Friday, 28 November 2014

Amazing Meandering River Timelapse

Wow check out this amazing time lapse footage of the Ucayali River (Rio Ucayali) in Peru. If you look at the top of the image you can see the meanders becoming more and sinuous until on ox-bow lake is formed to the east and then to the west of the river, each one filling in to become a meander scar. As soon as the bends are cut off and the river becomes slightly straighter, the asymmetrical erosion immediately starts to make the river bend once again.

It would be great to see this over a longer period of time. If you find the river on Google Earth it's fascinating to move along it and see the beauty of its meanders and Ob-box lakes, and how it sometimes splits up into braids. These landforms look so much prettier in real life than the uniform textbook diagram of a meander. It's almost as if the river is refusing to flow in a straight line because she's an artist or a dancer, painting and dancing through the landscape as she goes. 

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