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In physical geography, a dune is a hill of sand built by wind or the flow of water. Dunes occur in ... The long axes of these dunes extend in the resultant direction of sand ... elongate parallel to...

HW CH 19 & 20 - Geology 111 with Jeffery at Marietta College ...


Nov 24, 2015 ... ______ refers to the "bouncing" mode of sand transport in a windstorm ... are long, high, sand dunes parallel with the prevailing wind direction.

Chapter 16 Study Guide - Scribd


A) A dune migrates in the direction of inclination of the slip face. ... by high atmospheric pressures and descending air masses (not rain shadow deserts). ... deserts are common in ______. sand dunes parallel with the prevailing wind direction. ... D) Staroid 28) ______ dunes are long. onshore winds in certain coastal areas.

Types of Dunes - USGS Publications Repository


Oct 29, 1997 ... Crescent-shaped mounds generally are wider than long. The slipface is on the dune's concave side. These dunes form under winds that blow from one direction , and they ... generally form sets of parallel ridges separated by miles of sand, ... three or more arms that radiate from the high center of the mound.

Dune and Other Desert Features - The shape of the land, Forces ...


Although dunes, wind-blown piles of sand, make up only 20 percent of the total ... winds from the sea and winds from the land meet and push the sand into long lines. These high, parallel dunes can be quite large: Scientists have recorded ... This dune is a ridge of sand that forms perpendicular to the direction of the wind.

Lake Michigan Coastal Dunes - Dunes - Linear Dunes


Linear dunes are long sand dunes formed parallel to the prevailing wind direction. Some linear dunes are tens of kilometers long. Formation: Linear dunes form ...

Sand Dunes - Miami Museum of Science


Each sand dunes' shape is determined according to how much sand and what kind of ... The long axes of the ridges are perpendicular to the wind direction. ... The smaller longitudinal dunes can be 3 to 4 meters high. The strength of the wind pushes the sand and forms long ridges that are parallel to the wind that pushes it.

10(ah) Eolian Processes and Landforms - Physical Geography


Wind can also cause erosion and deposition in environments where ... Sand dunes are the most noticeable landforms produced by wind erosion and ... Barchan, Crescent-shaped dune whose long axis is transverse to the dominant wind direction. ... asymmetrical dune that runs at right angles to the prevailing wind direction.

Sand Dunes | Coastal Care


Although no more than a pile of wind-blown sand, dunes take on a ... Over time dunes can grow, shrink, or move in the direction of prevailing winds. ... a ridge of sand forming with its axis, or crest, parallel to the shoreline. ... represent piles of sand where there is an exceptionally high amount of sand coming to the beach.

Formation and stability of transverse and longitudinal sand dunes


The shape of dunes depends on the history of wind regimes and sand availability . ... are either perpendicular or parallel to the mean wind direction, depending on the ... between straight and long longitudinal dunes and sinuous transverse dunes, ... High tide of the warm Pliocene: Implications of global sea level for Antarctic ...

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A Inselbergs and barcanoids B Pediments and playas C Bajadas ...


A) Diabolic B) Barchanoid C) Parabolic D) Staroid Answer: C Diff: 1 34) ______ dunes are long, high, sand dunes parallel with the prevailing wind direction.

Concept #5 Quiz - Pearson


a dune migrates in the direction of inclination of the slipface ... B. long ridges of sand that form about parallel to the prevailing wind and where sand supplies are  ...

Multiple choice


... dune dip to the west. During deposition of the sand, the prevailing winds were probably from the ______ . ... because volcanic dust is erupted high into the atmosphere because volcanic ... Ripples are generally oriented ______ to the current direction. parallel ... sand dunes arranged in long, parallel rows eroded bedrock ...