Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Empirical Models for Lake Acidification in the Upper Great Lakes Region.
Author Rogalla, J. A. ; Brezonik, P. L. ; Glass, G. E. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;Minnesota Univ., Minneapolis. Dept. of Civil and Mineral Engineering.
Publisher c1986
Year Published 1986
Report Number EPA/600/J-86/486;
Stock Number PB89-104426
Additional Subjects Acidification ; Great Lakes ; Water pollution ; Precipitation(Meteorology) ; Mathematical models ; Watersheds ; Estimates ; Alkalinity ; Sulfur dioxide ; Sulfuric acid ; Ions ; Land use ; Graphs(Charts) ; Michigan ; Minnesota ; Wisconsin ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB89-104426 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/14/1989
Collation 9p
A large data base on inland lakes in the Upper Great Lakes Region (UGLR) was used to evaluate assumptions and relationships of empirical acidification models. Improved methods to calculate background alkalinity and background SO4(2-) are reported; SO4(2-) enrichment factors indicate that terrestrial SO4(2-) sources and watershed or lake sinks must be considered for site-specific background SO4(2-) estimates. Significant relationships were found between lake acidification estimated as change in SO4(2-) and precipitation acidity but not between changes in lake alkalinity and precipitation acidity in the lightly impacted region. (Copyright (c) 1986 by D. Reidel Publishing Company.)