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Application of remote sensing and geographic information system in change detection of the Netravati and Gurpur river channels, Karnataka, India / A. Kumar in Geocarto international, vol 25 n° 5 (August 2010)  

Public [article]  inGeocarto international > vol 25 n° 5 (August 2010) . - pp 397 - 425 Titre : Application of remote sensing and geographic information system in change detection of the Netravati and Gurpur river channels, Karnataka, India Type de document : Article/Communication Auteurs : A. Kumar, Auteur ; K. Jayappa, Auteur ; B. Deepika, Auteur Année de publication : 2010 Article en page(s) : pp 397 - 425 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] cours d'eau [Termes IGN] détection de changement [Termes IGN] image IRS-LISS [Termes IGN] Inde [Termes IGN] séisme [Termes IGN] système d'information géographique [Termes IGN] tectonique Résumé : (Auteur) The Netravati and Gurpur (N-G) river basins are tectonically active due to a number of seismically active faults/lineaments and their proximity to Mulki-Pulicat Lake axis. The gradient of the river channels has gradually reduced (after ?10 km from their origin) and has forced the rivers to flow slowly in meandering and zigzag paths. The nature and intensity of meanders are governed by geological and tectonic conditions of the river basins. Significant changes in river channels, between the years 1910 and 2005, have been detected in three blocks - Block-I (Netravati) and Blocks-II and III (Gurpur) - and studied in detail by comparing topographic maps with Indian Remote Sensing Satellite, LISS-III images through GIS techniques. The block-wise qualitative and quantitative changes of these channels indicate that they are narrowed and migrate towards south due to neotectonic activities, formation of braided islands, variation in flow intensity and anthropogenic interventions like construction of vented dams and sand mining. Numéro de notice : A2010-312 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2010.496004 Date de publication en ligne : 07/07/2010 En ligne : https://doi.org/10.1080/10106049.2010.496004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30506 [article]

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