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タイトルヨミ
ナカウミ ナカウラ スイドウ ニオケル スイシツ ドウコウ
タイトル別表記
Water Qralitr Tendency in Nakaura Channel, the Outlet of Lake Nakaumi, Japan
ファイル
言語
日本語
著者
宇野 誠高
田中 秀典
大塚 泰介
髙安 克已
鮎川 和泰
内容記述(抄録等)
Salinity, dissolved oxygen and water temperature were continuously measured in the Nakaura channel, the outlet of the Lake Nakaumi, from April 1, 1999 to April 4, 2000. The measurements are carried out near the surface (1 m deep) and near the bottom (11 m deep). As a result, the salinity showed large daily and seasonal variation near the surface, whereas it was comparatively steady near the bottom. Fast Fourier transformation analysis detected its periodic fluctuation with the cycle of 12.52 hours near the surface, and 12.36-and 25.52 hours near the bottom, suggesting influence by tide. The salinity near the bottom also showed 14- and 28 days cycle, corresponding to the lunar tidal changes. Near the bottom, the temperature and the dissolved oxygen also showed periodic pattern corresponding to the tide. In contrast, they showed clear daily cycle near the surface.
主題
Nakaura channel
continuously observation of water quality
daily and seasonal variation of water quality
tidal changes
Fast Fourier transformation analysis
掲載誌名
Laguna : 汽水域研究
8
開始ページ
15
終了ページ
22
ISSN
21852995
発行日
2001-03
NCID
AN10439529
出版者
島根大学汽水域研究センター
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
研究・学術情報機構 エスチュアリー研究センター