. D. Norton D. E. Stott F. E. Rhoton

In their Policy Forum “U.S. soil erosion rates—myth and reality” (14 Jul., p. [248][1]), Stanley Trimble and Pierre Crosson discuss sediment budgets and call attention to the large quantitative difference that exists between upland soil erosion and downstream sediment delivery ([1][2]). The

10.1126/science.290.5495.1300b

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Fuel economy benefit of Active Grille Shutters for real world, WLTP and RDE cycles

Salvio Chacko Dimitri Kalifronas Jesús Simón Carlos V. Alonso Antonio Solimene

World economy

10.47953/sae-pp-00201

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Numerical Study of the Maximum Boundary Shear Stress Induced by Raindrop Impact

Water Resources Research (1991)

David Hartley Carlos V. Alonso

The magnitude, position, and timing of the instantaneous maximum boundary shear stress caused by a raindrop on a shallow pool of water are investigated using a series of computer simulation experiments in which the Navier‐Stokes equations are solved numerically. A dimensional analysis defines a set of parameters involving fluid properties and initial conditions relevant to the problem. Numerical simulations are performed over ranges of these parameters using a generic, two‐dimensional, incompressible, free surface flow model. Results of the simulations are summarized in simple algebraic relationships which serve to clarify the relative importance of the parameters. The algebraic relationships also serve as an efficient substitute for the numerical model in the estimation of the magnitude, position, and timing of the maximum boundary shear stress. Laboratory measurements of water‐droplet‐induced shear stress are used to demonstrate the validity of the algebraic relationships.

Algebraic equation

Position (finance)

10.1029/91wr01219

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A sediment transport capacity formulation for application to large channel networks

Journal of Soil and Water Conservation (1995)

Jürgen Garbrecht Roger A. Kuhnle Carlos V. Alonso

ABSTRACT: A sediment transport capacity algorithm for estimating large scale propagation and redistribution of sediments in channel networks is proposed. The algorithm computes transport capacity by size fraction using four established sediment transport equations with modified critical shear stress to account for the equal mobility property of sediment mixtures. The algorithm was tested against a large number of measured data and produced consistent results for a wide range of flow and sediment characteristics. The broad applicability of the algorithm makes it suitable for estimation of sediment transport capacity in large channel networks with spatial variability in channel, flow, and sediment characteristics.

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Discussion of “Jet-Forced Circulation in Water-Supply Reservoirs”

Journal of the Hydraulics Division (1975)

Carlos V. Alonso

Circulation (fluid dynamics)

Water jet

Water circulation

10.1061/jyceaj.0010537

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Closure to “ Two‐Dimensional Channel Flows over Rough Surfaces ” by Coleman and Carlos V. Alonso (February, 1983)

Journal of Hydraulic Engineering (1984)

Neil L. Coleman Carlos V. Alonso

Closure (psychology)

10.1061/(asce)0733-9429(1984)110:7(1010)

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Analysis of three-dimensional flows into draintile

Journal of Hydrology (1981)

Shyam Prasad Carlos V. Alonso Donn G. DeCoursey

10.1016/0022-1694(81)90137-2

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Reliability-centered maintenance: analyzing failure in harvest sugarcane machine using some generalizations of the Weibull distribution

arXiv (Cornell University) (2017)

Pedro Luiz Ramos Diego Tarley Ferreira Nascimento Camila Cocolo Márcio José Nicola Carlos V. Alonso

In this study we considered five generalizations of the standard Weibull distribution to describe the lifetime of two important components of harvest sugarcane machines. The harvesters considered in the analysis does the harvest of an average of 20 tons of sugarcane per hour and their malfunction may lead to major losses, therefore, an effective maintenance approach is of main interesting for cost savings. For the considered distributions, the mathematical background is presented. Maximum likelihood is used for parameter estimation. Further, different discrimination procedures were used to obtain the best fit for each component. At the end, we propose a maintenance scheduling for the components of the harvesters using predictive analysis.

Component (thermodynamics)

10.48550/arxiv.1712.03304

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Suspended sediment dynamics at high and low flows in an agricultural watershed

Nira L. Salant Marwan A. Hassan Carlos V. Alonso

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