# Surface brightness variations seen by VIRTIS on Venus Express and implications for the evolution of the Lada Terra region, Venus

6 Pôle Planétologie du LESIA
LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
Abstract : Venus Express is since April 11, 2006 in orbit around Venus. VIRTIS (Visible and Infrared Thermal Imaging Spectrometer) has started only hours after orbit insertion to collect an immense and unique data set. Of special interest is the wavelength range from 1-1.5 microns which includes the atmospheric windows''. By averaging several hundred multi-spectral images obtained during the mission we have been able to map the surface temperatures for almost the whole southern hemisphere of Venus. Blurring in the clouds limits the spatial resolution to approximately 100 km globally. The most exciting and at the same time the most complex task is to retrieve compositional information for the surface of Venus from the hyperspectral data obtained by VIRTIS. We report here about indication for variations in the surface composition in the Lada Terra region based on brightness variations mapped from VIRTIS measurements and present some tentative links to the evolution of this region.
Document type :
Journal articles
Domain :

https://hal.archives-ouvertes.fr/hal-03742627
Contributor : Florence Henry Connect in order to contact the contributor
Submitted on : Friday, August 19, 2022 - 8:09:16 AM
Last modification on : Friday, August 19, 2022 - 8:09:18 AM

### File

Geophysical Research Letters -...
Publisher files allowed on an open archive

### Citation

Jörn Helbert, Nils Muller, Petri Kostama, Lucia Marinangeli, Giuseppe Piccioni, et al.. Surface brightness variations seen by VIRTIS on Venus Express and implications for the evolution of the Lada Terra region, Venus. Geophysical Research Letters, American Geophysical Union, 2008, 35, pp.11201. ⟨10.1029/2008GL033609⟩. ⟨hal-03742627⟩

Record views