Controls on runoff generation and scale-dependence in a distributed hydrologic model

Enrique Vivoni, D. Entekhabi, R. L. Bras, V. Y. Ivanov

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

Hydrologic response in natural catchments is controlled by a set of complex interactions between storm properties, basin characteristics and antecedent wetness conditions. This study investigates the transient runoff response to spatially-uniform storms of varying properties using a distributed model of the coupled surface-subsurface system, which treats heterogeneities in topography, soils and vegetation. We demonstrate the control that the partitioning into multiple runoff mechanisms (infiltration-excess, saturation-excess, perched return flow and groundwater exfiltration) has on nonlinearities in the rainfall-runoff transformation and its scale-dependence. Antecedent wetness imposed through a distributed water table position is varied to illustrate its effect on runoff generation. Results indicate that transitions observed in basin flood response and its nonlinear and scale-dependent behavior can be explained by shifts in the surface-subsurface partitioning. An analysis of the spatial organization of runoff production also shows that multiple mechanisms have specific catchment niches and can occur simultaneously in the basin. In addition, catchment scale plays an important role in the distribution of runoff production as basin characteristics (soils, vegetation, topography and initial wetness) are varied with basin area. For example, we illustrate how storm characteristics and antecedent wetness play an important role in the scaling properties of the catchment runoff ratio.

Original languageEnglish (US)
Pages (from-to)1683-1701
Number of pages19
JournalHydrology and Earth System Sciences
Volume11
Issue number5
StatePublished - 2007
Externally publishedYes

Fingerprint

runoff
catchment
basin
partitioning
topography
antecedent conditions
vegetation
nonlinearity
water table
niche
infiltration
soil
saturation
rainfall
groundwater

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Water Science and Technology

Cite this

Controls on runoff generation and scale-dependence in a distributed hydrologic model. / Vivoni, Enrique; Entekhabi, D.; Bras, R. L.; Ivanov, V. Y.

In: Hydrology and Earth System Sciences, Vol. 11, No. 5, 2007, p. 1683-1701.

Research output: Contribution to journalArticle

Vivoni, Enrique ; Entekhabi, D. ; Bras, R. L. ; Ivanov, V. Y. / Controls on runoff generation and scale-dependence in a distributed hydrologic model. In: Hydrology and Earth System Sciences. 2007 ; Vol. 11, No. 5. pp. 1683-1701.
@article{4a30488e97fc467282890ed874ae1f6e,
title = "Controls on runoff generation and scale-dependence in a distributed hydrologic model",
abstract = "Hydrologic response in natural catchments is controlled by a set of complex interactions between storm properties, basin characteristics and antecedent wetness conditions. This study investigates the transient runoff response to spatially-uniform storms of varying properties using a distributed model of the coupled surface-subsurface system, which treats heterogeneities in topography, soils and vegetation. We demonstrate the control that the partitioning into multiple runoff mechanisms (infiltration-excess, saturation-excess, perched return flow and groundwater exfiltration) has on nonlinearities in the rainfall-runoff transformation and its scale-dependence. Antecedent wetness imposed through a distributed water table position is varied to illustrate its effect on runoff generation. Results indicate that transitions observed in basin flood response and its nonlinear and scale-dependent behavior can be explained by shifts in the surface-subsurface partitioning. An analysis of the spatial organization of runoff production also shows that multiple mechanisms have specific catchment niches and can occur simultaneously in the basin. In addition, catchment scale plays an important role in the distribution of runoff production as basin characteristics (soils, vegetation, topography and initial wetness) are varied with basin area. For example, we illustrate how storm characteristics and antecedent wetness play an important role in the scaling properties of the catchment runoff ratio.",
author = "Enrique Vivoni and D. Entekhabi and Bras, {R. L.} and Ivanov, {V. Y.}",
year = "2007",
language = "English (US)",
volume = "11",
pages = "1683--1701",
journal = "Hydrology and Earth System Sciences",
issn = "1027-5606",
publisher = "European Geosciences Union",
number = "5",

}

TY - JOUR

T1 - Controls on runoff generation and scale-dependence in a distributed hydrologic model

AU - Vivoni, Enrique

AU - Entekhabi, D.

AU - Bras, R. L.

AU - Ivanov, V. Y.

PY - 2007

Y1 - 2007

N2 - Hydrologic response in natural catchments is controlled by a set of complex interactions between storm properties, basin characteristics and antecedent wetness conditions. This study investigates the transient runoff response to spatially-uniform storms of varying properties using a distributed model of the coupled surface-subsurface system, which treats heterogeneities in topography, soils and vegetation. We demonstrate the control that the partitioning into multiple runoff mechanisms (infiltration-excess, saturation-excess, perched return flow and groundwater exfiltration) has on nonlinearities in the rainfall-runoff transformation and its scale-dependence. Antecedent wetness imposed through a distributed water table position is varied to illustrate its effect on runoff generation. Results indicate that transitions observed in basin flood response and its nonlinear and scale-dependent behavior can be explained by shifts in the surface-subsurface partitioning. An analysis of the spatial organization of runoff production also shows that multiple mechanisms have specific catchment niches and can occur simultaneously in the basin. In addition, catchment scale plays an important role in the distribution of runoff production as basin characteristics (soils, vegetation, topography and initial wetness) are varied with basin area. For example, we illustrate how storm characteristics and antecedent wetness play an important role in the scaling properties of the catchment runoff ratio.

AB - Hydrologic response in natural catchments is controlled by a set of complex interactions between storm properties, basin characteristics and antecedent wetness conditions. This study investigates the transient runoff response to spatially-uniform storms of varying properties using a distributed model of the coupled surface-subsurface system, which treats heterogeneities in topography, soils and vegetation. We demonstrate the control that the partitioning into multiple runoff mechanisms (infiltration-excess, saturation-excess, perched return flow and groundwater exfiltration) has on nonlinearities in the rainfall-runoff transformation and its scale-dependence. Antecedent wetness imposed through a distributed water table position is varied to illustrate its effect on runoff generation. Results indicate that transitions observed in basin flood response and its nonlinear and scale-dependent behavior can be explained by shifts in the surface-subsurface partitioning. An analysis of the spatial organization of runoff production also shows that multiple mechanisms have specific catchment niches and can occur simultaneously in the basin. In addition, catchment scale plays an important role in the distribution of runoff production as basin characteristics (soils, vegetation, topography and initial wetness) are varied with basin area. For example, we illustrate how storm characteristics and antecedent wetness play an important role in the scaling properties of the catchment runoff ratio.

UR - http://www.scopus.com/inward/record.url?scp=35349022143&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=35349022143&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:35349022143

VL - 11

SP - 1683

EP - 1701

JO - Hydrology and Earth System Sciences

JF - Hydrology and Earth System Sciences

SN - 1027-5606

IS - 5

ER -