Saltation and wind-flow interaction in a variable slope wind tunnel
Aeolian features ; Aeolian transport ; Experimentation ; Grain size distribution ; Methodology ; Netherlands (The) ; Roughness ; Slope gradient ; Turbulence ; Wind speed
This paper describes how the characteristics of the boundary layer have been tested in a long horizontal wind tunnel. Then the AA. present data from a series of measurements in the SWT where they have studied flow characteristics over saltation
Aeolian features ; Aeolian transport ; Arid area ; Barchan ; California ; Dune ; Grain size distribution ; Sand ; Slope exposure ; United States of America ; Wind speed
Measurements of sediment flux on the windward slope of an isolated barchan using an array of 30 sand traps provide new data that can constrain models of dune dynamics. The data show that at low incident wind speeds, flux increases up the dune
exponentially, whereas at higher wind speeds the increase with distance approaches linearity. The wind profile measurements demonstrate that conventional wind profiles, derived from anemometry on dunes, do not measure the part of the boundary layer
Wind streaks: geological and botanical effects on surface albedo contrast
Aeolian features ; Albedo ; Alluvial nappe ; Arid area ; California ; Desert ; LANDSAT ; Leaching ; Plant cover ; Remote sensing ; United States of America ; Volcanic ash ; Wind ; Wind erosion
The objective of this study was to better understand wind streak formation and modification processes through field examination of two distinctly different wind streaks in the eastern Mojave desert. The Amboy and Sleeping Beauty wind streaks
The role of streamline curvature in sand dune dynamics: evidence from field and wind tunnel measurements
Aeolian features ; Aeolian transport ; Arid area ; Barchan ; Dune ; Experimentation ; Oman ; Slope exposure ; Slope gradient ; Turbulence ; Wind speed
Field measurements on an unvegetated, 10 m high barchan dune in Oman are compared with measurements over a 1:200 scale fixed model in a wind tunnel. This particularly concerns the determination of the pattern of shear stress on the windward slope
Aeolian features ; Climate fluctuation ; Coastal environment ; Denmark ; Dune ; Earth surface processes ; Geographical information system ; Jylland ; Model ; Numerical model ; Photointerpretation ; Plant cover ; Wind speed
This study describes the geomorphological changes of the Råbjerg Mile since 1887 A.D., examines changes in characteristics of the wind and vegetation cover with time and discusses controls on dune morphodynamics and dune evolution.
Aeolian features ; Aeolian transport ; Climate fluctuation ; Climatic variation ; Dune ; Global change ; Model ; Regional climate ; Sand ; Semi-arid area ; United States of America ; Washington ; Wind erosion ; Wind speed
variables of precipitation, temperature, and wind speed. Modelled data are integrated into eolian-climatic scenarios through maps of eolian susceptibility, plots of sand dune mobility, and calculated trends of unvegetated dune sand volumes. Results
Sand ramps are amalgamated accumulations of aeolian, fluvial, and talus deposits. They have developed as a result of the interaction of wind blown-sand and desert piedmont processes adjacent to mountain ranges in the Mojave Desert and occur next
budget of the dunefield and to discuss dunefield dynamics in relation to characteristics of the wind, sediment supply, sea level and human influence. The Vejers dunefield formed on a prograding shoreline supplied with large quantities of sediment from
Aeolian features ; Aeolian transport ; Arid area ; California ; Dune ; Experimentation ; Model ; New Mexico ; Sand ; Slope gradient ; Texas ; United States of America ; Wind speed
Aeolian features ; Aerosol ; California ; Data processing ; Dust storm ; LANDSAT ; Lake ; MSS ; Remote sensing ; Salt ; United States of America ; Wind erosion
Aeolian dust ; Aeolian features ; Aeolian transport ; Arid area ; Atmospheric pollution ; Ecosystem ; Environmental degradation ; Groundwater ; Human impact ; Lake ; Semi-arid area ; Water use ; Wind erosion
Aeolian features ; C 14 dating ; Colorado ; Dune ; Geochemistry ; Palaeo-environment ; Palaeosol ; Plant cover ; Quaternary ; Sand ; Stratigraphy ; Trace-element ; United States of America ; Wind