Orbital View: Tidal Flats and Channels in the Bahamas

Via NASA's Expedition 26 crew:


tidal flats.jpg

While in orbit aboard the International Space Station, an astronaut from NASA's Expedition 26 crew snapped this clear shot of the tidal flats and channels near Sandy Cay, on the western side of Long Island and along the eastern margin of the Great Bahama Bank. Composed mainly of carbonate sediments ringed by reefs, the sediments were formed mostly from the skeletal remains of organisms settling to the sea floor; over geologic time, these sediments consolidated to form carbonate sedimentary rocks such as limestone. 

The continuously exposed parts of the island are brown, a result of soil formation and vegetation growth. Light blue-green regions indicate shallow water on the tidal flat, while the channels and areas to the south of the island have a vivid blue color that indicates deeper water.
Presented by

Jared Keller is a former associate editor for The Atlantic and The Atlantic Wire and has also written for Lapham's Quarterly's Deja Vu blog, National Journal's The Hotline, Boston's Weekly Dig, and Preservation magazine. 

Does This Child Need Marijuana?

Dravet Syndrome is a severe form of epilepsy that affects children. Could marijuana oils alleviate their seizures?

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register with Disqus.

Please note that The Atlantic's account system is separate from our commenting system. To log in or register with The Atlantic, use the Sign In button at the top of every page.

blog comments powered by Disqus

Video

Does This Child Need Marijuana?

Inside a family's fight to use marijuana oils to treat epilepsy

Video

A Miniature 1950s Utopia

A reclusive artist built this idealized suburb to grapple with his painful childhood memories.

Video

Why Principals Matter

Nadia Lopez didn't think anybody cared about her school. Then the Internet heard her story.

Video

A History of Contraception

In the 16th century, men used linen condoms laced shut with ribbons.

Video

'A Music That Has No End'

In Spain, a flamenco guitarist hustles to make a modest living.

More in Global

Just In