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  • Aeolian deposition of dust over hills : the effect of dust grain size on the deposition pattern
  • Aeolian dust ; Aeolian features ; Aeolian transport ; Belgium ; Experimentation ; Flemish Brabant ; Grain size distribution ; Impact ; Leuven ; Topography
  • Wind tunnel experiments were conducted to investigate the effects of topography on the grain size characteristics of aeolian dust deposits. Experiments were performed on 3 isolated hills having various size and aspect ratios. The longitudinal
  • profile of the median grain diameter was investigated for each hill. The wind tunnel experiments show that the grain size characteristics of aeolian dust deposits are affected by topography.
  • The aeolian dust accumulation curve
  • Aeolian deposit ; Aeolian dust ; Aeolian features ; Belgium ; Concept ; Experimentation ; Flanders ; Leuven ; Model ; Wind erosion ; Wind speed
  • This article presents a simple physical concept of aeolian dust accumulation, based on the behaviour of the subprocesses of dust deposition and dust erosion. A model is tested in a series of wind tunnel experiments. Some implications of the model
  • Aeolian deposits on a scottish mountain summit : characteristics, provenance, history and significance
  • Aeolian features ; C 14 dating ; Grain size distribution ; Holocene ; Palynology ; Sand ; Scotland ; Sedimentology ; Surface deposits ; United Kingdom
  • and pollen analysis of buried and intercalated organic horizons, and 3) on determining the origin and provenance of these deposits. The wider significance of this site for understanding the evolution of high-level aeolian deposits is then assessed.
  • This research focuses 1) on establishing the distribution, thickness and sedimentological characteristics of the windblown sediments on the summit of The Storr, 2) on reconstructing the history of aeolian accumulation through radiocarbon dating
  • Effect of rock fragment embedding on the aeolian deposition of dust on stone-covered surfaces
  • 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
  • different types of pebbles. Aerodynamic flow separation and diverging and converging airflow play an important role in the process of dust deposition on stone-covered surfaces.
  • Wind tunnel experiments and field measurements of aeolian dust deposition on conical hills
  • Aeolian features ; Aeolian transport ; Arid area ; Desert ; Experimentation ; Hill ; Israel ; Negev ; Topography
  • The spatial pattern of short-term aeolian dust deposition on and around cone-shaped hills is investigated via the simulation, in a wind tunnel, of dust storms over a topographic scale model of a conical hill in the Negev desert, Israel. The results
  • Textural features of fluvial and aeolian deposits in the Mark River valley (Belgium)
  • The valley of the river Mark (Belgium) is filled with deposits of fluvial and aeolian origin accumulated during the Pleniglacial or the beginning of the Late Glacial, not later than 12.000 yr BP. The aim of the investigations was to determine those
  • textural features of the deposits that would best differentiate them into fluvial and aeolian ones. The analyses of granulometric composition, of the quartz grain abrasion, and of heavy mineral composition were performed as well as the analysis of quartz
  • Aeolian deposition and its effect on soil and vegetation changes on stabilised desert dunes in northern China
  • Aeolian deflation ; Aeolian features ; Arid area ; China ; Desert ; Dune ; Duricrust ; Soil ; Soil properties ; Spatial variation ; Vegetation
  • Spatial and temporal patterns of aeolian deposition at Shapotou, northern China, were studied on a chronosequence (0,12,29 and 37 years) of stabilised desert dunes. Aeolian deposition markedly influenced soil and vegetation changes on the dunes
  • . Mean deposition from August 1993 to July 1994 showed a complex spatial pattern, determined by prevailing wind direction, topography and shrub distribution. The implications of projected increases in the dustiness of arid regions on the stability
  • Techniques to measure the dry aeolian deposition of dust in arid and semi-arid landscapes : a comparative study in West Niger
  • Aeolian dust ; Aeolian features ; Arid area ; Comparative study ; Ground survey ; Monsoon ; Niger ; Research technique ; Semi-arid area
  • Seven techniques designed to measure the dry aeolian deposition of dust on a desert surface were tested during field experiments in Niger. The results show that the crude (unconverted) deposition fluxes of the 5 experimental techniques were similar
  • , while the crude deposition fluxes calculated by the 2 theoretical techniques were substantially higher. The measurements illustrate the need to include a grain shape factor in theoretical dust deposition models. The paper also discusses the advantages
  • Effect of rock fragment eccentricity on eolian deposition of atmospheric dust
  • Aeolian dust ; Aeolian features ; Belgium ; Experimentation ; Geomorphometry ; Loess ; Wind speed
  • The aim of this study is to investigate the physical effects of rock fragment eccentricity on the dust deposition mechanism. This was examined in a wind tunnel. All data in this study refer to intial dust deposition (not accumulation), since only
  • Deposition rate of Saharan dust in the Aegean Sea
  • Aeolian dust ; Aeolian features ; Aeolian transport ; Atmospheric circulation ; Atmospheric dynamics ; Crete ; Greece ; Marine sediment ; Mediterranean Sea ; Sahara
  • Contemporary and post-glacial rates of aeolian deposition in the coast mountains of British Columbia, Canada
  • Aeolian features ; British Columbia ; Canada ; Ecotone ; Mountain ; Palaeo-environment ; Tree line ; Watershed
  • This paper presents data on both contemporary and post-glacial rates of aeolian deposition in 3 small catchments that straddle the alpine-subalpine ecotone in the Pacific Ranges of the Coast Mountains. From process measurement over a single year
  • , the mean annual regional (allochtonous) rate of aeolian deposition for the catchments is estimated. The average rate of annual deposition over the post-glacial period is calculated from the soil profiles. Many of the soils are cumulic in nature and protect
  • Aeolian dust ; Aeolian features ; Aeolian transport ; Alluvial cone ; Arid area ; Experimentation ; Fluvial processes ; Infiltration ; Pedogenesis ; Slope dynamics ; Soil moisture
  • Modern research is showing clearly that there are many interactions between fluvial and aeolian processes in drylands. Aeolian accumulation patterns in time and space are strongly controlled by sediment supply from fluvial sources. Aeolian dust
  • deposition has significant impacts on slope processes, soil development and runoff-infiltration relations, which in turn affect sediment supply to fluvial systems.
  • Aeolian dust contributions to soil on the Namoi Valley, northern NSW, Australia
  • Aeolian dust ; Aeolian features ; Alluvium ; Australia ; Geochemistry ; Grain size distribution ; Mineralogy ; New South Wales ; Pedogenesis ; Soil
  • The presence of aeolian dust in soil profiles can easily be obscured by pedoturbation , especially in clay soils with vertic properties, such as those of northern New South Wales. To indicate aeolian dust components within soil profiles typical
  • of the lower Namoi River Valley, the AA. used a range of granulometric, mineralogical and geochemical methods. The AA. also examined contemporary data on dust deposition rates and compared characteristics of present-day dust with the soil materials.
  • Wind tunnel experiments of aeolian dust deposition along ranges of hills
  • Aeolian features ; Belgium ; Experimentation ; Hill ; Loess ; Slope gradient ; Topography ; Wind ; Wind erosion
  • The aim of this paper is to study dust deposition patterns over various topographic configurations. Dust patterns are analysed for different combinations of hill size and hill spacing, and comparisons are made with the reference profiles over
  • in dust deposition and accumulation, the effects should be recognizable in the profiles.
  • Sedimentology and facies distribution of Pleistocene cold-climate aeolian and fluvial deposits in the Roer Valley Graben (southeastern Netherlands)
  • Aeolian features ; Graben ; Grain size distribution ; Lithostratigraphy ; Loess ; Netherlands (The) ; Palaeo-environment ; Periglacial features ; Pleistocene ; Quaternary ; Sand ; Sedimentary structure ; Subsidence
  • This paper describes and interprets the sedimentary facies that can be recognized in the fine-grained deposits of the Boxtel Formation in the Roer Valley Graben and explains the vertical and lateral facies distribution. It is demonstrated
  • that the facies characteristics and architecture are related to a combination of local subsidence and the generally cold-climate conditions during and after deposition.
  • Harmattan dust deposition and particle size in Ghana
  • Aeolian dust ; Aeolian features ; Agropedology ; Arid area ; Ghana ; Grain size distribution ; Loess ; Research technique ; Sampling ; Sediment transport
  • This paper describes the development of sampling techniques for monitoring the Harmattan dust deposition in Ghana. It compares 3 different methods to trap the Harmattan dust and describes the difference in amount and particle size distribution
  • Volcaniclastic aeolian deposits at Sunset Crater, Arizona : terrestrial analogs for Martian dune forms
  • Aeolian features ; Aeolian transport ; Arizona ; Comparative study ; Crater ; Dune ; Mars planet ; Pyroclastic ; Saltation ; Spatial distribution ; United States of America ; Volcanism
  • Sunset Crater in north-central Arizona (USA) is a 900-year-old scoria-cone volcano. Wind action has redistributed its widespread tephra deposit into a variety of aeolian dune forms that serve as a terrestrial analog for similar landforms and aeolian
  • Aeolian modification of moraine soils, Whiskey Basin, Wyoming, USA
  • Aeolian features ; Catena ; Geochemistry ; Moraine ; Pedogenesis ; Piedmont ; Rocky Mountains ; Soil ; Soil properties ; United States of America ; Wyoming
  • Soils along catenas of Pinedale and Bull Lake at Whiskey Basin, in the Wind River Range, were sampled to assess the effects of aeolian processes on soil development. Aeolian processes appear to have influenced soils by both depositing sediments
  • and eroding topsoils. Pedogenic silt (often used as an indicator of wind deposition) accumulated in the Bluff Lake soils moderately correlate with pedogenic clay accummulated, suggesting that fine sediments may have been deposited and incorporated into soil
  • formation here. The AA. suggest that aeolian modification of soils also can be demonstrated on moraines at Whiskey Basin.
  • A progression of induration in Medusae Fossae Formation transverse aeolian ridges : evidence for ancient aeolian bedforms and extensive reworking
  • Aeolian features ; Diagenesis ; Dune ; Erosion ; Geomorphology ; Induration ; Mars planet
  • A progression of induration, erosion, and redeposition of transverse and networked transverse aeolian ridges (TARs) has been documented in the Medusae Fossae Formation (MFF), Mars. Cratered and eroded aeolian bedforms are rarely observed on Mars
  • , indicating that those found in the MFF have been inactive for much longer than those found elsewhere. Indurated TARs are observed to grade into faceted MFF terrain, indicating a genetic relationship between the two. The AA. propose that TAR deposition
  • , induration and erosion have played a larger role in the surface morphology and evolution of the MFF than previously recognized. The deposition, induration, and erosion of TARs indicate that the MFF has undergone multiple cycles of reworking, and that much
  • Dust transportation and deposition in a superhumid environment, West Coast, South Island, New Zealand
  • Aeolian dust ; Aeolian features ; Aeolian transport ; Atmospheric circulation ; Coastal environment ; Foehn ; Loess ; New Zealand ; South Island ; Weather type
  • The AA. report contemporary dust transportation and deposition based on a 10-month study of aeolian processes along a 300-km3 1section of the superhumid West Coast, South Island, New Zealand.3 1Measured rates of dust deposition and associated
  • meteorological3 1observations shed new light on aeolian processes in mid-latitude3 1West Coast settings and clarify the formation of the Pleistocene3 1loess mantles that blanket much of the West Coast. These are believed to have formed under synoptic circulation