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Survey of 1-Hz waves in the near-Venusian space: Venus Express observations

Zhang, T. L.; Chen, Y. Q.; Wang, G. Q. +2 more

With 32 Hz magnetic field data of Venus Express from May 2006 to August 2012, the global spatial distributions of 1-Hz waves in the near-Venusian space are presented in this paper. The occurrence rate of 1-Hz waves is maximized near the Venusian bow shock and decreases in the upstream with the distance away from the shock. Downstream of Venusian b…

Improved calibrations of the stellar occultation data accumulated by the SPICAV UV onboard Venus Express

Montmessin, Franck; Bertaux, Jean-Loup; Korablev, Oleg +2 more

Stellar occultation is a powerful method to study vertical structure of the Venus night mesosphere. The UV channel of SPICAV spectrometer, operated in 2006-2014 on board ESA's Venus Express orbiter, allowed retrieval profiles of atmospheric gases (CO₂, SO₂, and O₃) and aerosols. It was also able to register differe…

The correlation length of ULF waves around Venus: VEX observations

Fränz, M.; Zhang, T. L.; Bolzan, M. J. A. +2 more

A study of the correlation length of ultra-low frequency (ULF) waves around Venus was developed using electron density and magnetic field data obtained from the Analyzer of Space Plasmas and Energetic Atoms (ASPERA-4) and magnetometer (MAG), respectively, on board of the mission Venus Express (VEX). The analysis was conducted using the whole inter…

Simple model of the wave pattern in the atmosphere of a slow rotating planet due to surface irregularities

Vigh, Carlos; Cirilo-Lombardo, Diego; Mayochi, Mariano +1 more

Recent observations show a persistent pattern on Venus surface, interpreted as a stationary wave due to the interaction of the prevailing winds with the orography of the planet. In this work we use an idealized model of the phenomenon that allows for a fully analytical solution applied to a slow rotating planet with idealized obstacles. We use Ven…