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(Article of periodic en Anglais - 2006)

Document title

The topographic data source of digital terrain models as a key element in the accuracy of hydraulic flood modelling

Authors(s) and Affiliation(s)

CASAS A. ; BENITO G. ; THORNDYCRAFT V.R. ; RICO M. ;

Abstract

The effects of the topographic data source and resolution on the hydraulic modelling of floods were analysed. Seven digital terrain models (DTMs) were generated from three different altimetric sources : a global positioning system (GPS) survey and bathymetry; high-resolution laser altimetry data LiDAR (light detection and ranging); and vectorial cartography (1:5000). Selection criteria were established for the different topographic models in order to assess their generation and treatment in relation to the time-cost ratio for each methodology. the hydraulic modelling was carried out on a 2 km reach of the Ted River near Sant Juliá de Ramis near Girona in NE Spain

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2006, vol. 31, no4 [pp. 444-456]

Bibliographic references : 39 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2006.
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