On the relationship between catchment scale and climatological variability of surface-runoff volume

The relationship between catchment scale and climatological variability of surface-runoff volume is evaluated through theoretical and empirical analyses. Using a point description of surface-runoff volume following infiltration excess under the time compression approximation, climatological mean and...

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Bibliographic Details
Published inWater resources research Vol. 32; no. 3
Main Authors Seo, D.J. (National Weather Service, Silver Spring, MD.), Smith, J.A
Format Journal Article
LanguageEnglish
Published 01.03.1996
Subjects
AGUA
AGUA DEL SUELO
BASSIN VERSANT
CLIMATOLOGIA
CLIMATOLOGIE
CUENCAS HIDROGRAFICAS
DRAINAGE
DRENAJE
EAU
EAU DE RUISSELLEMENT
EAU DU SOL
ESCORRENTIA
HIDROLOGIA
HYDROLOGIE
LLUVIA
PLUIE
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Summary:The relationship between catchment scale and climatological variability of surface-runoff volume is evaluated through theoretical and empirical analyses. Using a point description of surface-runoff volume following infiltration excess under the time compression approximation, climatological mean and variance of areal runoff volume over heterogeneous soil are evaluated by integrating second-order statistics of point runoff volume. Second-order statistics of rainfall duration and intensity, required for evaluation of those of point runoff volume, are obtained from mean and variance of areal rainfall volume under fractional coverage considerations. Hourly Weather Surveillance Radar-1988 Doppler rainfall data were used to estimate rainfall parameters following a set of simplifying assumptions on the space-time correlation structure. Two contrasting climate-soil systems were considered in specifying soil and soil moisture parameters following a set of assumptions on spatial variability and interdependency of the soil parameters
Bibliography:P33
9612207
F06
ISSN:0043-1397
1944-7973
DOI:10.1029/95WR03641