Yearly changes in the seasonal frequency and duration of short-term acid pulses in some Nova Scotia, Canada streams |
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| Authors: | T A Clair A Ghosh Bobba Krista Miller |
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| Institution: | (1) Environmental Conservation Branch, Environment Canada – Atlantic Region, P.O. Box 6227, Sackville, New Brunswick, E4L IG6, Canada e-mail: tom.clair@ec.gc.ca Tel.: +1 506 3645070 Fax: +1 506 3645062, CA;(2) National Water Research Institute, Environment Canada, P.O. Box 5050, Burlington, Ontario, L7R 4A6, Canada, CA |
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| Abstract: | The seasonal frequency and duration of low pH events at three sites located in southwestern Nova Scotia were analyzed using
measured and synthetic daily pH data. The basins varied in size from 0.3 to 300 km2 and were subject to frequent snowmelt events in winter and spring, as well as occasional runoff events during summer and
fall. Results showed that, in order to fill in missing data from periods where collection was interrupted, statistical approximations
using discharge were not totally acceptable, as generated data consistently missed the extreme values measured. Despite a
lack of totally accurate event pH estimates for periods where daily data were missing, analysis showed that in this region,
low pH episodes can occur year-round including summer. The highest probabilities of low pH episodes nevertheless occurred
in the winter and spring when snowmelts were frequent.
Received: 12 November 1999 · Accepted: 18 July 2000 |
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| Keywords: | Acid episodes Hydrology pH |
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