Response of Alewives to High-Frequency Sound at a Power Plant Intake on Lake Ontario

Quentin E. Ross New York Power Authority, 123 Main Street, White Plains, New York, 10601, USA

Dennis J. Dunning New York Power Authority, 123 Main Street, White Plains, New York, 10601, USA

Richard Thorne BioSonics, Inc., 3670 Stone Way North, Seattle, Washington, 98103, USA

John K. Menezes Sonalysts, Inc., 215 Parkway North, Waterford, Connecticut, 06385, USA

Gary W. Tiller Sonalysts, Inc., 215 Parkway North, Waterford, Connecticut, 06385, USA

John K. Watson Sonalysts, Inc., 215 Parkway North, Waterford, Connecticut, 06385, USA

Abstract

From April through June 1991, we tested a full-scale deterrent system for excluding alewives Alosa pseudoharengus from the intake of the James A. FitzPatrick Nuclear Power Plant (JAF), near Oswego, New York. This electronic system produced high-frequency broadband sound (122–128 kHz) at a source level (in decibels [dB] in reference to 1 μPa) of 190 dB. When the system was on, the density of fish near the JAF intake decreased by as much as 96% and the number of alewives impinged on the intake screens at JAF decreased by as much as 87%. The system was effective during both day and night, and its range was greater than 80 m.

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Response of Alewives to High-Frequency Sound at a Power Plant Intake on Lake Ontario

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Response of Alewives to High-Frequency Sound at a Power Plant Intake on Lake Ontario

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