Tag Archives: civil engineering

Caltech grows miniature “river deltas” in a lab

About half a billion people live on fan-shaped floodplains that form where rivers meet the sea.

Those plains, called river deltas, share the same fan-like shape the world over. Even after controlling for factors like the size of the river, the slope of the land its channel traverses, and the makeup of the local soil, river deltas have a remarkably consistent shape.

Seriously. Here’s The Nile: [satelite image via NASA Godard Space Flight Center’s Flickr]

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Here’s the Yukon River in Alaska [satelite image via NASA Godard Space Flight Center’s Flickr] 

Image acquired September 22, 2002 Countless lakes, sloughs, and ponds are scattered throughout this scene of the Yukon Delta in southwest Alaska. One of the largest river deltas in the world, and protected as part of the Yukon Delta National Wildlife Refuge, the river's sinuous waterways seem like blood vessels branching out to enclose an organ. Credit: NASA/USGS/Landsat NASA image use policy. NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. Follow us on Twitter Like us on Facebook Find us on Instagram
Image acquired September 22, 2002
Countless lakes, sloughs, and ponds are scattered throughout this scene of the Yukon Delta in southwest Alaska. One of the largest river deltas in the world, and protected as part of the Yukon Delta National Wildlife Refuge, the river’s sinuous waterways seem like blood vessels branching out to enclose an organ.
Credit: NASA/USGS/Landsat
NASA image use policy.
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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