%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Laraque, Alain
%A Lopez, J. L.
%A Yepez, S.
%A Georgescu, P.
%T Water and sediment budget of Casiquiare channel linking Orinoco and Amazon catchments, Venezuela
%B Multiscale impacts of anthropogenic and climate changes on tropical and mediterranean hydrology
%D 2019
%E Descroix, Luc
%E Mahé, Gil
%E Laraque, Alain
%E Ribolzi, Olivier
%E Lacombe, G.
%L fdi:010077346
%G ENG
%J Water
%K Casiquiare ; Orinoco ; Amazon ; bifurcation ; hydro-sedimentary budget
%K VENEZUELA
%K ORENOQUE COURS D'EAU ; AMAZONE COURS D'EAU ; CASIQUIARE CANAL
%M ISI:000495598400112
%N 10
%P art. 2068 [17 ]
%R 10.3390/w11102068
%U https://www.documentation.ird.fr/hor/fdi:010077346
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers19-12/010077346.pdf
%V 11
%W Horizon (IRD)
%X The Casiquiare River is a natural channel that connects two of the greatest rivers in the world, the Orinoco and the Amazon in the South American continent. The aim of this paper is to present a review and synthesis of the hydrological and sedimentological knowledge of the Casiquiare River, including the first hydro-sedimentary balance of the Casiquiare fluvial system conducted 9-12 September 2000 at the bifurcation and mouth during the expedition 'Humboldt-Amazonia 2000'. Bathymetric flow discharge and physico-chemical measurements were made at the inlet and outlet of the Casiquiare Channel. The main conclusions of this study indicate that Casiquiare is taking a significant proportion of flow (20% to 30%) from the Upper Orinoco basin to the Amazon basin. Throughout its 356 km-course, this chameleon channel undergoes significant morphological, hydrological, and bio-geochemical variations between the inlet and outlet, whose most visible witnesses are the increase in its width (3 to 4 times), flow (7 to 9 times), and its change in water color (white to black water), under the influence of tributaries coming from vast forest plains.
%$ 062