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Improved classification of drainage networks using junction angles and secondary tributary lengths.

Jung, Kichul; Marpu, Prashanth R.; Ouarda, Taha B. M. J. (2015). Improved classification of drainage networks using junction angles and secondary tributary lengths. Geomorphology , vol. 239 . p. 41-47. DOI: 10.1016/j.geomorph.2015.03.004.

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Résumé

River networks in different regions have distinct characteristics generated by geological processes. These differences enable classification of drainage networks using several measures with many features of the networks. In this study, we propose a new approach that only uses the junction angles with secondary tributary lengths to directly classify different network types. This methodology is based on observations on 50 predefined channel networks. The cumulative distributions of secondary tributary lengths for different ranges of junction angles are used to obtain the descriptive values that are defined using a power-law representation. The averages of the values for the known networks are used to represent the classes, and any unclassified network can be classified based on the similarity of the representative values to those of the known classes. The methodology is applied to 10 networks in the United Arab Emirates and Oman and five networks in the USA, and the results are validated using the classification obtained with other methods.

Type de document: Article
Mots-clés libres: drainage network geometry; confluence junction angle; secondary tributary lengths; river network classification
Centre: Centre Eau Terre Environnement
Date de dépôt: 23 avr. 2018 14:02
Dernière modification: 23 avr. 2018 14:02
URI: http://espace.inrs.ca/id/eprint/3869

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