Top Searches
1. Royalty Free Business Photos
2. St Patrick's Day Photos and Illustrations
3. Spring Photos
4. Spring Illustrations
5. Photos of Babies and Children
6. Royalty Free Family Photos
7. Illustrations of Flowers
8. People Photography
9. Royalty Free Fonts
10. Business/Finance Photography
Acclaim Images Stock Photography & Clip Art Illustrations
filler image
189,462 Searchable Stock Photos & Illustrations  

Photo Research | Customer Service | Lightbox | Shopping Cart  
Stock photo long line image

NASA Photograph of Issaouane Dune Sea, Eastern Algeria

 Stock Photo by NASA Public Domain

 Image Number: 0124-0610-2618-4635

NASA Photograph of Issaouane Dune Sea, Eastern Algeria
Issaouane Dune Sea, Eastern Algeria

  • Email this Stock Photo
  • Contact the Photographer
  • See More Images by this Photographer
  • More Stock Photo Like This
  • Stock Photo Description: ISS013-E-65526 (8 Aug. 2006) --- Issaouane Dune Sea, Eastern Algeria is featured in this image photographed by an Expedition 13 crewmember on the International Space Station. This view from one of the smaller dune seas in the central Sahara shows the complex but regular patterns produced by winds in deserts where abundant sand is available. Geologists now know that dune seas (also called ergs) comprise at least three orders of dune size. In this image the largest and oldest appear here as chains oriented about 60 degrees apart, that is, one oriented almost north-south, the other southwest-northeast. The "streets" between the dune chains (also called mega-dunes) are swept clean of sand in places, revealing the original surface, with light colored muds and salt derived from very occasional rains. The chains have probably taken hundreds of thousands of years to accumulate, starting when the Sahara began to become significantly dry roughly 2.5 million years ago. Rivers became smaller, failed to reach the sea and deposited their sand load in the desert. Wind did the rest, blowing the sand into aerodynamic dune forms. According to scientists, chain trends coincide with two of the four major trends identified in the Great Eastern Sand Sea immediately to the north. Each trend likely implies a different formative wind direction--attesting to the climate shifts that have occurred since sand began to accumulate in the central Sahara. Smaller dunes are superimposed on the mega-dunes. Sinuous crest lines are the mesoscale (intermediate in size) forms, forming octopus-like crests, especially evident as the arms of star dunes. Whereas the mega-dunes are apparently stationary, studies based on aerial photographs in other parts of the world show that these dune crests move in the course of decades. The smallest dunes appear in patches on the eastern sides of the mega-dunes as a tracery of closely spaced crests. Small dunes move fast and reform quickly as stronger winds shift with th

    Copyright: United States Government Works

    • Model Release: No

    • Property Release: No

    * This is a public domain image

    Licensing Stock Photography?
    Use the Lightbox to save and view photos and images.

    High Resolution Version - Help
    3790 x 2500 Pixels - 28.4 MB
    12.63" x 8.33" @ 300dpi
    32.08 cm x 21.16 cm
    4.0 mb RGB JPEG File

    This image is available for free use,
    "as is", with no warranty.

    Link Text for 100 x 66 Pixel Image

    Link Text for 300 x 198 Pixel Image

    Link Text for 640 x 422 Pixel Image

    Free dunes image - 300x198 pixels
    Free dunes image - 640x422 pixels
    Free dunes image - 3790x2500 - No Linking!

    Order by Phone! 888-618-8723

    NASA Photograph of Issaouane Dune Sea, Eastern Algeria

    Similar Photos:
    dunes stock photography dunes stock photograph dunes stock photograph dunes stock photography dunes image
    dunes stock photo dunes image dunes image
    More Similar Images...

    Keywords: art print, art prints, clipart, clip art, graphic, graphics, image, images, picture, pictures, photo, photos, photograph, photographs, poster, posters, stock photo, stock photos, stock photography, web graphic, web graphics , 2006, aerial, aerials, algeria, desert, dune, dune chains, dune seas, dunes, eastern algeria, ergs, expedition 13, from space, issaouane dune sea, landscape, landscapes, mega dunes, nasa, nasa public domain, sahara, sahara desert, sinuous crest lines, view from space

    Images Per Page

        Royalty Free
        Rights Managed



        Only Model Released
        Only Property Released

         search tips

    Stock Photo Topics

    Americana Stock Photos
    American Flag Photos
    Art Photos
    Automotive Photography
    Baby Photos
    Birthday Photography
    Bride Stock Photos
    Business Images
    California Photos
    Car & Truck Photos
    Cat Stock Photography
    Children Stock Photography
    Clipart Images
    Clipart Collections
    Clothing Images
    Concept Images
    Cowboy Images
    Cute Animal Pictures
    Dog Stock Photography
    Dolphin Stock Photos
    Earth Photos
    Family Stock Photography
    Financial Images
    Fireworks Photos
    Flag Photos
    Flower Stock Photography
    Food & Beverage
    Furniture Images
    Garden Stock photography
    Gas Prices
    Jewelry Images
    Halloween Images
    Hawaii Stock Photography
    Health Images
    Horse Photography
    Independence Day
    Legal Stock Photography
    Love and Romance
    Maps Stock Photography
    Medical Photos
    Military Images
    Money Images
    Music Images
    NASA Photos
    National Parks
    Nature Photos
    New York
    Obama Photos
    Office Stock Photography
    Office Supply Images
    Oregon Coast Photos
    Oregon Stock Photography
    Parent Stock Photos
    Patriotic Images
    People Stock Photography
    Pet Stock Photography
    Political Images
    Safety Images
    School Stock Photography
    Shark Photos
    Shopping Images
    Signs and Banners
    Space Photos
    Sports Images
    Summer Images
    Sunsets Photos
    Surfing Photography
    Tea Party Photos
    Travel & Tourism
    Tropical Images
    Truck Stock Photography
    Underwater Photography
    Valentine Images
    Vintage Images
    Wedding Stock Photography
    White House Photos
    Yellowstone Photos
    Yosemite Photos

    New Photos
    Image Collections
    Stock Photography Articles
    Free Images
    Digital Cameras

    Image Lists [several mb]
    All Photos
    Keyword List
    Recent Image Terms

    Cameras &
    Photography Equipment

    Nikon D5000 DSLR
    Canon EOS 5D Mark II
    Pentax K2000 Camera
    Nikon D3X
    Nikkor 14-24mm f/2.8 Lens

    Artist Login

    Professional Royalty Free Photos and Illustrations

    Millions of Stock Images at iPHOTOS.com


    Home   :   About   :   Privacy Policy   :   Help   :   Terms of Use   :   Our Photographers   :   Lightbox   :  
    Affiliates   :   Link To Us   :   Links   :   Stock Photography Resources   :   Customer Service