Big Moose Basin: simulation of response to acidic deposition |
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Authors: | George F Davis John J Whipple Steven A Gherini Carl W Chen Robert A Goldstein Arland H Johannes Peter WH Chan Ronald K Munson |
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Institution: | (1) Tetra Tech, Incorporated, 3746, Mt. Diablo Boulevard, Lafayette, California, USA;(2) Systech, Incorporated, 3744, Mt. Diablo Boulevard, Lafayette, California, USA;(3) Electric Power Research Institute, 3412, Hillview Avenue, Palo Alto, California, USA |
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Abstract: | The ILWAS model has been enhanced for application to multiple-lake hydrologic basins. This version of the model has been applied to the Big Moose basin, which includes Big Moose Lake and its tributary streams, lakes, and watersheds. The basin, as defined, includes an area of 96 km2, with over 20 lakes and ponds, and 70 km of streams. Hydrologic and chemical calibrations have been made using data from seven sampling stations. When total atmospheric sulfur loading to the basin is halved, the model predicts, after four years of simulation, a decreasing sulfate concentration and to a lesser extent a rising alkalinity at Big Moose Lake outlet. At the end of four years, the results show an increase in pH of 0.1 to 0.5 pH units depending upon season. |
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Keywords: | acidic deposition Adirondacks modeling surface water acidification water chemistry |
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