Results 191 to 200 of about 233,985 (228)
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An evaluation of the efficiency of some eolian dust collectors
Soil Technology, 1994Abstract Accurate dust collectors are important in evaluating soil movement by wind. The relative efficiency of four types of eolian dust collectors was investigated by examining dust deposition efficiency in an eolian dust tunnel, and measuring long-term accumulation efficiency during a 24-month field experiment in a desert environment.
Goossens, D, Offer, Zvi Yehoshua
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The Chemistry of Eolian Quartz Dust and the Origin of Chert
Journal of Sedimentary Research, 2018Abstract Among the numerous models that have been suggested for the primary and predominant source of silica for chert, we suggest that eolian dust is worthy of further considerations. Such considerations are supported by the common association of Phanerozoic chert with evaporites, limestones, dolomites, or other strata that were ...
C. Blaine Cecil +2 more
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Characteristics of eolian dust over the eastern China Seas
Chinese Journal of Oceanology and Limnology, 1997Eolian dust is an important material source of marine sediment and heavy metals influencing marine environment and primary productivity. Although the eastern China Seas and their adjacent regions are downwind of East Asian dust sources and have potentially high atmospheric input, study on the eolian dus in these regions is limited.
Li An-chun, Chen Li-rong
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Eolian dust along the eastern margins of the Atlantic Ocean
Marine Geology, 1972Eolian dust has been collected from the marine atmosphere of the major wind systems along the eastern margins of the Atlantic Ocean between c. 27°N and c. 34°S. The dust-loadings decreased in the order; northeast trades (average 57 μg m−3 of air) > variable winds of the Intertropical Convergence Zone (average, 0.23 μg m−3 of air) > southeast trades (
R Chester +4 more
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Biogeochemistry of iron in Australian dust: From eolian uplift to marine uptake [PDF]
Dust is an important vector for iron supply to the ocean, which subsequently impacts ocean productivity, atmospheric CO2 concentrations, and hence global climate. Here, we synthesize the processes influencing the biogeochemistry of Australian dust and compare them with those from other Southern Hemisphere dust sources.
P W Boyd, Toby K Westberry
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Eolian Dust Affects Phytoplankton in the Waters off Kuwait, the Arabian Gulf
Naturwissenschaften, 1999Summer phytoplankton assemblages from surface waters off Kuwait were enriched with levels of eolian dust (10(5), 10(6), and 10(7) mg/m(3)), similar to seasonal dust fallout for this region. Algal growth was positive and dose dependent. Highest biomass was up to 527 &mgr;g chlorophyll a/l on day 5.
, Subba Rao DV +2 more
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Composition of eolian dust in southern Turkmenia, as in dust storm of January, 1968
International Geology Review, 1971Granulometrically, the dust collected at Ashkhabad is much finer than the dust laid down by the storms at Jerusalem and elsewhere in the Middle East and is relatively high in calcium, magnesium, carbonate, and sesquioxides of iron. Its origin is believed to be local, Turkmenian-Iranian. -- V.P. Sokoloff.
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Eolian Dust over the Mediterranean and Their Contribution to the Present Sedimentation
1989Atmospheric dust has been sampled over the Mediterranean by mesh panels and by filtration during a three years research program. The concentration and the composition of the dust was investigated and have been shown to depend on the origin and mode of transport.
L. Tomadin, R. Lenaz
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Effect of rock fragments on eolian deposition of atmospheric dust
CATENA, 1994Abstract The effect of rock fragments and rock fragment cover on the deposition of airborne dust was examined in a wind tunnel. Four parameters were studied: pebble size, pebble flattening, cover density and wind speed. The effect of these parameters on the deposition of dust on the pebbles, on the deposition of dust bewween and underneath the ...
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Eolian dust in the coastal area north of Jeddah, Saudi Arabia
Journal of Arid Environments, 1985The nature and composition of the eolian dust falling in the coastal area north of Jeddah, on the west coast of Saudi Arabia, were investigated over a period of six months (December 1981–May 1982). Considerable variation exists in the average daily fall-out of the dust, from a minimum of 0·023 g/m 2 /day in February to a maximum of 0·061 g/m 2 /day in ...
A.K.A. Behairy +2 more
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