Journal article
Nonlinear response in runoff magnitude to fluctuating rain patterns
Chaos, Vol.25(3), pp.036409-036409
2015
DOI: 10.1063/1.4913200
PMID: 25833447
Abstract
The runoff coefficient of a hillslope is a reliable measure for changes in the streamflow response at the river link outlet. A high runoff coefficient is a good indicator of the possibility of flash floods. Although the relationship between runoff coefficient and streamflow has been the subject of much study, the physical mechanisms affecting runoff coefficient including the dependence on precipitation pattern remain open topics for investigation. In this paper, we analyze a rainfall-runoff model at the hillslope scale as that hillslope is forced with different rain patterns: constant rain and fluctuating rain with different frequencies and amplitudes. When an oscillatory precipitation pattern is applied, although the same amount of water may enter the system, its response (measured by the runoff coefficient) will be maximum for a certain frequency of precipitation. The significant increase in runoff coefficient after a certain pattern of rainfall can be a potential explanation for the conditions preceding flash-floods.
Details
- Title: Subtitle
- Nonlinear response in runoff magnitude to fluctuating rain patterns
- Creators
- R CurtuM Fonley
- Resource Type
- Journal article
- Publication Details
- Chaos, Vol.25(3), pp.036409-036409
- DOI
- 10.1063/1.4913200
- PMID
- 25833447
- NLM abbreviation
- Chaos
- ISSN
- 1054-1500
- eISSN
- 1089-7682
- Grant note
- DOI: 10.13039/100000001, name: National Science Foundation, award: DMS-1025483
- Language
- English
- Date published
- 2015
- Academic Unit
- Iowa Neuroscience Institute; IIHR--Hydroscience and Engineering; Mathematics
- Record Identifier
- 9983985821702771
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