Record Display for the EPA National Library Catalog

RECORD NUMBER: 16 OF 24

OLS Field Name OLS Field Data
Main Title Stable Sulfur Isotopes of Sulfate in Precipitation and Stream Solutions in a Northern Hardwood Watershed.
Author Stam, A. C. ; Mitchell, M. J. ; Krouse, H. R. ; Kahl, J. S. ;
CORP Author State Univ. of New York Coll. of Environmental Science and Forestry, Syracuse. ;Calgary Univ. (Alberta). ;Maine Univ. at Orono.;Corvallis Environmental Research Lab., OR.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/457;
Stock Number PB93-141562
Additional Subjects Sulfur isotopes ; Stable isotopes ; Precipitation(Meteorology) ; Hardwoods ; Watersheds ; Forest land ; Sulfates ; Hydrogeology ; Hydrogeochemistry ; Geochemical cycles ; Acidification ; Rainfall ; Acidity ; Snowmelt ; Runoff ; Air pollution ; Maine ; Watershed Manipulation Project
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NTIS  PB93-141562 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/12/1993
Collation 9p
Abstract
Stable S isotopes of SO4(2-) in precipitation, throughfall, and stream water solutions in a northern hardwood watershed (Bear Brook Watershed, Maine) were examined to determine sources of stream SO4(2-) and to identify watershed processes that may affect atmospherically deposited SO4(2-) prior to reaching the streams. Similarity among temporal pattern in Delta(34)S of precipitation, throughfall, stream SO4(2-) (range: +3.4 to 9.4%), and (SO4(2-)(marine))/(SO4(2-)(total)) of stream SO4(2-) (5-10%) indicated that the Delta(34)S of stream SO4(2-) were controlled principally by atmospheric deposition. Lack of correlation between Delta(34)S of stream SO4(2-) and stream (SO4(2-)(total)), elevational position, and stream discharge supported the interpretation that fractionation of stable S isotopes within the watershed appeared to have, at most, a minor influence on Delta(34)S of stream SO4(2-). (Copyright (c) 1992, American Geophysical Union.)