The chemical composition of aerosols settling in Israel following dust storms

Ganor, E.; Foner, H. A.; Brenner, S.; Ne’eman, E.; Lavi, N.

doi:10.1016/0960-1686(91)90196-e

Cited by 131 publications

(93 citation statements)

References 9 publications

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“…Minimum and average Ti/Al values of 0.05-0.09 are in good accordance with Ti/Al ratios of the upper continental crust and river suspended matter (Table 1) as well as with the Ti/Al ratio of Northern Saharan dust (0.09, Ganor et al, 1991). Therefore surface samples islands close to the NW African coast are characterised by lower ratios whereas the Ti/Al ratios of surface samples rest increase with increasing distance from the coast.…”

Section: Iron and Titaniumsupporting

confidence: 54%

Geochemical distribution patterns as indicators for productivity and terrigenous input off NW Africa

Plewa

Meggers

Kuhlmann

et al. 2012

Deep Sea Research Part I: Oceanographic Research Papers

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a b s t r a c tOne hundred and twenty-eight surface-sediment samples collected off North-West Africa were studied geochemically to detect the expressions of different meridional climate regimes and zonal productivity gradients in the surface sediments. This geochemical multi-tracer approach, coupled with additional information on the bulk carbonate and TOC contents makes it possible to characterise the sedimentological regime in detail. Typical terrigenous elements like Al, K and Fe mirror the importance of the humid (fluvial) influence in the north of the study area and the dominance of aeolian input in the south. Furthermore, the distributions of Ti and Fe in the surface sediments serve as tracers for the supply of eolian volcanic material from the Canary Islands. The spatial variability of the TOC contents in the surface sediments closely follows the ocean surface productivity patterns, whereas the CaCO 3 contents are mainly controlled by dilution with terrigenous matter. The potential productivity proxy Ba is not a reliable tracer for productivity in this region, since it is mainly supplied by terrigenous input (coupled with aluminosilicates).

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Section: Iron and Titaniumsupporting

confidence: 54%

Geochemical distribution patterns as indicators for productivity and terrigenous input off NW Africa

Plewa

Meggers

Kuhlmann

et al. 2012

Deep Sea Research Part I: Oceanographic Research Papers

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“…It is caused mainly by changes in air mass transport arriving from different sectors toward the sampling point (e.g. Dulac et al, 1987;Bergametti et al, 1989a,b;Guerzoni et al, 1990;Ganor et al, 1991;Hacisalihoǧlu et al, 1991Hacisalihoǧlu et al, , 1992Migon et al, 1993;Kubilay et al, 1994Kubilay et al, , 1995Luria et al, 1996;Mihalopoulos et al, 1997;Sandroni and Migon, 1997;Güllü et al, 2000;Danalatos and Glavas, 1999;Chabas and Lefèvre, 2000;Yatin et al, 2000;Erduran and Tuncel, 2001). …”

Section: Mass Size Distributionsmentioning

confidence: 99%

“…Dulac et al, 1987;Bergametti et al, 1989a, b;Dulac et al, 1989;Migon et al, 1991;Migon et al, 1993;Sandroni and Migon, 1997) or on the eastern coast including Turkey and Israel (e.g. Mamane et al, 1980;Ganor et al, 1991;Kubilay et al, 1994;Luria et al, 1996;Maenhaut et al, 1999;Güllü et al, 2000;Yatin et al, 2000;Erduran and Tuncel, 2001). However relatively few studies have been undertaken in the southern part of the eastern Mediterranean and Greece (e.g.…”

Section: Introductionmentioning

confidence: 99%

Size resolved mass concentration and elemental composition of atmospheric aerosols over the Eastern Mediterranean area

et al. 2003

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Abstract.A Berner low pressure impactor was used to collect size-segregated aerosol samples at Finokalia, located on the north-eastern coast of Crete, Greece during July 2000 and January 2001. Several samples were also collected during the summer campaign aboard the research vessel "AEGAIEO" in the Aegean Sea. Gravimetric analysis and inversion techniques yielded daily PM1 and PM10 mass concentrations. The samples were also analysed by PIXE giving the elemental size distributions of Al, Si, K, Ca, Ti, Mn, Fe, Sr, S, Cl, Ni, V, Cu, Cr, Zn, and Pb. The crustal elements and sea-salt had a unimodal supermicron size distribution. Sulphur was found predominantly in submicron fractions. K, V, and Ni exhibited a bimodal distribution with a submicron mode produced by forest fires and oil combustion. The anthropogenic elements had broad and not well-defined distributions. The time series for PM1 and PM10 mass and elemental concentrations showed both daily and seasonal variation. Higher mass concentrations were observed during two incursions of Saharan dust, whilst higher concentrations of S, Cu, Zn, and Pb were encountered in samples collected in air masses arriving from northern Greece or the western coast of Turkey. Elevated concentrations of chlorine were found in samples with air masses either originating above the Atlantic Ocean and arriving at Finokalia via western Europe or recirculating over the western coast of the Black Sea.

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“…The suggested proximal sources are Wadi El-Arish in northern Sinai [Yaalon, 1971[Yaalon, , 1987Yaalon and Ganor, 1973;Yaalon and Dan, 1974;Ganor et al, 1991], the Mediterranean shelf exposed during periods of low sea level [Gerson and Amit, 1987;Crouvi et al, 2008;Enzel et al, 2008] and sand dunes that advanced into the Sinai and Negev during the late Pleistocene [Crouvi et al, 2008].…”

Section: Loess In the Negev Desertmentioning

confidence: 99%

“…[8] Two main sources of dust have been suggested for the Negev loess ( Figure 1): (1) distal sources in the Sahara and Arabia deserts, which supply fine silt and clays that are transported by cyclonic winds (long-term suspension) over thousand of kilometers [Yaalon, 1971[Yaalon, , 1987Yaalon and Ganor, 1973;Yaalon and Dan, 1974;Ganor et al, 1991]; and (2) proximal sources, which supply fine sand and coarse silt, transported by short-term suspension and modified saltation, deposited by both dry and wet mechanisms. The suggested proximal sources are Wadi El-Arish in northern Sinai [Yaalon, 1971[Yaalon, , 1987Yaalon and Ganor, 1973;Yaalon and Dan, 1974;Ganor et al, 1991], the Mediterranean shelf exposed during periods of low sea level [Gerson and Amit, 1987;Crouvi et al, 2008;Enzel et al, 2008] and sand dunes that advanced into the Sinai and Negev during the late Pleistocene [Crouvi et al, 2008].…”

Section: Loess In the Negev Desertmentioning

confidence: 99%

Significance of primary hilltop loess in reconstructing dust chronology, accretion rates, and sources: An example from the Negev Desert, Israel

Crouvi¹,

Amit²,

Porat³

et al. 2009

J. Geophys. Res.

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[1] Although high-latitude loess sequences have been studied extensively for reconstructing past climates, loess in desert margins has been mostly overlooked. Moreover, many low-latitude loess studies have focused on secondary, reworked sequences for which paleoclimatic inferences are complicated owing to postdepositional processes acting under local control. In this respect, the spatial distribution of the loess and its different types are crucial. In this study, we differentiate primary and secondary loess using remote sensing and field criteria. We present remote sensing and geographic information system procedures for mapping loess distribution, in general, and for identifying pristine hilltop loess sequences in particular. Then, we present the mineralogical and textural analyses combined with optically stimulated luminescence ages of one such primary, hilltop loess sequence in the Negev desert that show that the late Pleistocene Negev loess started accumulating at $95 ka, much earlier than previously proposed ($70 ka). It was preceded by a previously unknown middle Pleistocene period of loess formation at $180-130 ka. The ages also suggest that the threshold of dust accretion rate needed for loess formation is $0.02 mm a À1 ($30 g m À2 a À1 ), a factor of 2 or more lower than previously thought (0.04 to 1.0 mm a À1 ). Our results also provide insights into causes of late Pleistocene loess accretion and its close association with regional dune field activity. The methodology for mapping the loess distribution may potentially be generalized to help understanding loess formation in other, more remote desert areas.

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The chemical composition of aerosols settling in Israel following dust storms

Cited by 131 publications

References 9 publications

Geochemical distribution patterns as indicators for productivity and terrigenous input off NW Africa

Geochemical distribution patterns as indicators for productivity and terrigenous input off NW Africa

Size resolved mass concentration and elemental composition of atmospheric aerosols over the Eastern Mediterranean area

Significance of primary hilltop loess in reconstructing dust chronology, accretion rates, and sources: An example from the Negev Desert, Israel

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