A hillslope-based hydrological model using catchment area and width functions

Abstract A flow-interval hillslope discretization scheme is proposed for catchment hydrological modelling. By this scheme, a two-dimensional catchment is simplified into a one-dimensional cascade of flow intervals linked by the main stream. Each flow interval comprises a set of parallel hillslopes. The hillslope is the fundamental computational unit in the hydrological model providing lateral inflow to the main stream. The size of hillslope is determined by the catchment area and width functions. Catchment runoff is the total of hillslope responses through the river routing. Tests in four Japanese catchments showed that the model performed well on simulating the overall water balance, general flow pattern, and daily and hourly hydrographs of a whole catchment, as well as simultaneous simulation in different subcatchments. Characteristics of catchment hydrological responses and model applicability are discussed.

[1]  P. Naden.  Spatial variability in flood estimation for large catchments: the exploitation of channel network structure , 1992 .

[2]  M. G. Anderson,et al.  Overland flow and erosion. , 1990 .

[3]  Dara Entekhabi,et al.  Hillslope and Climatic Controls on Hydrologic Fluxes , 1995 .

[4]  Katumi Musiake,et al.  Spatial resolution sensitivity of catchment geomorphologic properties and the effect on hydrological simulation , 2001 .

[5]  C. Jackson,et al.  Hillslope infiltration and lateral downslope unsaturated flow , 1992 .

[6]  Keith Beven,et al.  Changing ideas in hydrology — The case of physically-based models , 1989 .

[7]  Unsaturated zone hydraulic property estimation and applications to infiltration facility analysis , 1988 .

[8]  Roger E. Smith,et al.  Mathematical simulation of interdependent surface and subsurface hydrologic processes , 1983 .

[9]  Dawen Yang,et al.  Comparison of different distributed hydrological models for characterization of catchment spatial variability , 2000 .

[10]  K. Kristensen,et al.  A MODEL FOR ESTIMATING ACTUAL EVAPOTRANSPIRATION FROM POTENTIAL EVAPOTRANSPIRATION , 1975 .

[11]  Keith Loague.  Impact of rainfall and soil hydraulic property information on runoff predictions at the hillslope scale , 1988 .

[12]  J. Nash,et al.  River flow forecasting through conceptual models part I — A discussion of principles☆ , 1970 .

[13]  Oscar J. Mesa,et al.  On the Relative Role of Hillslope and Network Geometry in Hydrologic Response , 1986 .

[14]  P. Milly.  Climate, soil water storage, and the average annual water balance , 1994 .

[15]  Christopher J. Duffy,et al.  A TWO-STATE INTEGRAL-BALANCE MODEL FOR SOIL MOISTURE AND GROUNDWATER DYNAMICS IN COMPLEX TERRAIN , 1996 .

[16]  J. Refsgaard,et al.  Operational Validation and Intercomparison of Different Types of Hydrological Models , 1996 .

[17]  R. Allan Freeze,et al.  A stochastic‐conceptual analysis of rainfall‐runoff processes on a hillslope , 1980 .

[18]  D. A. Woolhiser,et al.  KINEROS - a kinematic runoff and erosion model , 1995 .

[19]  D. Randall,et al.  A Revised Land Surface Parameterization (SiB2) for Atmospheric GCMS. Part I: Model Formulation , 1996 .

[20]  M. Sivapalan,et al.  On the relative roles of hillslope processes, channel routing, and network geomorphology in the hydrologic response of natural catchments , 1995 .

[21]  J. Rodda.  Forest Hydrology , 1965, Nature.

[22]  Dawen Yang,et al.  Description of catchment hydrological response using the catchment area function , 1999 .

[23]  K. Abromeit.  Music Received , 2023, Notes.

[24]  C. Justice,et al.  A Revised Land Surface Parameterization (SiB2) for Atmospheric GCMS. Part II: The Generation of Global Fields of Terrestrial Biophysical Parameters from Satellite Data , 1996 .

[25]  W. Brutsaert.  Evaporation into the atmosphere , 1982 .

[26]  Murugesu Sivapalan,et al.  Conservation equations governing hillslope responses: Exploring the physical basis of water balance , 2000 .

[27]  Taikan Oki,et al.  Expanding distributed hydrological modelling to the continental scale , 2001 .

[28]  Murugesu Sivapalan,et al.  INSTANTANEOUS RESPONSE FUNCTIONS OF OVERLAND FLOW AND SUBSURFACE STORMFLOW FOR CATCHMENT MODELS , 1996 .

[29]  R. Bras,et al.  A kinematic model of infiltration and runoff generation in layered and sloped soils , 1992 .