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Digital elevation analysis for distributed hydrological modeling: Reducing scale dependence in effective hydraulic conductivity values

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Digital elevation analysis for distributed hydrological modeling: Reducing scale dependence in effective hydraulic conductivity values. / Saulnier, Georges Marie; Beven, Keith; Obled, Charles.
In: Water Resources Research, Vol. 33, No. 9, 01.1997, p. 2097-2101.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Saulnier, GM, Beven, K & Obled, C 1997, 'Digital elevation analysis for distributed hydrological modeling: Reducing scale dependence in effective hydraulic conductivity values', Water Resources Research, vol. 33, no. 9, pp. 2097-2101. https://doi.org/10.1029/97WR00652

APA

Saulnier, G. M., Beven, K., & Obled, C. (1997). Digital elevation analysis for distributed hydrological modeling: Reducing scale dependence in effective hydraulic conductivity values. Water Resources Research, 33(9), 2097-2101. https://doi.org/10.1029/97WR00652

Vancouver

Saulnier GM, Beven K, Obled C. Digital elevation analysis for distributed hydrological modeling: Reducing scale dependence in effective hydraulic conductivity values. Water Resources Research. 1997 Jan;33(9):2097-2101. doi: 10.1029/97WR00652

Author

Saulnier, Georges Marie ; Beven, Keith ; Obled, Charles. / Digital elevation analysis for distributed hydrological modeling : Reducing scale dependence in effective hydraulic conductivity values. In: Water Resources Research. 1997 ; Vol. 33, No. 9. pp. 2097-2101.

Bibtex

@article{6f67ed34e62a4bfca99039887116a6e4,
title = "Digital elevation analysis for distributed hydrological modeling: Reducing scale dependence in effective hydraulic conductivity values",
abstract = "The recent widespread availability of digital terrain data has made automatic procedures for topographic analyses popular. Previous studies have shown that hydrological models and their effective parameter values are dependent on the resolution of the elevation grid. This paper examines the analysis of raster elevation data within the topography-based model, TOPMODEL, framework. It is demonstrated that the algorithm used in processing channel pixels in calculating the topographic index κ = In(α/tarβ) can have a dramatic effect on the sensitivity of effective parameter values to the grid size. Suggestions are made for calculating the topographic index of channel pixels, consistent with the TOPMODEL assumptions, that strongly decrease the sensitivity of the calibrated effective hydraulic conductivity values to grid size.",
author = "Saulnier, {Georges Marie} and Keith Beven and Charles Obled",
year = "1997",
month = jan,
doi = "10.1029/97WR00652",
language = "English",
volume = "33",
pages = "2097--2101",
journal = "Water Resources Research",
issn = "0043-1397",
publisher = "AMER GEOPHYSICAL UNION",
number = "9",

}

RIS

TY - JOUR

T1 - Digital elevation analysis for distributed hydrological modeling

T2 - Reducing scale dependence in effective hydraulic conductivity values

AU - Saulnier, Georges Marie

AU - Beven, Keith

AU - Obled, Charles

PY - 1997/1

Y1 - 1997/1

N2 - The recent widespread availability of digital terrain data has made automatic procedures for topographic analyses popular. Previous studies have shown that hydrological models and their effective parameter values are dependent on the resolution of the elevation grid. This paper examines the analysis of raster elevation data within the topography-based model, TOPMODEL, framework. It is demonstrated that the algorithm used in processing channel pixels in calculating the topographic index κ = In(α/tarβ) can have a dramatic effect on the sensitivity of effective parameter values to the grid size. Suggestions are made for calculating the topographic index of channel pixels, consistent with the TOPMODEL assumptions, that strongly decrease the sensitivity of the calibrated effective hydraulic conductivity values to grid size.

AB - The recent widespread availability of digital terrain data has made automatic procedures for topographic analyses popular. Previous studies have shown that hydrological models and their effective parameter values are dependent on the resolution of the elevation grid. This paper examines the analysis of raster elevation data within the topography-based model, TOPMODEL, framework. It is demonstrated that the algorithm used in processing channel pixels in calculating the topographic index κ = In(α/tarβ) can have a dramatic effect on the sensitivity of effective parameter values to the grid size. Suggestions are made for calculating the topographic index of channel pixels, consistent with the TOPMODEL assumptions, that strongly decrease the sensitivity of the calibrated effective hydraulic conductivity values to grid size.

U2 - 10.1029/97WR00652

DO - 10.1029/97WR00652

M3 - Journal article

AN - SCOPUS:0030749013

VL - 33

SP - 2097

EP - 2101

JO - Water Resources Research

JF - Water Resources Research

SN - 0043-1397

IS - 9

ER -