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A meander, in general, is a bend in a sinuous watercourse or river. A meander forms when moving water in a stream erodes the outer banks and widens its valley, and the inner part of the ... It is ch...

This part of a sand dune is characterized by a pronounced slope



This part of a sand dune faces the wind - Answers.com


windward side ... What Part of a sand dune is characterized by a pronounced slope? The upwind direction of a sand dune has a gentle slope. A steep slope is on the downwind ...

17 Types of Aeolian Sand Dunes and Their Formation


[5] and arid areas [6], more than 99% of all sand dunes are located in deserts. Less than 1% ... RDP/DP is low, wind energy is distributed on more than one slope of the dune and the .... slip-faces, pronounced crests and a much higher aspect ratio (1.3 > h/L > 0.3). .... Consequently, sand will be eroded from the upper part of.

Calculation of dune morphology - Tjerry - 2005 - Journal of ...


Nov 30, 2005 ... In nature, solitary sand dunes are also observed, [e.g., Termes, 1984; Engelund, .... Downstream of the dune crest, the flow separates and the slope of the sand wave is here ... In the upper part of the figure, the streamline pattern is shown. ..... rate and make the peak in sediment-transport more pronounced.

Slope effect on saltation over a climbing sand dune - Engineering ...


Keywords: sand; dunes; saltation; sediment transport; eolian features; wind transport. 1. ... field-based, have assessed the effect of slope on the initiation of particle .... Saltation is characterized mostly by grains in the ... Samples from various parts of the climbing dune .... the deficiency of the pronounced coarse mode in the.

Sand Dune Ridge Alignment Effects on Surface BRF over the Libya ...


Feb 3, 2015 ... The topography is characterized with the 30 m resolution ASTER digital ... on the surface reflectance field, which is more pronounced for high Sun zenith angles. .... Note that, whatever the ROI size, the maximum sand dune slope or .... In the second part of this study, sand dune ridge alignment effects on ...

Sand Dunes | SaharaSafaris.org


Various name for the fields of sand dunes in the Sahara ... Watch how airborne sand grains fall and cascade down the steep lee slope in ... The forms remain a plenty and very different, but could be characterized by few ... Seif; Transverse; Megaseif; Sand-sheet; Stringer; Sand-sea; Helaly (barchan, pronounced: bar- kaan) ...

The Ecological Relations of the Vegetation on the Sand Dunes of ...


PART I.- GEOGRAPHICAL RELATIONS OF THE DUNE. FLORAS. ... that the previous ecological studies of sand-dune floras have been carried on ..... Nearly all of the dune societies are characterized by a high degree of .... sand is also slight, nor is there such pronounced capillarity as is ... The direction of slope is a mat-.

Modelling a Dune Field


Feb 1, 2008 ... However, the stability of the dune field depends on the sand flux balance of a single ... A dune is characterized by a single scalar quantity, e.g. its width w, and its position (x, y) ... windward slope. ..... We observe very pronounced ... as obtained after averaging over all dunes in the central part of the field and.

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What part of a sand dune is characterized by a gentle slope


The gentle slope is in the upwind direction. The downwind direction has a steep slope called a ... The pronounced slope of a sand dune is called a slip face.

Distinctions and Uses of Stratification Types in the Interpretation of ...


large part, the controversy was justified and has ... is the result of transport of sand on dunes by a ..... translatent strata are characterized by thin, uniform, inversely graded laminae with few .... deposits show a pronounced along-slope migra-.

Download PDF (835 KB) - The Artifex


As will be shown in another place, even the sand dune floras are ... again has a natural twofold division, one part treating of gross ... Nearly all of the dune societies are characterized by a high__ .... sand is also slight, nor is there such pronounced capillarity as is .... and carried down the steep leeward slope by gravitation. I...