The new flyover maps show, for the first time, the 3-D topography and height of the 1,200-meter (4,000-foot) mountain tops, the north polar lake country, the vast dunes more than 100 meters (300 feet) high that crisscross the moon, and the thick flows that may have oozed from possible ice volcanoes.
The stereo coverage includes a large portion of Titan's north polar lakes of liquid ethane and methane.
When the rising warm vapor hits colder upper air closer to the pole, it forms thunderhead-style clouds and dumps its condensed methane in severe storms--directly over the polar lake
While Cassini has observed changes in south polar lakes
using both its Imaging Science Subsystem (ISS) cameras and its radar - including the disappearance of some small lakes - the exact reasons behind the changes remain unclear, says Hayes.
The technology could also be used to explore Earth's ice-bound polar lakes
, which hold clues to the origins of life on Earth.
Sunlight triggers the entry of poisonous mercury into polar lakes
, but it also removes most of the toxic compound before fish can consume it, a new study suggests.
However, there have since been few quantitative investigations of benthic bryophytes in polar lakes
. In July-August 2000, we had the opportunity to sample the benthic communities in Colour Lake, in the Canadian High Arctic (79[degrees]25' N, 90[degrees]45' W).
Titan exhibits a variety of features, such as giant equatorial sand dunes, polar lakes
, and methane-soaked mud flats.