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Venus twirls ultra-high-altitude winds using gravitational waves

The researchers from the Institute of Cosmic Investigations of Russian Academy of Sciences together with colleagues from Italy have addressed the peculiarities of the dynamics of night atmosphere of Venus at altitudes of 90−110 km. It has been turned out that winds in this layer pass around the heights on the planet surface, although such event is not observed at lower altitudes. The extremely long-range impact of the terrain of the planet on ultra-high-altitude winds is realized most probably by stationary internal gravitational waves.
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The mechanism that underlies might be stationary internal gravitational waves (IGW) appearing in the course of passing around of mountains and other heights by the wind. The IGW should not be confused with cosmic gravitational waves of absolutely different nature: the world «gravitational» in the IGW notation means that the force of gravity is one of the factors causing their existence.

According to the observations, the dynamics of flows at the altitude of 90−110 km has appeared to be neither connected with super-rotation of lower layers of the atmosphere, nor with dynamics of upstream flows. The planetologists believe that further studies of the fields of luminescence of oxygen will help in getting more profound insights into the mechanisms causing an unusual behavior of wind in this atmospheric layer.

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