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タイトルヨミ
シマントガワ ノ エンスイ ソジョウ
日本語以外のタイトル
Salt water intrusion into the Shimanto River
ファイル
言語
日本語
著者
井内 美郎
井上 卓彦
中原 知明
徳岡 隆夫
吹田 歩
内容記述(抄録等)
Salt water intrusion into the Shimanto River was measured on June 16 and 17, and December 12 and 13, 2004 at spring tide, using a SC-3 acoustic profiling system which determines the spatial distribution of the halocline with the measurements of water quality (temperature, salinity and chlorophyle a). This system is an improved 200 kHz precision echosounder, that records the distribution of the halocline and the thickness of the salt-water layer as profile records. At the Shimanto River saline intrusion has been known to reach up to 9.8 km from the river mouth, and is known to reach in less than 8 km in the present days owing to the deposition of sandy sediments along the downstream area. Our observation has clarified that the saline wedge usually remains at the deep of 5.6 km, and that it exceeds sometimes upstream up to 7.5 km during flood tide. The behavior of the salt wedge at the moderately mixed rivers are clearly visualized by the present study.
主題
Shimanto River
salt intrusion
saline wedge
echo-sounding survey
掲載誌名
Laguna : 汽水域研究
13
開始ページ
63
終了ページ
77
ISSN
21852995
発行日
2006-06
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・学術情報本部 エスチュアリー研究センター
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