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(Article of periodic en Anglais - 2009)

Document title

Spatial analysis of stream power using GIS : SLK anomaly maps

Authors(s) and Affiliation(s)

PÉREZ-PEÑA J.V. (1) ; AZAÑÓN J.M. (1) ; AZOR A. (1) ; DELGADO J. (2) ; GONZÁLEZ-LODEIRO F. (1) ;
(1) Dep. de Geodinámica, Univ., Granada, ESPAGNE
(2) Dep. de Ingeniería Cartográfica, Geodésica y Fotogrametría, Univ., Jaén, ESPAGNE

Abstract

In this paper a methodology for GIS analysis of drainage networks has been presented. This analysis is particularly useful in areas that lack other tectonic, structural, or seismic data. The SL index has been normalized via the graded river gradient K. This graded river gradient characterizes the equilibrium profile and correlates with the total stream power. In light of this relation, the discharge-area proxy can be calibrated. The AA. propose the use of a normalized SL index (SLK index), to allow comparisons among rivers of different lengths and the production of SLK maps. The anomalous values of the SLK index were identified by means of a cross-validation method and related to faults and lithological contacts. In order to verify the advantages of this methodology, the AA. compared an SLK map of the NE border of the Granada basin with both simple river profile-knickpoint identification and with an SL map. Discussion of the results

Source

Article of periodic

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

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

Millesime : 2009, vol. 34, no1 [pp. 16-25]

Bibliographic references : 1 p.

Collation : 11 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1684

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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