Mudanças de canal durante os últimos 60 anos no sistema anastomosado do curso médio do Rio Apure, Venezuela

Translated title of the contribution: Channel changes during the last 60 years in the anastomosing system in the midle section of the Apure River, Venezuela

Rosiris Guzmán, Maximiliano Bezada, Inmaculada Rodríguez

Research output: Contribution to journalArticle

Abstract

The channel changes in the flooding plain of the anastomosing system of the middle section of the Apure River, Venezuela, was analyzed in order to establish the lateral movements of the river margins. Also, the multi-temporal variation of the changes in the geo-morphological dynamics of the channel pattern was analyzed for an evolution period of 60 years. The data was transferred to a geographic information system (GIS) to analyze the changes that took place in five periods of evolution. Historical cartographies and aerial photography series were used, and detailed photo-interpretation of aerial photos, ortho-photo maps and topographic maps at different scales and years was performed. The river section analyzed extends from the sector known as Isla Los Padrotes to Caño la Rompida (19km in length). Results show that the architectonic pattern of the anastomosing system of the Apure River during the last 60 years is in general stable in all its network of branches, with small morpho-dynamic changes in the position of the banks and islands. The maximal margin displacements are observed at Isla Los Padrotes, although the river has maintained the same morphology in this area.

Translated title of the contributionChannel changes during the last 60 years in the anastomosing system in the midle section of the Apure River, Venezuela
Original languageSpanish
Pages (from-to)642-649
Number of pages8
JournalInterciencia
Volume38
Issue number9
StatePublished - Sep 1 2013

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