Lakes
Research, published in January 2010, suggests that Mars had lakes, each around 20 km wide, along parts of the equator, in the Oxia Palus quadrangle. Although earlier research showed that Mars had a warm and wet early history that has long since dried up, these lakes existed in the Hesperian Epoch, a much earlier period. Using detailed images from NASA's Mars Reconnaissance Orbiter, the researchers speculate that there may have been increased volcanic activity, meteorite impacts, or shifts in Mars' orbit during this period to warm Mars' atmosphere enough to melt the abundant ice present in the ground. Volcanoes would have released gases that thickened the atmosphere for a temporary period, trapping more sunlight and making it warm enough for liquid water to exist. In this new study, channels were discovered that connected lake basins near Ares Vallis. When one lake filled up, its waters overflowed the banks and carved the channels to a lower area where another lake formed. These lakes would be another place to look for evidence of present or past life.
Read more about this topic: Oxia Palus Quadrangle
Famous quotes containing the word lakes:
“The Indian navigator naturally distinguishes by a name those parts of a stream where he has encountered quick water and forks, and again, the lakes and smooth water where he can rest his weary arms, since those are the most interesting and more arable parts to him.”
—Henry David Thoreau (1817–1862)
“When you get out on one of those lakes in a canoe like this, you do not forget that you are completely at the mercy of the wind, and a fickle power it is. The playful waves may at any time become too rude for you in their sport, and play right over you.”
—Henry David Thoreau (1817–1862)
“This spirit it was which so early carried the French to the Great Lakes and the Mississippi on the north, and the Spaniard to the same river on the south. It was long before our frontiers reached their settlements in the West, and a voyageur or coureur de bois is still our conductor there.”
—Henry David Thoreau (1817–1862)