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Influence of bed patchiness, slope, grain hiding, and form drag on gravel mobilization in very steep streams
Influence of bed patchiness slope grain hiding form drag on gravel mobilization very steep streams
2014/4/8
Steep streams are a major portion of channel networks and provide a link to transport sediment from hillslopes to lower gradient rivers. Despite their importance, key unknowns remain, perhaps foremost...
DETERMINATION OF THE DEGREE OF GRAVEL AGGREGATE-BITUMENCOVERAGE BY MULTI-DIRECTIONAL REFLECTANCE MEASUREMENTS
Segmentation/classification laser illumination multi-directional
2014/4/28
The paper describes the determination of the percentage area of bitumen on partly covered aggregate. This task is a typical issue in material testing in road construction. The asphalt components bitum...
Self-potential investigations of a gravel bar in a restored river corridor
Self-potential investigations gravel bar restored river corridor
2011/3/15
Self-potentials (SP) are sensitive to water fluxes and concentration gradients in both saturated and unsaturated geological media, but quantitative interpretations of SP field data may often be hinder...
Location of the River Euphrates in the Late Miocene;dating of terrace gravel at Shireen,Syria
Location of the River Euphrates Late Miocene terrace gravel
2009/10/22
We report gravel of the River Euphrates, capped by basalt that is Ar-Ar dated to ~9 Ma, at Shireen in northern Syria. This gravel, preserved by the erosion-resistant basalt, allows us for the first ti...
Chert Gravel and Neogene Drainage in East-central Kansas
Chert Gravel Neogene Drainage East-central Kansas
2009/10/21
Eastern Kansas has an active geomorphic regime dominated by stream erosion, which is strongly influenced by bedrock structure. Alluvial deposits of chert gravel of presumed Neogene age are widespread ...
Effet of Elevation above the Waterline on the Growth of Current-year Salix gracilistyla Seedlings on a Gravel Bar
current year seedlings elevation above waterline growth inundation duration Salix gracilistyla
2009/8/24
To clarify the effect of the gradient in inundation duration and substrate particle size composition with elevation on the growth of Salix gracilistyla seedlings, we compared tree height, root depth, ...
Sand control techniques (Screen-less sand control and Through-tubing gravel pack)
sand control screen-less through-tubing gravel pack TTGP
2009/5/8
Techniques of sand control are roughly divided into three types. One is control of production rate, next is using screens such as gravel pack, and the last technique is screen-less method.
Japan Pet...
The Neogene Xiyu Formation, a diachronous prograding gravel wedge at front of the Tianshan: Climatic and tectonic implications
Xiyu Formation magnetostratigraphy Tianshan gravel wedge progradation shortening rates
2014/4/15
The Tarim and Junggar basins in central Asia are capped by a thick pile of conglomerates, called the Xiyu Formation, that are commonly linked to a change in climate and/or accelerated uplift near the ...
Estimation of carrying capacity of slag and gravel forest road pavements
forest road soil basement road carrying capacity pavement deflection gravel pavement slag pavement
2009/2/7
The objective of the study was to estimate the carrying capacity of forest roads with slag and gravel pavements. Deformation module and elastic deflection were used as characteristic parameters of r...
Location of the River Euphrates in the Late Miocene; dating of terrace gravel at Shireen, Syria
Location of the River Euphrates the Late Miocene dating of terrace gravel at Shireen Syria
2010/9/28
We report gravel of the River Euphrates, capped by basalt that is Ar-Ar dated to ~9 Ma, at Shireen in northern Syria. This gravel, preserved by the erosion-resistant basalt, allows us for the first ti...
Characteristics and Emission Factors of Fugitive Dust at Gravel Processing Sites
fugitive dust emission factor gravel processing sites dimensionless analysis
2016/3/30
Particles emitted from gravel processing sites have severely worsened ambient air quality. This study
analyzed the fugitive dust emission characteristics at selected pollution sources using several k...
2D NUMERICAL SIMULATION OF WATE R FLOW AND SEDIMENT TRANSPORT FOR SANDY AND GRAVEL SHOAL REACHES IN THE DOWNSTREAM OF TGP
2D NUMERICAL SIMULATION WATE R FLOW SEDIMENT TRANSPORT SANDY GRAVEL SHOAL REACHES DOWNSTREAM OF TGP
2013/7/19
In this paper, the characteristics of water flow and sediment transport in a typical sandy and gravel watercourse of the middle reaches of Yangtze River is investigated using a 2D mathematical model...