東部深層海水創新研發中心

Enhancing fish stocks with wave-powered artificial upwelling

發佈日期:2016-09-22

標題
Enhancing fish stocks with wave-powered artificial upwelling
作者
Brian Kirke
文件屬性
國外期刊
知識分類
能源利用
出版年
2003
刊名
Ocean & Coastal Management
點閱數
2666

摘要

Ocean fisheries are declining worldwide due to overexploitation. Productivity could be enhanced and the problem alleviated by pumping nutrient-rich deep ocean water (DOW) to the surface to feed phytoplankton, the bottom end of a marine food chain, mimicking natural upwelling which sustains the most productive ocean fishing grounds in the world. Various pump types and power sources have been proposed for this purpose. The present article proposes a simple wave-powered pump to demonstrate the concept cost-effectively at prototype scale. Possible solutions to the problems of dilution and plunging of dense, nutrient-rich DOW are discussed. Two further possible benefits of this proposal are discussed: by extracting wave energy, relatively calm fishing grounds may be created close to markets, and by pumping up very large quantities of cold DOW, the surface temperature could be lowered enough to reduce coral bleaching on parts of the Great Barrier Reef.

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