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Alluvial Channel Patterns: How They Form and What Types Prevail in our Planet

Event Type: 
Seminar
Event Date: 
24 Apr 2017
Venue: 
EOS Seminar Room - N2-01B-28
Speaker: 
Edgardo Latrubesse
About the speaker: 

Edgardo Latrubesse is a Professor at the Department of Geography and the Environment, University of Texas at Austin, and an affiliated professor at the Department of Geology of the Sao Paulo State University-UNESP. Edgardo has a PhD in Geological Sciences was recently honored as T.W. Rivers Distinguished Professor in International Affairs at East Carolina University-USA and Corresponding Member of the National Council of Research of Argentina, CONICET. At UT Austin he is the head (PI) of the four major research laboratories and head of the international research program “Large Rivers: long term basin evolution, morphodynamics and global change” a global program aimed at large rivers throughout the world. His research interest includes geo-scientific contributions to multidisciplinary research on the Quaternary paleogeography of the tropics, hydro-geomorphology of large rivers, human impacts and global change. Edgardo is considered the most field experienced geomorphologist researchers tropical South America, and is recognized for developing field expeditions in some of the most remote and wild areas of the continent. He was member of the Executive Committee of the International Association of Geomorphologist-IAG (2001–2005) and leader of the International Geosciences Program IGCP 582-Tropical Rivers: hydro-physical processes, impacts, hazards and management project. He is currently chair of theTropical Rivers working group of IAG.

About the event: 

The present day occurrence, morphodynamics and morpho‐sedimentary characteristics of braided, meandering and anabranching rivers are reviewed. It is concluded that the scarcity of purely braided systems in large rivers is notable as they are constrained to small‐medium sized rivers, relatively short length piedmont courses and alluvial fans or proximal areas of some megafans. Meandering and mainly a variety of anabranching systems are dominant in large rivers but anabranching systems are the end member for megarivers. Once described as an oddity, anabranching rivers are currently considered fundamental representatives of the fluvial world.