Results 211 to 220 of about 119,769 (265)

Erosion of cohesive sediments as a rate process

Ocean Engineering, 1979
Abstract The problems associated with the erosion of cohesive sediment in the marine environment are well recognized. However, the mechanisms of controlling erosion are not well understood. The research to be presented was directed at characterizing the erosion resistance of cohesive sediment through the application of rate process and double layer ...
William E. Kelly, Vito A. Nacci, Ronald C. Gularte   +2 more
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Erosion Rates of Cohesive Soils

Journal of the Hydraulics Division, 1978
The objective of this paper is to describe the effects of the principal physical and chemical factors on the rate of erosion of saturated cohesive soils. It is hoped that this work stimulates more comprehensive laboratory and field measurements of the erosion of cohesive soils with a view of obtaining relationships for the erodibility in terms of ...
Ranjan Ariathurai, Kandiah Arulanandan
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On the time-dependence of the erosion rate—a probabilistic approach to erosion

Theoretical and Applied Fracture Mechanics, 1986
Abstract A highly simplified model is presented of the erosion process under liquid impact. The theory outlined allows the mathematical expectation of the erosion rate as a function of time (erosion curve) to be predicted. This simplified theory of erosion is based on the statistical nature of the repetitive loading due to liquid impact.
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Responses of chemical erosion rates to transient perturbations in physical erosion rates, and implications for relationships between chemical and physical erosion rates in regolith-mantled hillslopes

Earth and Planetary Science Letters, 2017
Abstract Understanding the relationship between chemical erosion rates ( W ) and physical erosion rates ( E ) is of wide interest due to their roles in driving landscape evolution, supplying nutrients to soils and streams, and modulating the global carbon cycle.
Ken L. Ferrier, Nicole West
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Erosion Rates Near Rome, Italy

Science, 1968
Before man's intensive use of the land the rates of erosion near Rome, Italy, were approximately 2 to 3 centimeters per thousand years. With intensive occupation by man the rates have increased by an order of magnitude.
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Calculation of Rates of Gully Erosion

Journal of Geological Education, 1980
Site measurements and collection of rainfall and runoff data will provide an earth science student with the necessary information to calculate stream discharges and approximate rates of erosion within a small drainage basin. Drainage ditches (gullys) associated with shopping center parking lots can provide a readily accessible area to monitor. The area
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STUDY OF EROSIVE WEAR RATES

Нефтяная провинция, 2019
В процессах добычи и подготовки газа эрозия металла может происходить под действием песка, выносимого из продуктивного пласта при определенных режимах эксплуатации скважин. Определение степени влияния механических примесей на работу оборудования и газосборных сетей является сложной задачей.
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An analytical model for estimation of internal erosion rate

Geomechanics and Geoengineering, 2019
Estimating erosion rate of solid particles in a porous medium is of interest to geotechnical engineers; which use analytical or numerical models for this purpose. Constitutive law of erosion is a key component in the development of such models. These models estimate the solid erosion rate as a function of various modelling parameters such as fluid ...
S. Azadbakht, A. Nouri, D. Chan
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Some Rates of Regional Erosion

The Journal of Geology, 1961
Past and present rates of regional erosion are calculated for the Appalachian, Mississippi, and Himalayan regions. The present rate of erosion of the Mississippi region is about the same as the average rate during the last $150 X10^{6}$ years. The average rate of erosion of the Appalachian region during the last $125 X10^{6}$ years is 7.8 times as fast
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Effects of Bulk Density on Sediment Erosion Rates

Water, Air, and Soil Pollution, 1997
By means of a recently developed flume, sediment erosion rates as a function of shear stress and with depth in the sediments have previously been determined for relatively undisturbed sediments from several rivers and lakes. These experiments demonstrated that erosion rates depended on at least the following parameters: bulk density (or water content ...
Rich Jepsen, Jesse Roberts, Wilbert Lick
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