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[in Japanese]
1989 Volume 2 Issue 2 Pages
1-2
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
3-6
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
7-9
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
11-16
Published: November 10, 1989
Released on J-STAGE: February 10, 2010
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[in Japanese]
1989 Volume 2 Issue 2 Pages
21
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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Soroosh Sorooshian
1989 Volume 2 Issue 2 Pages
22
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
23
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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Junsei KONDO
1989 Volume 2 Issue 2 Pages
25-32
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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A New concept of the heat balance equation at the ground is introduced. Physical explanation on the equilibrium evaporation and its application to the estimation of evaporation from various humid grounds are made. The result shows that the ratios of real evaporation to equilibrium evaporation are ranging from 0.5 to 1.5.
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Tohru Kanda, Hideo Itsuji, Yoshihiro Ueda
1989 Volume 2 Issue 2 Pages
33-39
Published: November 10, 1989
Released on J-STAGE: February 10, 2010
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An expert system for the real-time operation of a flood-control reservoir is formulated and its applicability to the extreme floods is examined. We show that the ordinary rules of operation of the reservoir can be described by production rules. When the conventional rules of operation are used during the flood where inflow exceeds that of the design flood, the outflow increases rapidly and has a large peak. Using the inference system which includes a flood prediction model and optimizing routines, these problems can be resolved.
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Kiyoshi Tateya, Mutsuhiro Fujita
1989 Volume 2 Issue 2 Pages
41-48
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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Various types of the lumped runoff model have been treated for practical uses. For example, the so- called storage function model, i.e. the model based on storage-discharge relationship, has been widely accepted. The characteristics of the storage function model have been examined empirically in several of the actual watersheds. These have also been discussed theoretically with the help of the kinematic wave method on the mountainside. However, in the channel regions, the discharge depends on the characteristics of the channel networks. This paper shows that parameters of the storage function model can be estimated by the characteristics of channel networks and the flow velocity.
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Yoshio TSUBOYAMA, Toshiaki SAMMORI
1989 Volume 2 Issue 2 Pages
49-56
Published: November 10, 1989
Released on J-STAGE: February 10, 2010
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In order to examine the effect of forest on runoff process in a hillslope, numerical simulation of seepage was carried out under several conditions associated with canopy interception and evapotranspiration. As a result the following has been suggested; 1) Discharge recesses more quickly in case of a forested slope than in case of a bare slope because of different sensitivity to evaporation suppression. 2) Water uptake by tree roots causes larger moisture deficit than soil evaporation and it moderates the response of storm hydrographs as an antecedent moisture condition. 3) Canopy interception decreases amount and intensity of net rainfall and it causes reduction of peak flow and delay of peak time of stormflow.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1989 Volume 2 Issue 2 Pages
57-64
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
65-66
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
67-68
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese]
1989 Volume 2 Issue 2 Pages
68-69
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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1989 Volume 2 Issue 2 Pages
73-78
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1989 Volume 2 Issue 2 Pages
79
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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1989 Volume 2 Issue 2 Pages
80
Published: November 10, 1989
Released on J-STAGE: October 22, 2009
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