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言語
日本語
タイトルヨミ
ナカウミ シュンセツ アトチ ニ シュウセキ シタ フデイ ノ トクセイ
タイトル別表記
CHARACTERISTICS OF SUSPENDED SEDIMENTS IN DREDGED SITE OF BRACKISH LAKE NAKANOUMI
著者
秋葉 道宏 島根大学農学
橘田 隆史 島根大学農学
野田 修司 島根県工業技術センター
中村 幹雄 島根県水産試験場
森 忠洋 島根大学農学
内容記述(抄録等)
Suspended sediment accumulation in dredged sites of brackish Lake Nakanoumi has caused problems such as the release of nutrients and the generation of hydrogen sulfide. It is of great importance to know the characteristics of the suspended sediments at the dredged sites in order to control these problems. The characteristics of the suspended sediments at the dredged sites are; water content, 700%; ignition loss, 22%; Eh, -170mV; and average grain size, 10μm. By comperison, the characteristics of the suspended sediments away from the dredged site are; water content. 350%; ignition loss, 16%; Eh, +20mV; and average grain size, 20μm. Several kinds of diatoms were found in the suspended sediments at the dredged sites, the dominant species being Skeletonema sp. which frequently appears in the “red tide” of Lake Nakanoumi. Many mineral particles (mainly quartz) were found in the suspended sediments away from the dedged sites.
From these results, it was found that the characteristics of the suspended sediments at dredge site were higher water content and ignition loss, lower Eh value, and smoller grain size, compared to the sediments outside the dredge sites.
主題
Brackish lake
sediments
dredging
scanning electron microscope
water content
掲載誌名
ENVIRONMENTAL ENGINEERING RESEARCH
30
開始ページ
243
終了ページ
249
ISSN
1341-5115
ISSN(Online)
1884-829X
発行日
1993
DOI
出版者
社団法人 土木学会
出版者ヨミ
シャダン ホウジン ドボク ガッカイ
資料タイプ
学術雑誌論文
部局
生物資源科学部 環境共生科学科
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