IPB WARNING [2] Creating default object from empty value (Line: 91 of /modules/gallery/lib/comment_view.php)
IPB WARNING [2] Illegal string offset 'favorite_button' (Line: 697 of /cache/skin_cache/cacheid_3/skin_gallery_img.php)
IPB WARNING [2] Illegal string offset 'ecard_button' (Line: 697 of /cache/skin_cache/cacheid_3/skin_gallery_img.php)
IPB WARNING [2] Illegal string offset 'comment_button' (Line: 697 of /cache/skin_cache/cacheid_3/skin_gallery_img.php)
TREC Virtual Base Camp -> Gallery -> Viewing image
IPB

( Log In ) Log In is for TREC Teachers & Researchers only

   Send Ecard 
> Tundra Polygons
Uploaded by: Charla_Jordan On: Jan 22 2007, 01:45 PM Views: 1490 · Comments: 0
These are Tudra Polygons. They are a common feature of the arctic landscape. They are 5 to 50 meters in diameter and are formed when the ground cracks as it freezes. The network of cracks in the ground that outline the tundra polygons take decades or centuries to develop.
 5  4  3  2  1 
   
gallery_28_20_1371.jpg
   Send Ecard 
Photostrip for Climate Change and Arctic Tundra: Toolik Lake, Alaska
tn_gallery_28_20_29168.jpg
<<
tn_gallery_28_20_22470.jpg
<
tn_gallery_28_20_1371.jpg
 
tn_gallery_28_20_34661.jpg
>
tn_gallery_28_20_42021.jpg
>>
  
- NSF Acknowledgment & Disclaimer Time is now: 28th March 2024 - 09:36 AM