BTOP model to extend TOPMODEL for distributed hydrological simulation of large basins

Topography is a dominant factor in hillslope hydrology. TOPMODEL, which uses a topographical index derived from a simplified steady state assumption of mass balance and empirical equations of motion over a hillslope, has many advantages in this respect. Its use has been demonstrated in many small ba...

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Bibliographic Details
Published in:Hydrological processes 2008-08, Vol.22 (17), p.3236-3251
Main Authors: Takeuchi, Kuniyoshi, Hapuarachchi, Prasantha, Zhou, Maichun, Ishidaira, Hiroshi, Magome, Jun
Format: Article
Language:English
Subjects:
BTOP
Earth sciences
Earth, ocean, space
effective contributing area
Exact sciences and technology
Freshwater
groundwater dischargeability
Hydrology
Hydrology. Hydrogeology
mean groundwater travel distance
TOPMODEL
YHyM
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Summary:Topography is a dominant factor in hillslope hydrology. TOPMODEL, which uses a topographical index derived from a simplified steady state assumption of mass balance and empirical equations of motion over a hillslope, has many advantages in this respect. Its use has been demonstrated in many small basins (catchment areas of the order of 2-500 km²) but not in large basins (catchment areas of the order of 10 000-100 000 km²). The objective of this paper is to introduce the Block-wise TOPMODEL (BTOP) as an extension of the TOPMODEL concept in a grid based framework for distributed hydrological simulation of large river basins. This extension was made by redefining the topographical index by using an effective contributing area af(a) (0
ISSN:0885-6087
1099-1085
DOI:10.1002/hyp.6910