sterhus wrote:hooch wrote:vaduz wrote:В кратере не так дует.
Про пылевых дьяволов (dust devils) слышали?
http://www.marstoday.com/viewpr.html?pid=5320
Что-то непонятно откуда там торнадо, там же атмосферы типа нет??
Как это нет? Есть, куда она денется.
Okazyvetsya deistvitelno est kakya-to:
Measurements made by the Viking landers established the exact composition of the Martian atmosphere as 95.3% carbon dioxide, 2.7% nitrogen, and 1.6% argon, with traces of oxygen (0.15%) and water vapor (0.03%). The average surface pressure is only about 7 millibars (less than 1% of the Earth's), though it varies greatly with altitude from about 9 millibars in the deepest basins to about 1 millibar at the top of Olympus Mons. This is still thick enough to support strong winds and enable occasional planet-wide dust storms to obscure the surface for months at a time. On the other hand, the Martian atmosphere results in only a weak greenhouse effect that raises the surface temperature by about 5°C. Consequently, most of Mars is well below the freezing point of water for most of the year. Moreover, even when the daytime temperature at low latitudes does climb significantly above freezing, the atmospheric pressure is so low that water ice turns directly into water vapor without first becoming liquid.
