One- and two-dimensional modelling of overland flow in semiarid shrubland, Jornada basin, New Mexico

被引:24
作者
Howes, DA
Abrahams, AD
Pitman, EB
机构
[1] Compliance Serv Int, Lakewood, WA 98499 USA
[2] SUNY Buffalo, Dept Geog, Buffalo, NY 14261 USA
[3] SUNY Buffalo, Dept Math, Buffalo, NY 14260 USA
关键词
runoff; overland flow; infiltration; drainage basin; hydrology;
D O I
10.1002/hyp.5922
中图分类号
TV21 [水资源调查与水利规划];
学科分类号
081501 ;
摘要
Two distributed parameter models, a one-dimensional (ID) model and a two-dimensional (2D) model, are developed to simulate overland flow in two small semiarid shrubland watersheds in the Jornada basin, southern New Mexico. The models are event-based and represent each watershed by an array of 1-m(2) cells, in which the cell size is approximately equal to the average area of the shrubs. Each model uses only six parameters, for which values are obtained from field surveys and rainfall simulation experiments. In the 1D model, flow volumes through a fixed network are computed by a simple finite-difference solution to the ID kinematic wave equation. In the 2D model, flow directions and volumes are computed by a second-order predictor-corrector finite-difference solution to the 2D kinematic wave equation, in which flow routing is implicit and may vary in response to flow conditions. The models are compared in terms of the runoff hydrograph and the spatial distribution of runoff. The simulation results suggest that both the 1D and the 2D models have much to offer as tools for the large-scale study of overland flow. Because it is based on a fixed flow network, the 1D model is better suited to the study of runoff due to individual rainfall events, whereas the 2D model may, with further development, be used to study both runoff and erosion during multiple rainfall events in which the dynamic nature of the terrain becomes an important consideration. Copyright 2006 John Wiley & Sons, Ltd.
引用
收藏
页码:1027 / 1046
页数:20
相关论文
共 39 条
[1]  
ABRAHAMS AD, 2005, STRUCTURE FUNCTION C
[2]  
[Anonymous], 1998, ENTROPY BASED PARAME, DOI DOI 10.1007/978-94-017-1431-0
[3]  
BAIRD AJ, 1997, ARID ZONE GEOMORPHOL, P153
[4]   PHYSICALLY-BASED DISTRIBUTED MODELING OF AN UPLAND CATCHMENT USING THE SYSTEME HYDROLOGIQUE EUROPEEN [J].
BATHURST, JC .
JOURNAL OF HYDROLOGY, 1986, 87 (1-2) :79-102
[5]   CHANGING IDEAS IN HYDROLOGY - THE CASE OF PHYSICALLY-BASED MODELS [J].
BEVEN, K .
JOURNAL OF HYDROLOGY, 1989, 105 (1-2) :157-172
[6]   SIMPLIFIED 2ND-ORDER GODUNOV-TYPE METHODS [J].
DAVIS, SF .
SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING, 1988, 9 (03) :445-473
[7]  
DEVENANT SB, 1871, FRENCH ACAD SCI, V73
[8]  
FLANGAN DC, 1995, 10 NAT SOIL ER LAB W
[9]   A STOCHASTIC-CONCEPTUAL ANALYSIS OF RAINFALL-RUNOFF PROCESSES ON A HILLSLOPE [J].
FREEZE, RA .
WATER RESOURCES RESEARCH, 1980, 16 (02) :391-408
[10]  
Gao X. G., 1993, Environmental modeling with GIS., P182