Physical Environments of Brackish Lakes and Tidal Rivers : Putting Emphasis on Internal Oscillations 

作成者 Okuda, Setsuo
日本十進分類法 (NDC) 517
内容 研究概要:In brackish lakes and tidal rivers where a stable stratification with a sharp halocline usually exists, a characteristic aquatic environment often appears. One of serious environmental problems is an appearance of anoxic water mass in the lower layer at these water regions especially in summer because of weak vertical mixing and active dissolved oxygen consumption. In such circumstances, internal oscillations frequently occur due to tide or/and wind and bring about an active movement of an anoxic water mass in the lower layer, and affects seriously the aquatic environment there. Then I studied physical processes of the internal oscillations in Lake Nakaumi and The River Ohashi and found that the oscillations with a few meter amplitude frequently occur and propagate as internal Kelvin waves in the lake and the oscillations sometimes cause anoxic water intrusions through the Ohashi River into Lake Shinji.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
掲載誌情報 Proceedings of the international symposium on hydro-environment in Asia page.17-24 (1997)
言語 英語

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