石原 安雄 ISHIHARA Yasuo

Articles:  1-20 of 36

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  • SEEPAGE INTO A MOUNTAINOUS TUNNEL AND RAIN-INFILTRATION  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi , MITAMURA Katuki , TANAKA Torao , HOSO Yoshinobu

    To elucidate the recharge mechanism due to infiltration of rainwater into anaquifer in a mountainous watershed, discharge of seepage into a tunnel, which issited at Yura, Wakayama, is measured at four …

    Disaster Prevention Research Institute Annuals. B (33B-2), p111-131, 1990-04

    IR 

  • STUDY ON INTEGRATED MANAGEMENT OF DISASTER PREVENTION  [in Japanese]

    ISHIHARA Yasuo

    After enomous energy produced due to an extraordinary natural phenomenon propagates tothe domain of human living,various kinds of things on the earth and social systems are destroyedby such a destruct …

    Disaster Prevention Research Institute Annuals. A (33A), p9-27, 1990-04

    IR 

  • 都市における水 (都市の水利用<特集>)  [in Japanese]

    石原 安雄

    Journal of municipal problems. 41(8), p3-16, 1989-08

  • ON THE EVAPORATION FROM BARE LAND WITH AN UNDERLYING RESTRICTED WATER TABLE  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi , HARADA Hiroshi

    In order to elucidate the evaporation mechanism from bare land, a laboratoryexperiment of evaporation from a sand layer was carried out by applying turbulentwind on the surface of the layer through a …

    Disaster Prevention Research Institute Annuals. B (32B-2), p281-295, 1989-04

    IR 

  • A NUMERICAL SIMULATION ON THE EVAPORATION IN BARE LAND (2)-EFFECT OF TIME-VARIATION OF WIND SPEED ON THE EVAPORATION-  [in Japanese]

    ISHIHARA Yasuo , KUZUHA Yasuhisa , SHIMOJIMA Eiichi

    Wind speed in turbulent boundary layer developed above ground surface usuallychanges with time in various scales. It is well known that the wind speed plays akey role in the evaporation from bare land …

    Disaster Prevention Research Institute Annuals. B (32B-2), p297-308, 1989-04

    IR 

  • A NUMERICAL SIMULATION ON THE EVAPORATION IN A BARE LAND-IN THE CASE OF A RESTRICTED GROUNDWATER TABLE-  [in Japanese]

    KUZUHA Yasuhisa , ISHIHARA Yasuo , SHIMOJIMA Eiichi

    Evaporation in a bare land occurs either under the land condition or under themeteorological one. When we intend to clarify the mechanism of the evaporation, the evaporation field must be recognized a …

    Disaster Prevention Research Institute Annuals. B (31B-2), p255-274, 1988-04

    IR 

  • FAIL-SAFE AND SAFE-FAIL IN FLOOD DISASTER REDUCTION  [in Japanese]

    ISHIHARA Yasuo

    River levees and reservoirs for flood control are usually constructed under adesign criterion decided by reliability idea. Since these are bounded in capacity ofprevention of flooding, the flooding in …

    Disaster Prevention Research Institute Annuals. B (31B-2), p369-377, 1988-04

    IR 

  • SHOCK FRONT IN KINEMATIC WAVE ROUTING OF ONE-DIMENSIONAL OVERLAND FLOW  [in Japanese]

    TOMOSUGI Kunio , ISHIHARA Yasuo

    As a part of fundamental studies approaching to the effect estimation problems ofnonuniformity of input and field in runoff analysis, properties of shock front in kinematicwave routing of one-dimensio …

    Disaster Prevention Research Institute Annuals. B (30B-2), p249-264, 1987-04

    IR 

  • Information Retrieval of Natural Disaster Science through Database "SAIGAIKS"  [in Japanese]

    ISHIHARA Yasuo , SATO Tadanobu , MATSUMURA Kazuo

    We report briefly the method to use the database, SAIGAIKS, which has been developed from 1982. SAIGAIKS includes the data related to natural disasters such as, research papers, investigative reports, …

    自然災害科学 6(3), 23-34, 1987

    NDL Digital Collections 

  • EFFECTS OF RAINFALL DISTRIBUTION FEATURES UPON FLOOD HYDROGRAPH FEATURES-APPROACH BY ANALYTICAL SOLUTIONS OF HYDRAULIC MODELS OF ELEMENTARY DIRECT-RUNOFF-FIELDS-  [in Japanese]

    TOMOSUGI Kunio , ISHIHARA Yasuo

    As a fundamental study approaching to the effect estimation problems of nonuniformity ofrunoff-fields and inputs in runoff analysis or calculation, the following items are carried out set-ting runoff …

    Disaster Prevention Research Institute Annuals. B (29B-2), p193-215, 1986-04

    IR 

  • EXPERIMENT ON INFILTRATION OF RAINFALL INTO SAND LAYER WITH A COARSER SAND PILE  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi , MINOBE Yujin

    Recognizing that the infiltration phenomenon of rain water into the ground occurs in thefinite domain between the ground surface and the bedrock or groundwater surface, we have in-vestigated the effec …

    Disaster Prevention Research Institute Annuals. B (29B-2), p271-278, 1986-04

    IR 

  • ANALYSIS ON PONDING INFILTRATION INTO CONFINED COMPOSITE SAND COLUMN  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi

    In order to clarify the mechanism of confined ponding infiltration into composite sand col-umns, penetrating phenomena in a 2-layered column where coarse-grained sand lies above fine-grained sand are …

    Disaster Prevention Research Institute Annuals. B (26B-2), p197-212, 1983-04

    IR 

  • 出水の規模と治水--二十一世紀に向けて (治水事業五箇年計画<特集>)  [in Japanese]

    石原 安雄

    MCM : Monthly construction magazine 35(9), p47-48,53〜54, 1982-09

  • STUDY ON MECHANISM OF INFILTRATION WITH PONDING  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi

    In this paper the mechanism of confined infiltration with ponding, especially the movement ofwater and pore-air in the quasi-saturated zone which developes in the neighbourhood of sand surfaceis discu …

    Disaster Prevention Research Institute Annuals. B (25B-2), p163-180, 1982-04

    IR 

  • STUDY ON MECHANISM OF CONFINED INFILTRATION (3)-Consideration by Simplified Model Experiment-  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi

    In order to examine the mechanism of exchange of water penetrating to a ground andair in pore of a ground, the simplified experiments are carried out by using the U-shapedcapillary tube which is conne …

    Disaster Prevention Research Institute Annuals. B (24B-2), p171-182, 1981-04

    IR 

  • CONFINED INFILTRATION WITH CONSTANT INTENSITY OF RAINFALL  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi

    The water falling as rain on the land penetrates downwards displacing the air in the soil.Usually at the beginning of rainfall all of water infiltrate into the soil, but thereafter, if the rainfallint …

    Disaster Prevention Research Institute Annuals. B (23B-2), p175-191, 1980-04

    IR 

  • EXPERIMENTAL STUDY ON MOTIONS OF WATER DUE TO BREAKING OF RIVER DIKE  [in Japanese]

    ISHIHARA Yasuo , KOBATAKE Shigeki

    When a river dike breaks down, the flowing water of higher level in a stream channel runs outabruptly from the part of breaking. The motion of water which runs out in an inland area hasbeen studied by …

    Disaster Prevention Research Institute Annuals. B (23B-2), p293-303, 1980-04

    IR 

  • STUDY ON MECHANISM OF CONFINED INFILTRATION (2)  [in Japanese]

    ISHIHARA Yasuo , SHIMOJIMA Eiichi

    The air existing initially in the void of soil is not free to escape, because it is needed to bedisplaced by the water falling as rains on the land surface. In order to disclose such mechanismof air-w …

    Disaster Prevention Research Institute Annuals. B (22B-2), p271-289, 1979-04

    IR 

  • DISASTER DUE TO FLOOD AND FLOOD FORECASTING  [in Japanese]

    ISHIHARA Yasuo

    Recently, in order to prevent a disaster due to a flood, embankments, reservoirs for flood control, divergent channels and so on have provided in a river basin. This paper, first of all, discribes a f …

    Disaster Prevention Research Institute Annuals. A (22A), p1-17, 1979-04

    IR 

  • STUDY ON SYNTHETIC FLOOD HYDROGRAPH  [in Japanese]

    ISHIHARA Yasuo , KOBATAKE Shigeki

    We have been studying the formation process of a hydrograph of storm runoff, using a set ofunit basins and the stream net which connects these unit basins. In the first part of this paper, we describe …

    Disaster Prevention Research Institute annuals (21B-2), p153-172, 1978-04

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