Acidification in Three Lake District Tarns: Historical Iong term trends and modelled future behaviour under changing sulphate and nitrate deposition
| Autor: | P. G. Whitchead, J. Barlow, J. K. Adamson, E. Y. Haworth |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Hydrology
Nitrogen deposition lcsh:GE1-350 lcsh:T Alkalinity lcsh:Geography. Anthropology. Recreation Atmospheric pollution Lake district lcsh:Technology Model validity lcsh:TD1-1066 lcsh:G Nitrate deposition lcsh:Environmental technology. Sanitary engineering Groundwater lcsh:Environmental sciences |
| Zdroj: | Hydrology and Earth System Sciences, Vol 1, Iss 1, Pp 197-204 (1997) |
| ISSN: | 1607-7938 |
| Popis: | Three upland Lake District Tarns, Scoat, Greendale and Burnmoor, have been evaluated using MAGIC (Model of Acidification of Groundwater In Catchments) to reconstruct past, present and future chemical behaviour. The modelled historical changes in acidity are compared with palaeoecological estimation of pH to demonstrate model validity. Chemistry as simulated for all anions and cations and two of the three lakes are shown to have undergone significant acidification. The effects of changing atmospheric pollution levels on lake chemistry is evaluated and 80-90% sulphur reduction levels are required to achieve zero alkalinity. The impacts of increased nitrogen deposition are assessed and are shown to further delay reversibility. |
| Databáze: | OpenAIRE |
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