Search Publications
Interplanetary coronal mass ejection influence on high energy pick-up ions at Venus
Fedorov, A.; Luhmann, J. G.; Zhang, T. L. +4 more
We have used the ion mass analyzer (IMA) and magnetometer (MAG) on Venus Express (VEX) to study escaping O + during interplanetary coronal mass ejections (ICMEs). Data from 389 VEX orbits during 2006 and 2007 revealed 265 samples of high energy pick-up ion features in 197 separate orbits. Magnetometer data during the same time period sh…
Radiative transfer in the atmosphere of Venus and application to surface emissivity retrieval from VIRTIS/VEX measurements
Haus, Rainer; Arnold, Gabriele
The radiation measurements of VIRTIS-M-IR (1-5 µm) on Venus Express provide a valuable database for systematic studies of the atmosphere and surface of the Earth's sister planet. The present paper focuses on the investigation of physical parameters that determine the retrieval accuracy of deep atmosphere and surface features of Venus includi…
The Lada Terra rise and Quetzalpetlatl Corona: A region of long-lived mantle upwelling and recent volcanic activity on Venus
Head, James W.; Ivanov, Mikhail A.
Quetzalpetlatl Corona (∼850 km in diameter) and Boala Corona (∼350 km×250 km in diameter), are both situated within the Lada Terra rise, a prominent ∼2000-km-wide circular topographic feature rising ∼2.5-3 km above the mean planetary radius in the southern hemisphere of Venus, south of the Lavinia Planitia lowlands. Together these features form a …
NO emissions as observed by SPICAV during stellar occultations
Montmessin, Franck; Bertaux, Jean-Loup; Royer, Emilie
Ultraviolet (UV) nightglow data from the SPICAV instrument (SPectroscopy for the Investigation of the Characteristics of the Atmosphere of Venus) onboard the Venus Express spacecraft, currently in orbit around Venus, are presented. In its extended source mode, SPICAV has shown that the Venus nightglow in the UV contains essentially Lyman- α and Ni…
Two-dimensional time-dependent model of the transport of minor species in the Venus night side upper atmosphere
Gérard, Jean-Claude; Collet, Arnaud; Cox, Cédric
We present a numerical tool developed to quantify the role of processes controlling the spatio-temporal distribution of the NO ultraviolet and O2(Δg1) infrared nightglows in the Venus night side upper atmosphere, observed with the VIRTIS and SPICAV instruments on board Venus Express. This numerical tool consists in a two-dimensional che…
Winds, turbulence and waves in the clouds of Venus
Peralta, J.
The Ph.D. Thesis summarized in this abstract was accepted on 20 March 2009 at the University of the Basque Country (Spain) and awarded with the highest qualification. This work was advised by Drs. Agustín Sánchez-Lavega and Ricardo Hueso.