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タイトルヨミ
ナカウミ タンスイカ カテイ ニオケル エンブン カクサン キコウ ダイ2ホウ コテイ マサツ ケイスウ ノ スイテイ
日本語以外のタイトル
Studies on the Mechanism of the Saliinity Diffusion in Nakaumi Sea, Shimane Prefecture(II) : On the Estimation of the Bottom Friction Coefficient
ファイル
言語
日本語
著者
福間 順
内容記述(抄録等)
One of the nlost important problems in the hydraulic model test to investigate lake current variation is how to assume the value of the bottom friction coeficient defilned by C_f=τ_b/ρU^2_b in which τb is shearing stress acorss the bottom, ρ density of fluid and U_b bottom velocity of flow. Several methods to estimate C_f, wave spectrum method, significant wave method were proposed, but for the lack of data it is impossible to apply the methods mentioned to the case of Nakaumi Sea. In this paper, from shearing stress caused by wind on the water surface and hydraulic gradient observed on Shinji Lake, the value of C_f is quantatively estimated on the assumption that the hydraulic pecurialities of Shinji Lake can be regarded as similar to that of Nakaumi Sea for the limited purpose of the investigation of the lake current variation. The values of C_f obtained ranges from 2 × <10>^<-3> to 24 × <10>^<-3> (C.G.S) and the mean value of C_f is nearly 7 × <10>^<-3> (C.G.S). It should be noticed that these values of C_f are nearly equal to the values generally expected and no correlation between C_f and wind velocity W is recognized so far as the results obtained up to the present are considered. Some suggestions to the future studies are given by the author's trial calculations.
掲載誌名
島根農科大学研究報告
15
開始ページ
(A-4)8-13
ISSN
05598311
発行日
1967-01-31
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
生物資源科学部
備考
A,Bを含む
開学十五周年記念号(Commemoration Issue for the 15th Aniversary)
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