#confluence – @earthstory on Tumblr

Confluence Look at this image and try to find the Rio Negro – my eyes actually skipped over it at first because of how incredibly dark it looks. At this spot in the rainforest of Brazil, the longest black water river in the world – the Rio Negro – comes together with the muddy Solimões River. The two waters run side by side for several kilometers before they fully mix as the Rio Negro is warmer and moving more slowly than the waters of the Solimões River, so for some distance the dark water floats on top.

Source: business.facebook.com

#Solimões River #rio negro #amazon #confluence #manaus #brazil #earth from space #color #tannin #sediment #science #mixing #water #the earth story

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The Baker river in Chilean Patagonia. This river remains one of the largest undammed freeflowing rivers in the world due to the hard work of local and international efforts. Watching local kayakers @Jlancasterkayaker and @Nicomdelarosa interact with churning colors of the glacial confluence and the dangerous double overhead class 5+ below was quite the testament to this wild place. Hoping it says the course of conservation for generations to come!

#Chile #patagonia #nature #video #drone #travel #kayak #rapids #eddy #mixing #water #confluence #national geographic #instagram #the earth story

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mountrainiernps

Landscape Language

Confluence (noun) – the flowing together of two or more streams

Mount Rainier, with its glaciers and deep winter snow pack, is the source of many creeks and streams. As the creeks flow down the mountain they merge and grow, eventually joining into powerful rivers. The meeting point where two creeks flow together as one is called their confluence. Sometimes the merge appears seamless but sometimes it is more noticeable, as in this photo where one creek is brown with sediment. Eventually the waters mix into the same color as they all continue to flow down the mountain. Have you seen this phenomenon at other river confluences in the park?

NPS Photo of Ohanapecosh River & Chinook Creek, 1981. A brown, muddy creek flows into a larger river with blue-green water. ~kl

#mount rainier #geology #confluence #nature #landscape #national park #the earth story

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The meeting of the Green River (left) and the Colorado River (Right) in Canyonlands National Park, Utah

#Green River #Colorado River #Confluence #Geology #National park #Erosion #canyon #Cliff #water #Travel #Nature #Landscape #Canyonlands #Utah #Find your park #River #Stream #instagram #the earth story

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Confluence

This amazing picture is of the confluence of the Rio Negro and Rio Solimões near Manaus, Brazil. The waters of the Rio Negro are stained a dark brown from the tannins of decayed leaves and other plant matter. The Rio Solimões is a light ‘coffee’ color because it carries loads of sediment from the Andes Mountains. The different waters continue for several kilometers downstream with little mixing leading to this amazing contrast in color that can even be seen while on the river.

Just a bit of added trivia, in Brazil the Amazon River is officially formed at this confluence, however, elsewhere the name Amazon is used much farther upstream, at confluence of the Marañón and Ucayali rivers in Peru.

-Adam

Image Credit: NASA’s Earth Observing-1 (EO-1) satellite