The influence of the pattern of moving rainstorms on overland flow

This study emphasizes the importance of spatial rainfall intensity patterns of moving rainstorms on overland flow. A simple numerical model, based on the non-linear kinematic wave, was used for comparing the results for hypothetical storms moving up and down an impervious plane surface. Simulations...

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Bibliographic Details
Published inAdvances in water resources Vol. 25; no. 7; pp. 817 - 828
Main Authors de Lima, J.L.M.P., Singh, V.P.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.07.2002
Elsevier Science
Subjects
Earth sciences
Earth, ocean, space
Exact sciences and technology
Hydrology
Hydrology. Hydrogeology
Kinematic wave
Overland flow
Rainfall pattern
Storm movement
Overland flow
Storm movement
Rainfall pattern
Kinematic wave
rainfall
urban environment
atmospheric precipitation
runoff
kinematics
rain water
digital simulation
spatial distribution
infiltration
numerical models
discharge
evaporation
hydrographs
storms
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Summary:This study emphasizes the importance of spatial rainfall intensity patterns of moving rainstorms on overland flow. A simple numerical model, based on the non-linear kinematic wave, was used for comparing the results for hypothetical storms moving up and down an impervious plane surface. Simulations were undertaken by varying the storm pattern, length, speed and direction. No account was made for time varying losses, such as infiltration, evaporation, etc. The results indicate significant differences in peak discharges and hydrograph shapes for moving storms of various patterns. The sensitivity of runoff to storm patterns decreases as storm speed increases.
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ISSN:0309-1708
1872-9657
DOI:10.1016/S0309-1708(02)00067-2