Photos: 'Earth As Art' poll includes stunning views of Alaska

Yukon Delta: After beginning in northern British Columbia and flowing through Yukon in Canada, the Yukon River crosses Alaska, USA, before emptying into the Bering Sea. Countless lakes, sloughs, and ponds are scattered throughout this scene of the Yukon Delta. The river's sinuous, branching waterways seem like blood vessels branching out to enclose an organ. It is one of the largest river deltas in the world, and currently (2010) protected as part of the Yukon Delta National Wildlife Refuge.
U.S. Department of the Interior / U.S. Geological Survey
Yukon Delta #2: An intricate maze of small lakes and waterways define the Yukon Delta at the confluence of Alaska's Yukon and Kuskokwim Rivers with the frigid Bering Sea. Wildlife abounds on the delta and offshore where sheets of sea ice form during the coldest months of the year.
U.S. Department of the Interior / U.S. Geological Survey
Malaspina Glacier: The tongue of the Malaspina Glacier, the largest glacier in Alaska, fills most of this image. The Malaspina lies west of Yakutat Bay and covers 1,500 sq mi (3,880 sq km).
U.S. Department of the Interior / U.S. Geological Survey
Aleutian Clouds: These cloud formations were seen over the western Aleutian Islands. Their color variations are probably due to differences in temperature and in the size of water droplets that make up the clouds.
U.S. Department of the Interior / U.S. Geological Survey
Von Karman Vortices: As air flows over and around objects in its path, spiraling eddies, known as Von Karman vortices, may form. The vortices in this image were created when prevailing winds sweeping east across the northern Pacific Ocean encountered Alaska's Aleutian Islands.
U.S. Department of the Interior / U.S. Geological Survey
Craig Medred

The U.S. Geological Survey photo contest "Earth As Art" features five beautiful photos of Alaska, and now is the time to vote on your favorites.

To celebrate the 40th Anniversary of the Landsat Program on July 23, 2012, we'd like your help in selecting the top 5 "Earth as Art" images from the more than 120 scenes in our collection.

For 40 years Landsat satellites have been acquiring images of the land cover of the planet. The satellites have given us spectacular views of mountains, valleys, coastal areas, islands, volcanic fields, forests, and patterns on the landscape.

By highlighting some of those features and creatively crafting the colors we have developed a series of "Earth as Art" perspectives that reveal the artistic side of Landsat. The Top 5 "Earth as Art" images will be announced on July 23 in Washington, D.C., at a special event commemorating the launch of the first Landsat satellite.

The poll closes July 6. Select the Best "EARTH AS ART" Images.