言語 |
日本語
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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
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日本語以外のタイトル | CHARACTERISTICS OF SUSPENDED SEDIMENTS IN DREDGED SITE OF BRACKISH LAKE NAKANOUMI
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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
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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
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掲載誌名 |
ENVIRONMENTAL ENGINEERING RESEARCH
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巻 | 30
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開始ページ | 243
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終了ページ | 249
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ISSN | 1341-5115
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ISSN(Online) | 1884-829X
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発行日 | 1993
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DOI | |
出版者 | 社団法人 土木学会
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出版者ヨミ | シャダン ホウジン ドボク ガッカイ
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資料タイプ |
学術雑誌論文
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部局 |
生物資源科学部
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