Empirical models for lake acidification in the Upper Great Lakes Region

Technical Report · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6660356

Rogalla, J A; Brezonik, P L; Glass, G E

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 SO/sub 4//sup 2 -/ are reported; SO/sub 4//sup 2 -/ enrichment factors indicate that terrestrial SO/sub 4//sup 2 -/ sources and watershed or lake sinks must be considered for site-specific background SO/sub 4//sup 2 -/ estimates. Significant relationships were found between lake acidification estimated as change in SO/sub 4//sup 2 -/ and precipitation acidity but not between changes in lake alkalinity and precipitation acidity in the lightly impacted region.

• Research Organization: Environmental Protection Agency, Duluth, MN (USA). Environmental Research Lab.
• OSTI ID: 6660356
• Report Number(s): PB-89-104426/XAB; EPA-600/J-86/486
• Country of Publication: United States
• Language: English

Related Subjects

510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID NEUTRALIZING CAPACITY
ACID RAIN
ACIDIFICATION
ATMOSPHERIC PRECIPITATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMISTRY
FEDERAL REGION V
GREAT LAKES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IONS
LAKES
LAND USE
MATHEMATICAL MODELS
MICHIGAN
MINNESOTA
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTION
RAIN
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFURIC ACID
SURFACE WATERS
USA
WATER CHEMISTRY
WATER POLLUTION
WATERSHEDS
WISCONSIN