Results 181 to 190 of about 87,132 (213)

Using a landform evolution model to study ephemeral gullying in agricultural fields: the effects of rainfall patterns on ephemeral gully dynamics

Earth Surface Processes and Landforms, 2017
AbstractWater driven soil erosion is a major cause of land degradation worldwide. Ephemeral gullies (EGs) are considered key contributors to agricultural catchment soil loss. Despite their importance, the parameters and drivers controlling EG dynamics have not been adequately quantified.
David Hoober, Tal Svoray, Sagy Cohen
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Ephemeral gully channel width and erosion simulation technology

Natural Hazards, 2015
Concentrated surface runoff, such as associated with ephemeral gully channels, increases erosion and transfers fine sediment and associated agrichemicals from upland areas to stream channels. Ephemeral gully erosion on cropland may contribute up to 40 % or more of the sediment delivered to the edge of agricultural fields, significantly threatening the ...
R. L. Bingner, R. R. Wells, H. G. Momm, J. R. Rigby, F. D. Theurer   +4 more
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Spatially Distributed Sheet, Rill, and Ephemeral Gully Erosion

Journal of Hydrologic Engineering, 2015
AbstractEphemeral gully erosion seriously degrades agricultural soils, but few conservation planning tools adequately account for this form of erosion. To address this deficiency, this paper describes a spatially distributed adaptation of version 2 of the Revised Universal Soil Loss Equation and a new ephemeral gully erosion estimator.
S. M. Dabney, D. A. N. Vieira, D. C. Yoder, E. J. Langendoen, R. R. Wells, M. E. Ursic   +5 more
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A Measurement Method for Rill and Ephemeral Gully Erosion Assessments

Soil Science Society of America Journal, 2016
Core Ideas Photogrammetric techniques for spatiotemporal measure of topographic data Physical data for validation and development of soil
Robert R. Wells, Henrique G. Momm, Sean J. Bennett, Karl R. Gesch, Seth M. Dabney, Richard Cruse, Glenn V. Wilson   +6 more
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Influence of Ephemeral Gully Location Prediction on Soil Erosion Estimation

2021
<p>Predicting ephemeral gully (EG) location is essential for erosion modeling because it helps confine portions of the hillslope segment above locations that gully and channel soil loss processes dominate. In the Water Erosion Prediction Project (WEPP), the prediction of EG occurrence location influences the model results by shorting or ...
Chunmei Wang, Richard Cruse, Gelder Brian, Herzmann Daryl, Thompson Kelly, James David   +5 more
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Method to predict cropland ephemeral gully erosion

CATENA, 1999
Abstract Erosion of farmland due to concentrated flow is very severe on many unprotected fields across the United States. Small channels can turn into large gullies if not controlled. These small channels are routinely obliterated by tillage of the field and other routine farm operations only to be reformed again.
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CHARACTERISTICS OF ACTIVELY ERODING EPHEMERAL GULLIES IN AN EXPERIMENTAL CHANNEL

Transactions of the ASAE, 2000
The formation of ephemeral gullies can significantly increase soil losses from agricultural lands and severely impact farm productivity, yet few data exist on the physical characteristics of actively eroding gullies. The objectives of the current study were to examine the time variation of gully morphology and sediment load in response to a range of
null S. J. Bennett, null J. Casalí, null K. M. Robinson, null K. C. Kadavy   +3 more
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Gully erosion in the Siwalik Hills, Nepal: estimation of sediment production from active ephemeral gullies

Earth Surface Processes and Landforms, 2006
AbstractA simple field‐based monitoring programme was established in a small catchment (area 4·6 km2) to find the rates of gully erosion in the Siwalik Hills, Nepal. The rates are used to estimate the amount of sediment produced by gully erosion in the catchment.
Sohan K. Ghimire, Daisuke Higaki, Tara P. Bhattarai   +2 more
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Generation, transport and preservation of armoured mudballs in an ephemeral gully system

Geomorphology, 2008
Abstract Armoured mudballs have been reported from modern fluvial catchments and preserved in ancient (Quaternary and older) sedimentary sequences. Despite many descriptions of mudballs in the literature there is little systematic analysis of their physical properties, genesis, transport and deposition within alluvial sequences.
Anne Mather, Martin Stokes, Duncan Pirrie, Richard Hartley   +3 more
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Quantification Studies on Ephemeral Gully Erosion

Ephemeral gullies (EGs) are major contributors to sediment loss and land degradation on cultivated lands. EG is an important linear erosion feature, often occurring at mid-slope position, that can be greatly influenced by upslope and lateral inflow. This study quantified the ephemeral gully erosion influenced by the upslope and lateral inflow, and the ...
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