JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
Online ISSN : 1349-2853
Print ISSN : 0915-1389
ISSN-L : 0915-1389
Volume 6, Issue 2
Displaying 1-11 of 11 articles from this issue
  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 1-2
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • Masashi SHIMOTSU, Akira IWANAGA
    1993 Volume 6 Issue 2 Pages 3-11
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
    The notable features of the Kumamoto area located at the foot of the western slope of Mt.Aso(a volcano)is formed by groundwater flow based on the basin characteristics peculiar to Quarternary volcanic rocks.In utilizing and managing groundwater in such an area, the results of a hydrological analysis will be unreliable if groundwater balance with the exception of recharge from surface water and precipitation is not considered in relation to that of the hydrological cycle system as a whole.The authors have elucidated a change in the water cycle in light of the groundwater flow by means of a macroscopical water balance of each river basin in the above area.The approach adopted in this research is beneficial in the water management of the basin.
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  • Nobuko SAIGUSA, Takeshi YAMAZAKI, Kuranoshin KATO
    1993 Volume 6 Issue 2 Pages 12-16
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
    Errors are examined in land surface temperature measurements from stem thermometer. The purpose here is to estimate the errors in the temperature data observed at meteorological stations of China. One stem thermometer is only put on the soil surface, and the other stem thermometer is half buried in the soil. The actual soil surface temperature is measured by using a thermocouple.The temperature of stem thermometer is almost equivalent to the soil surface temperature if the under half of the stem thermometer is buried. However, the temperature by the stem thermometer is slightly lower when the soil surface temperature is extremely high.If the stem thermometer is only put on the soil surface, the temperature by the stem thermometer is almost always lower than the soil surface temperature (sometimes 7—8°C lower). This temperature difference is explicable by the heat budget of the stem thermometer. That is, the effect of heating by the solar radiation is less than that of cooling by the sensible heat transport from the thermometer to the air.These results give the possibility of using the stem thermometer data for various quantitative analyses.
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  • Kunio TOMOSUGI
    1993 Volume 6 Issue 2 Pages 17-27
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
    This paper deals with the main parts of the basic studies which have been carried out aiming at the establishment of a method to predict real-time risk due to a flood caused by a heavy rainfall in any minor river basin. Firstly, a rising rate of discharge, the conditions of an occurrence of a peak discharge, a concentration time of flood runoff, and the validity of the rational formula are discussed in the relations to features of a hyetograph, through the analyses of the simplest 'kinematic wave model, under the assumption of negligibility of the delay effect by a channel-network system. Secondly, a simple and graphic runoff estimation method which has two parameters, for the use in the rising period of runoff is suggested from the investigation above. Its application to the data of the floods in the minor river basins (10∼300km2) showed the usefullness of the method. There remain, however, some problems in the method for its actual use, that are estimation and stability problem of the parameters. These problems and related matters are discussed through the analysis of the data of the Tama-Newtown experimental basins.
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 28-37
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 38-44
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 45-47
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 48-57
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 64-69
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 73
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1993 Volume 6 Issue 2 Pages 74
    Published: June 10, 1993
    Released on J-STAGE: October 22, 2009
    JOURNAL FREE ACCESS
    Download PDF (77K)
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