Application of Distributed Hydrological Model in the Asian Monsoon : Tropic Region with a Perspective of Coupling with Atmospheric Models
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概要
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Prediction of variations of global and regional hydrological cycles and their response to changes of climate and environment is an important topic. For this purpose, improving the ability of hydrological models has been in the direction of ever-increasing spatial scales. Owing to the highly nonlinear nature of hydrological processes and the high degree of variability of the spatial heterogeneity, distributed representation of spatial information and physical description of hydrological process are necessary. It is also important to incorporate the reglrlation of water by infrastructures (e.g., Iarge rescrvoirs) with the hydrological modeling to verify direct human influence on water resources, The GBHM (geomorphology based hydrological model) employs a flow interval-hillslopo discretization scheme in the representation of hydrological processes using catchment geomorphologic properties. The GBHM can represent the characteristics of catchment landform properly and is flexible enough to describe other spatial variability, such as land cover and soil type. In the present study, GBHM was applied to the Chao Phraya basin in Thailand, in which the GEWEX Asian Monsoon Experiment in a tropic region (GAME-T) has been carried out since 1995, for investigating the applicability of this model to regioual scale. The hydrological simulation has run from 1994 through 1995 with a drainage area of 110,000 km^2. The reservoir (Bhumibol and Sirikit) operations were incorporated with the hydrological modeling The simulated hydrographs at 16 Iocations, including two reservoirs, were compared with the river flow observations for evaluation of the model performance. The possibility of coupling GBHM with the atmosphelic model is discussed in the paper.
- 社団法人日本気象学会の論文
- 2001-03-25
著者
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沖 大幹
総合地球環境学研究所研究部
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OKI Taikan
Institute of Industrial Science, The University of Tokyo
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Herath S
Institute Of Industrial Science University Of Tokyo
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Herath Srikantha
Institute For Sustainability And Peace United Nations University
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Yang Dawen
Institute of Industrial Science, University of Tokyo
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Musiake Katumi
Institute of Industrial Science, University of Tokyo
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Yang Dawen
Laboratory Of Hydraulic Engineering Department Of Civil Engineering University Of Tokyo
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Oki Taikan
Laboratory Of Hydrology And Water Resource Institute Of Industrial Science University Of Tokyo
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Oki Taikan
Research Institute Of Humanity And Nature
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Oki Taikan
Institute Of Industrial Science The University Of Tokyo
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沖 大幹
Goddrad Space Flight Center
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Musiake Katumi
Laboratory Of Hydrology And Water Resource Institute Of Industrial Science University Of Tokyo
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Musiake Katumi
Institute Of Industrial Science University Of Tokyo
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沖 大幹
総合地球環境学研究所:東京大学生産技術研究所
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Yang Dawen
Institute Of Industrial Science University Of Tokyo
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