Model Building Unit for rainfall-runoff simulation
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Accession number;07A0041884
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| Title;Model Building Unit for rainfall-runoff simulation |
| Author;
SAYAMA TAKAHIRO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
TACHIKAWA YASUTO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
TAKARA KAORU
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
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Journal Title;Abstracts for Annuals. Disaster Prevention Research Institute, Kyoto University (CD-ROM)
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Journal Code:S0431B
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ISSN:
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VOL.;NO.49;PAGE.NO.49B,27-43(2006)
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| Figure&Table&Reference;FIG.18, TBL.1, REF.21 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;This paper investigates the appropriate spatial resolution to reflect hydrologic variabilities for flood simulation with rainfall-runoff models. It defines Model Building Unit (MBU) as a maximum catchment area in which statistical representation of the input variables is acceptable. Interactions among rainfall distributions, catchment distributions, and river channel effects determine the size of MBU. This paper clarifies the interactions and quantifies MBU by numerical simulations with a distributed rainfall-runoff model. The simulation results showed that MBU is restricted mainly by river channel effects and it is quantified as absolute size regardless the catchment scale if it is between 150 km'2' and 1500 km'2'. MBU is 300 km'2' for 5 % of allowable relative peak error. (author abst.) |
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