Source apportionment of wet sulfate deposition in eastern North America
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چکیده
منابع مشابه
Perchlorate in wet deposition across North America.
Natural perchlorate is believed to be of atmospheric origin, yet no systematic study has been conducted to evaluate perchlorate deposition rate and possible seasonal or spatial variations. This study evaluated perchlorate concentrations in weekly composite wet deposition samples acquired through the National Atmospheric Deposition Program from 26 sites across the continental United States, Alas...
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Haddon (1996) proposes a theoretical model for earthquake source spectra in eastern North America (ENA), based on certain assumptions regarding the rupture process. He shows that if ENA earthquakes are characterized by very high rupture velocities and fractional stress drop, then their high-frequency S-wave radiation is strongly enhanced relative to that predicted by the simple Brune (1970) sou...
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Whereas many ecosystem characteristics and processes influence mercury accumulation in higher trophic-level organisms, the mercury flux from the atmosphere to a lake and its watershed is a likely factor in potential risk to biota. Atmospheric deposition clearly affects mercury accumulation in soils and lake sediments. Thus, knowledge of spatial patterns in atmospheric deposition may provide inf...
متن کاملComparative phylogeography of unglaciated eastern North America.
Regional phylogeographical studies involving co-distributed animal and plant species have been conducted for several areas, most notably for Europe and the Pacific Northwest of North America. Until recently, phylogeographical studies in unglaciated eastern North America have been largely limited to animals. As more studies emerge for diverse lineages (including plants), it seems timely to asses...
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Wet deposition and transport analysis has been performed for ammonium (NH` 4 ) in North Carolina, USA. Multiple regression analysis is employed to model the temporal trend and seasonality in monthly volume-weighted mean NH` 4 concentrations in precipitation from 1983 to 1996 at six National Atmospheric Deposition Program/National Trends Network (NADP/NTN) sites. A signi"cant (p(0.01) increasing...
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ژورنال
عنوان ژورنال: Atmospheric Environment (1967)
سال: 1985
ISSN: 0004-6981
DOI: 10.1016/0004-6981(85)90004-6