Image Envision Home     Stock Images     Download Media     Cart     FAQs    
All     3d     Clipart     Illustrations     Historical     Objects     Photochromes     Photomontages     Photos  
TERMS OF USE: This free image can only be used for non-commercial, personal website use only. THIS IMAGE CANNOT BE used in galleries, downloaded to your computer, posted on sites for others to use, manipulated, downsized, or upsized. If you are confused about the terms of use or have any questions then contact us before using the image.

Free Picture: Longest Channel on Venus


Free Picture of Longest Channel on Venus

Image URL  
E-Mail  
Forum BB  
HTML  
MySpace  

Description
This compressed resolution radar mosaic from Magellan at 49 degrees north latitude, 165 degrees east longitude with dimensions of 460 by 460 kilometers (285 by 285 miles), shows a 600 kilometers (360 mile segment of the longest channel discovered on Venus to date. The channel is approximately 1.8 kilometers (1.1 miles) wide. At more than 7,000 kilometers (4,200 miles) long, it is several hundred kilometers longer than the Nile River, Earth's longest river, thus making it the longest known channel in the solar system. Both ends of the channel are obscured, however, so its original length is unknown. The channel was initially discovered by the Soviet Venera 15-16 orbiters which, in spite of their one kilometer resolution, detected more than 1,000 kilometers (620 miles) of the channel. These channel-like features are common on the plains of Venus. In some places they appear to have been formed by lava which may have melted or thermally eroded a path over the plains' surface. Most are 1 to 3 kilometers (0.6 to 2 miles) wide. They resemble terrestrial meandering rivers in some aspects, with meanders, cutoff bows and abandoned channel segments. However, Venus channels are not as tightly sinuous as terrestrial rivers. Most are partly buried by younger lava plains, making their sources difficult to identify. A few have vast radar-dark plains units associated with them, suggesting large flow volumes. These channels, with large deposits appear to be older than other channel types, as they are crossed by fractures and wrinkle ridges, and are often buried by other volcanic materials. In addition, they appear to run both upslope and downslope, suggesting that the plains were warped by regional tectonism after channel formation. Resolution of the Magellan data is about 120 meters (400 feet).

Keywords
astronomy, channel, channel on venus, jpl, longest channel on venus, venus, nasa,  free photography,  free photo,  free photos,  free picture,  free pictures,  free image,  free images

Similar Free nasa Pictures
Lake Carnegie
Astronaut Neil Alden Armstrong
Astronaut Tracy Ellen Caldwell
Astronaut John Elmer Blaha
Astronaut Douglas Harry Wheelock
Astronaut Steven Wayne Lindsey
Astronaut Laurel Blair Salton Clark
Astronaut Carlos Ismael Noriega
Astronaut Paul Lockhart
Astronaut Kenneth Duane Bowersox
Astronaut Barbara Radding Morgan
Cosmonaut Valery Victorovich Ryumin
More...

Privacy       Contact       About       Image Collections       Artist Login
Copyright © 2005-2013 Image Envision LLC   All Rights Reserved       Additional resources: Clipart, Logos