| Main Title |
Episodic Acidification of Freshwater Systems in Canada: Physical and Geochemical Processes. |
| Author |
Tranter, M. ;
Davies, T. D. ;
Wigington, P. J. ;
Eshleman., K. N. ;
|
| CORP Author |
University of East Anglia, Norwich (England). School of Environmental Sciences. ;Bristol Univ. (England). Dept. of Geography. ;Virginia Univ., Charlottesville. Dept. of Environmental Sciences.;Corvallis Environmental Research Lab., OR. |
| Publisher |
c19 Jan 93 |
| Year Published |
1993 |
| Report Number |
EPA/600/J-94/222; |
| Stock Number |
PB94-169976 |
| Additional Subjects |
Canada ;
Fresh water ;
Acidification ;
Water chemistry ;
Alkalinity ;
Acid neutralizing capacity ;
pH ;
Aquatic ecosystems ;
Surface waters ;
Ice ;
Acid rain ;
Snowmelt ;
Rainfall ;
Air water interactions ;
Hydrologic cycle ;
Watersheds ;
Reprints ;
Episodic acidification ;
Acidic deposition ;
Physical processes
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB94-169976 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
23p |
| Abstract |
The occurrence of episodic acidification in Canadian streams, lake waters and shallow groundwaters has been reviewed, and the controlling mechanisms identified. 'Episodes', which are periods of depressed alkalinity during hydrological events, have been studied mainly in southeastern Canada, and occur at all sites where there is sufficient time resolution of the observations, viz. Ontario, Quebec and Nova Scotia. An 'alkaline episode', where acidity decreases during an event, has been reported from one lake in the Canadian Arctic. There is a bias towards the examination of episodes stimulated by snowmelt or rain-on-snow, since rainfall-stimulated episodes are poorly documented. Pre-event, rather than event, water dominates runoff during episodes. For this reason, biogeochemical reactions and the hydrological flowpaths in operation through the vadose and saturated zones are the principal controls on the chemical characteristics of episodes. (Copyright (c) 1994 Kluwer Academic Publishers.) |
| Supplementary Notes |
Pub. in Water, Air, and Soil Pollution, v72 p19-39 1994. Prepared in cooperation with Bristol Univ. (England). Dept. of Geography. and Virginia Univ., Charlottesville. Dept. of Environmental Sciences. Sponsored by Corvallis Environmental Research Lab., OR. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Episodic Acidification of Freshwater Systems in Canada: Physical and Geochemical Processes. |
| Category Codes |
68D; 48G; 99F |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
416825145 |
| Origin |
NTIS |
| Type |
CAT |
