Aerosol deposition off the South African West Coast by Berg winds
Aerosol ; Atmospheric dynamics ; Coastal environment ; South Africa ; Wind
Berg winds off the west coast of southern Africa are associated with wintertime subcontinental and ridging anticyclone. Although not frequent, Berg winds are considered the most important atmospheric agents of aerosol transport and deposition off
This study was conducted in a wind tunnel rainfall simulator facility at Ghent University, Belgium. The AA present experimental results directly obtained on the effect of horizontal wind velocity on sand detachment from splash cups
, with the objective of providing a better insight into the detachment process under wind-driven raindrops.
In this paper, soil erodibility in water and wind erosion research is discussed on analyzing the concept and mechanism of soil erodibility, methods to measure and calculate soil erodibility. At the same time, the defect and researching orientations
of soil erodibility in water and wind erosion are also discussed.
Aeolian features ; Aeolian transport ; Arid area ; Burkina ; Sahel ; Shear stress ; Wind erosion ; Wind speed
The effect of several wind characteritics on sand transport was studied in 3 experiments in north Burkina Faso. The aim is to provide more insight into the relationship between turbulent air flow and related saltation transport. In addition
Nutrient losses by wind and water, measurements and modelling
Africa ; Biogeochemistry ; Burkina ; Model ; Nutrient ; Sahel ; Sediment budget ; Soil erosion ; Water erosion ; Watershed ; Wind erosion
Two physically based models (WEPS and EUROSEM, both written in PCRaster) were extended with nutrient modules to investigate the role of wind and water erosion in the loss and gain of nutrients at the scale of a Sahelian field. The models are applied
at 3 geomorphic units in the Katchari catchment in northern Burkina Faso. WEPS can predict spatial patterns of erosion and deposition due to wind-blown particle transport.
Frequency and magnitude biases in the Fryberger model, with implications for characterizing geomorphically effective winds
Aeolian features ; Aeolian transport ; Canada ; Dune ; Maritime Province ; Model ; Prince Edward Island ; Statistical bias ; Wind speed
The Fryberger model uses standardized wind data to estimate regional aeolian sediment drift potential (DP), which allows for interpretation and classification of aeolian dune landscapes. This paper identifies systematic frequency and magnitude
biases in the model that result from : variations in wind direction sector range, and use of wind speed class mid-point values over more statistically representative values. The significance of these biases is tested using unclassified data from Stanhope
The effect of wind gusts, moisture content and fetch length on sand transport on a beach
Aeolian features ; Coastal environment ; Denmark ; Jylland ; Sediment transport ; Soil moisture ; Wind speed
This paper reports on an analysis of instantaneous sediment transport in relation to wind gusts, moisture content and fetch length from a field study carried out at Skallingen, Denmark. Wind speeds were measured with cup anemometers
and dune sediment budgets : wind speed, surface moisture conditions.
The erodibility is an important component of soil erosion models. Three soil surfaces were modified using rainfall simulation and wind tunnel abrasion experiments. Observations of those changes were made and recorded using digital images
Correlation of wind records and proxy wind history from tree rings at Port Angeles, Washington with sodium concentration at Summit, Greenland, and linkages with Gulf of Alaska sea level pressure forcing
Alaska ; Conifer ; Correlation ; Dendroclimatology ; Dendrology ; Greenland ; Interannual variability ; Local wind ; North America ; North Pacific Ocean ; Sea level ; Washington ; Wind
Energy ; Germany ; Location ; Niedersachsen ; Regional development ; Regional planning ; Saxony-Anhalt ; Spatial allocation ; Wind energy
The article explains the growth potential of the wind energie sector in two German regions, which are already well equiped with wind energy installations. Analysing the allocation practice of regional and structural planning institutions, the study
Arid area ; China ; Duricrust ; Dust storm ; Lithology ; Northern China ; Sand ; Surface deposits ; Wind
farmland, grassland, sandland, gobi and salt crust. These data comprise sand-dust storm days and strong wind days. The AA. find that there are certain correlations between the days of sand-dust storm and strong wind for different underlying surfaces, which
Aeolian dust ; Aeolian features ; Belgium ; Experimentation ; Grain size distribution ; Pebbles ; Spatial distribution ; Wind speed
This study investigates how the deposition of dust is affected when rock fragments become gradually more embedded in the ground or, inversely, become more concentrated on the surface. Experiments were executed in an aeolian dust wind tunnel with 8
Model ; Monsoon ; Numerical model ; Ocean circulation ; Pacific Region ; Seasonal variation ; Tide ; Wind
significantly to the whole LRC in the Bohai Sea. Unlike the identical structure of the tide-induced LRC, the wind diven LRC varies seasonally under the prevailing monsoon.