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Title Transcription
エン ノウド ノ ヘンカ カラ スイテイシタ ホンジョウ スイイキ ノ ヒョウソウスイ ノ コウカンリツ
Title Alternative
Surface Water Exchange Rate of the Honjo Area in Lake Nakaumi Estimated from Salinity Change
File
language
jpn
Author
Koike, Fumito
Aizaki, Morihiro
Akiba, Michihiro
Okumura, Minoru
Fujinaga, Kaoru
Description
Water turnover in Honjo aea of Lake Nakaumi was estimated from salinity change rate. Reduced major axis method and principal component analysis were used instead of least squares method, to avoid artifact in parameter estimation. 2.26% of surface water in Honjo area were exchanged every day with the surface water of central area of Lake Nakaumi before new channel construction. 0.0403%o day^<-1> of background salinity increase was also detected. This may be caused by mixture with saline bottom water. After new channel construction between north area of Lake Nakaumi, water inflow through the new channel was although not detected. From the analysis assuming the absence of inflow through the new channel, daily inflow from central part of Lake Nakaumi was 3.42% of surface water in Honjyo area. Background salinity increase was 0.0461%o day^<-1>. Long term experiment is necessary to avoid the effect of seasonal change and episodic weathers. Comparison between the result of other method may be also helpful.
Subject
brachsh water lake
reduced major axis
principal component analysis
rate of mixture with bottom water
Journal Title
Laguna : 汽水域研究
Volume
6
Start Page
19
End Page
25
ISSN
21852995
Published Date
1999-03
NCID
AN10439529
Publisher
島根大学汽水域研究センター
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Estuary Research Center
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