scholarly journals Measurements of Two-layer Flow System at River Mouth Using ADCP

1997 ◽  
Vol 41 ◽  
pp. 1029-1034
Author(s):  
Shuzo NISHIDA ◽  
Shizuo YOSHIDA
Keyword(s):  
Flow System ◽  
River Mouth ◽  
Layer Flow

Tidal Response of Two-Layer Flow at a River Mouth

1977 ◽  
Author(s):  
Shizuo Yoshida ◽  
Masakazu Kashiwamura
Keyword(s):  
River Mouth ◽  
Layer Flow ◽  
Tidal Response

scholarly journals Modeling a two-layer flow system at the subarctic, subalpine tree line during snowmelt

2002 ◽  
Vol 38 (10) ◽  
pp. 20-1-20-8 ◽  
Author(s):  
Erica E. Leenders ◽  
Ming-ko Woo
Keyword(s):  
Flow System ◽  
Tree Line ◽  
Layer Flow

scholarly journals TIDAL RESPONSE OF TWO-LAYER FLOW AT A RIVER MOUTH

1976 ◽  
Vol 1 (15) ◽  
pp. 182 ◽  
Author(s):  
Shizuo Yoshida ◽  
Masakazu Kashiwamura
Keyword(s):  
Fresh Water ◽  
Salt Water ◽  
River Mouth ◽  
Intermittent Flow ◽  
Mean Velocity ◽  
Tidal Period ◽  
Salt Wedge ◽  
Tidal Motion ◽  
Layer Flow ◽  
Theoretical Considerations

This paper describes various features of tidal effects on the behavior of a salt wedge and on the mechanism of mixing between the salt water and the fresh water in the vicinity of a river mouth. The studies have been performed through experiments, field observations and theoretical considerations. The condition upon which the fresh water begins to show an intermittent flow-pattern owing to an increase of the tidal action, and the criterion of a transition of the mixing type from negligible into intense, were obtained, with two dimensionless parameters X and 6. The former parameter X is given by A = A0/U0T0, in which T0 is the tidal period, A0 is the tidal amplitude of the sea level, and U0 is the temporal mean velocity of the fresh water at the river mouth. The latter parameter 9 is the so-called Keulegan number. Besides, it came evident that a tidal motion of the salt wedge couldn't be understood without a consideration of the internal wave inside the mouth, which were induced by the tide, in addition to a direct effect of the tide.

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