Catchment hydrologic response with a fully distributed triangulated irregular network model

Valeriy Y. Ivanov, Enrique Vivoni, Rafael L. Bras, Dara Entekhabi

Research output: Contribution to journalArticle

217 Citations (Scopus)

Abstract

This study explores various aspects of catchment hydrology based on a mechanistic modeling of distributed watershed processes. A new physics-based, distributed-parameter hydrological model that uses an irregular spatial discretization is introduced. The model accounts, on a continuous basis, for the processes of rainfall interception, evapotranspiration, moisture dynamics in the unsaturated and saturated zones, and runoff routing. Simulations of several mid- to large-sized watersheds (∼103 km2) highlight various dynamic relationships between the vadose zone-groundwater processes and their dependence on the land surface characteristics. It is argued that the model inferences can be used for interpretation of distributed relationships in a catchment. By exploiting a multiple-resolution representation, the hydrologic features of the watershed terrain are captured with only 5-10% of the original grid nodes. This computational efficiency suggests the feasibility of the operational use of fully distributed, physics-based models for large watersheds.

Original languageEnglish (US)
JournalWater Resources Research
Volume40
Issue number11
DOIs
StatePublished - Nov 2004
Externally publishedYes

Fingerprint

triangulated irregular network
Watersheds
Catchments
watershed
catchment
vadose zone
physics
Physics
Evapotranspiration
Hydrology
phreatic zone
watershed hydrology
interception
Computational efficiency
routing
Runoff
Rain
evapotranspiration
Groundwater
land surface

Keywords

  • Catchment hydrology
  • Distributed hydrological model
  • Multiple resolution
  • Runoff generation
  • Streamflow
  • Triangulated irregular network (TIN)

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

Cite this

Catchment hydrologic response with a fully distributed triangulated irregular network model. / Ivanov, Valeriy Y.; Vivoni, Enrique; Bras, Rafael L.; Entekhabi, Dara.

In: Water Resources Research, Vol. 40, No. 11, 11.2004.

Research output: Contribution to journalArticle

Ivanov, Valeriy Y. ; Vivoni, Enrique ; Bras, Rafael L. ; Entekhabi, Dara. / Catchment hydrologic response with a fully distributed triangulated irregular network model. In: Water Resources Research. 2004 ; Vol. 40, No. 11.
@article{73e087c4c0404452acd3c2a5568049e3,
title = "Catchment hydrologic response with a fully distributed triangulated irregular network model",
abstract = "This study explores various aspects of catchment hydrology based on a mechanistic modeling of distributed watershed processes. A new physics-based, distributed-parameter hydrological model that uses an irregular spatial discretization is introduced. The model accounts, on a continuous basis, for the processes of rainfall interception, evapotranspiration, moisture dynamics in the unsaturated and saturated zones, and runoff routing. Simulations of several mid- to large-sized watersheds (∼103 km2) highlight various dynamic relationships between the vadose zone-groundwater processes and their dependence on the land surface characteristics. It is argued that the model inferences can be used for interpretation of distributed relationships in a catchment. By exploiting a multiple-resolution representation, the hydrologic features of the watershed terrain are captured with only 5-10{\%} of the original grid nodes. This computational efficiency suggests the feasibility of the operational use of fully distributed, physics-based models for large watersheds.",
keywords = "Catchment hydrology, Distributed hydrological model, Multiple resolution, Runoff generation, Streamflow, Triangulated irregular network (TIN)",
author = "Ivanov, {Valeriy Y.} and Enrique Vivoni and Bras, {Rafael L.} and Dara Entekhabi",
year = "2004",
month = "11",
doi = "10.1029/2004WR003218",
language = "English (US)",
volume = "40",
journal = "Water Resources Research",
issn = "0043-1397",
publisher = "American Geophysical Union",
number = "11",

}

TY - JOUR

T1 - Catchment hydrologic response with a fully distributed triangulated irregular network model

AU - Ivanov, Valeriy Y.

AU - Vivoni, Enrique

AU - Bras, Rafael L.

AU - Entekhabi, Dara

PY - 2004/11

Y1 - 2004/11

N2 - This study explores various aspects of catchment hydrology based on a mechanistic modeling of distributed watershed processes. A new physics-based, distributed-parameter hydrological model that uses an irregular spatial discretization is introduced. The model accounts, on a continuous basis, for the processes of rainfall interception, evapotranspiration, moisture dynamics in the unsaturated and saturated zones, and runoff routing. Simulations of several mid- to large-sized watersheds (∼103 km2) highlight various dynamic relationships between the vadose zone-groundwater processes and their dependence on the land surface characteristics. It is argued that the model inferences can be used for interpretation of distributed relationships in a catchment. By exploiting a multiple-resolution representation, the hydrologic features of the watershed terrain are captured with only 5-10% of the original grid nodes. This computational efficiency suggests the feasibility of the operational use of fully distributed, physics-based models for large watersheds.

AB - This study explores various aspects of catchment hydrology based on a mechanistic modeling of distributed watershed processes. A new physics-based, distributed-parameter hydrological model that uses an irregular spatial discretization is introduced. The model accounts, on a continuous basis, for the processes of rainfall interception, evapotranspiration, moisture dynamics in the unsaturated and saturated zones, and runoff routing. Simulations of several mid- to large-sized watersheds (∼103 km2) highlight various dynamic relationships between the vadose zone-groundwater processes and their dependence on the land surface characteristics. It is argued that the model inferences can be used for interpretation of distributed relationships in a catchment. By exploiting a multiple-resolution representation, the hydrologic features of the watershed terrain are captured with only 5-10% of the original grid nodes. This computational efficiency suggests the feasibility of the operational use of fully distributed, physics-based models for large watersheds.

KW - Catchment hydrology

KW - Distributed hydrological model

KW - Multiple resolution

KW - Runoff generation

KW - Streamflow

KW - Triangulated irregular network (TIN)

UR - http://www.scopus.com/inward/record.url?scp=4143151830&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4143151830&partnerID=8YFLogxK

U2 - 10.1029/2004WR003218

DO - 10.1029/2004WR003218

M3 - Article

VL - 40

JO - Water Resources Research

JF - Water Resources Research

SN - 0043-1397

IS - 11

ER -