Over the Antarctic was discovered the spiral structure

This true color image taken by NASA's Cassini probe, on June 27 this year, Cassini flew over Titan near the photographs displayed on over Titan's south polar regionvortex structure

Titan over the Antarctic upper vortex structure is formed on a false color image of NASA's Cassini probe shooting

Titan over the Antarctic upper vortex structure is formed on a false color image of NASA's Cassini probe shootingAccording to the U.S. Space Network reported that NASA is Saturn orbit, Cassini spacecraft of Saturn's largest satellite Titan over the Antarctic was observed atmospheric vortex structure, which may indicate that the southern hemisphere of the satellite is being ushered in the winter . June 27, when its close flyby of Titan, the camera equipment on board the Cassini shot under the spiral structure. The observations show that the structure of the vortex rotation period of about 9 hours, Titan's rotation period is about 16 days., Cassini project scientist at NASA's Goddard Institute for Space Research, Tony Dell - Jianei Luo (Tony Del Genio) said: "this whirlpool within the structure is very similar over the ocean on Earth the common open type cellular convection structure, but the situation here and the Earth, on Earth, such a spiral structure usually occurs in the near-surface, Titan, the vortex structure where the height is very high. This may be a Titan the response of the stratosphere on seasonal changes, which may indicate that Titan's southern hemisphere winter is approaching. but so far we can not determine this. "When Cassini arrived in the Saturn system in 2004, when it was discovered Titan - this diameter of Saturn's largest satellite of 5150 km above the Arctic exists a suspected the vortex structure. Then Titan northern hemisphere winter, this winter has been extended to August 2009, when Saturn mark the vernal equinox, this moment marks the Saturn hemisphere spring and the beginning of the southern hemisphere autumn, a time of many of Saturn's moons season .Despite the Titan's Arctic suspected spiral structure still exists, however, its upper atmosphere is warmer Arctic toward is constantly cooling Antarctic mobile. This process will result in Titan's south polar region over the air flow goes down, at the same time also the formation of haze at high altitudes and the spiral structure.Cassini's cameras originally in March began to notice the Titan over the Antarctic vortex, followed by spacecraft equipped with visible and infrared mapping spectrometer (VIMS) were taken in May 22 and June 7 false color image of the spiral structure. The Christopher Suoting (Christophe Sotin) Cassini VIMS equipment group of scientists from NASA's Jet Propulsion Laboratory (JPL), he said: "VIMS observed in Titan over the Antarctic about 200 miles (321 km) at a large number of air-suspended material gathered. Prior to this we have never observed in this highly gas suspended solids, so we know that this is a new phenomenon. "Cassini project scientists will continue to be closely monitored by Titan's south polar region, observed here for the next stage of development, these information will help people understand the complex satellite-based methane in the climate system. Bob West (Bob West), deputy head of the Cassini Imaging Science Group, from the Jet Propulsion Laboratory, he said: "The future continuous observation of this phenomenon will examine Titan atmospheric circulation, chemical characteristics of clouds and atmospheric suspended solids model is correct to provide a good validation opportunities in the solar system, the atmosphere of the polar regions over the whirlpool is not a rare phenomenon. We observed a similar phenomenon before, Saturn, Jupiter, Neptune, Earth and Venus have.