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Observations of Artificial Destratification

by S. Geoffrey Schladow, Univ of Western Australia, Nedlands,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Artificial destratification using bubble plumes is one means whereby low dissolved oxygen in the hypolimnion of lakes and reservoirs may be averted. Temperature and DO were measured at Lake Nepean, Australia, prior to and during artificial destratification. The results showed that it had an immediate effect on lake motions across a range of scales. Destratification occurred by the erosion of the base of the surface layer. Hypolimnetic temperatures were above historical values, heat storage in the lake increased, and the time of turnover was brought forward two and a half months.

Subject Headings: Lakes | Temperature measurement | Dissolved oxygen | Water storage | Plumes | Thermal properties | Reservoirs | Australia

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