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Title Transcription
ナカウミ コシンブ ニオケル コテイ ノ スイチュウ エイゾウ ソノ4 : 2004ネン ト 2005ネン ノ ヒカク
Title Alternative (English)
Bottom floor pictures in Lake Nakaumi (part 4) : Comparative study of bottom condition in 2004 and 2006
File
language
jpn
Attribute
Natural Science
Author
Nomura, Ritsuo
Description
A long-term monitoring waterproof camera was set up in the bottom of Lake Nakaumi at a depth of 6.5m, over 2.5 weeks of Nov. 9- Nov.26, 2004. There were several times to record a wind speed of over 10m/s. However, no bottom water turbulence occurred in such a wind speed within a one hour wind blowing. Winnowing of bottom sediments occurred in the condition of the wind speeds > 10m/s and >5..6 hours blowing, in November 12 and 26. The bottom water turbulence was not only controlled by the wind speed, but also a period of duration. The quality of water is also influenced by a wind stress. A mixing of upper and middle waters occurred after 6..8 hours on both days. Bottom water, however, was very stable without the mixing of upper water.
The water dynamics and lake floor condition that responded to a wind stress were compared with those of 2006. The response of the water and bottom sediment to wind stress was not always the same; there were different responses of the upper and middle waters and different water clarity. A subtle change of lake environments makes it difficult to reconfirm the influence of wind stress.
Journal Title
島根大学教育学部紀要
Volume
42
Start Page
81
End Page
85
ISSN
18808581
Published Date
2008-12-25
NCID
AA12171265
Publisher
島根大学教育学部
Publisher Aalternative
Faculty of Education Shimane University
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Faculty of Education
Remark
39-41+ / 2006-2007
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