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

Helbert, J. and Müller, N. and Kostama, P. and Marinangeli, L. and Piccioni, G. and Drossart, P. (2008) Surface brightness variations seen by VIRTIS on Venus Express and implications for the evolution of the Lada Terra region, Venus. Geophysical Research Letters, 35 (11), L11201. American Geophysical Union. DOI: 10.1029/2008GL033609.

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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:Article
Title:Surface brightness variations seen by VIRTIS on Venus Express and implications for the evolution of the Lada Terra region, Venus
Authors:
AuthorsInstitution or Email of Authors
Helbert, J.UNSPECIFIED
Müller, N.UNSPECIFIED
Kostama, P.Astronomy Division, Department of Physical Sciences, University of Oulu, Oulu, Finland
Marinangeli, L.International Research School of Planetary Sciences, Università d'Annunzio, Pescara, Italy
Piccioni, G.INAF-IASF, Rome, Italy
Drossart, P.LESIA, Observatoire de Paris (CNRS-UMR 8109), Meudon, France
Date:June 2008
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:35
DOI:10.1029/2008GL033609
Page Range:L11201
Publisher:American Geophysical Union
Status:Published
Keywords:VIRTIS, Venus, atmosphere, cloud, spectra, Lada Terra
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Venus Express (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Deposited By: Stefanie Hempel
Deposited On:15 Dec 2008
Last Modified:27 Apr 2009 15:35

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