elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

The Venus Express VIRTIS and MESSENGER teams

Helbert, J. und Robinson, M. S. und Müller, N. und Prockter, L. M. und Head, J. W. und Izenberg, N. R. und Solomon, S. C. und Svedhem, H. und Piccioni, G. und Drossart, P. und MESSENGER Team, (2007) The Venus Express VIRTIS and MESSENGER teams. In: Eos Trans. AGU Fall Meet. Suppl., 88 (52), . American Geophysical Union (AGU), Fall Meeting 2007, 2007-12-10 - 2007-12-14, San Francisco, California (USA).

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

Because Venus Express has been in orbit around Venus since April 2006, MESSENGER's flyby of Venus on 5 June 2007 permitted a coordinated campaign of two-spacecraft observations of that planet. Here we report initial results from joint observations of the surface of Aphrodite Terra performed by the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) on Venus Express and the Mercury Dual Imaging System (MDIS) on MESSENGER. VIRTIS observed the region 13 hours before and 9 hours after the time of MESSENGER's closest approach (when Venus Express was on the opposite side of the planet). This timeline of nearly 24 hours allows the disentangling of variable atmospheric conditions from surface signals. Both instruments were able to observe the surface in the 1.02 μ m atmospheric window. At this wavelength the CO<sub>2</sub> atmosphere allows about 95% of the thermal radiation from the surface to escape. In addition VIRTIS could make observations in the atmospheric windows at 1.10 and 1.18 μ m, which are less transparent. Radiative transfer models were used to invert VIRTIS images at 1.02, 1.10, and 1.18 μ m for the thermal emission of the surface. Local atmospheric transmittance is derived from VIRTIS images at 1.31 μ m. The combined MDIS and VIRTIS data set covers almost the entire extent of southern Aphrodite Terra. Both instruments observed as expected a correlation between topography and thermal radiation, as the surface temperature on Venus is dominantly a function of altitude. There are, however, tentative indications of possible surface emissivity differences between highland material and the adjacent lowlands. Detailed data analysis and interpretation within the framework of the geology of the region are currently underway.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:The Venus Express VIRTIS and MESSENGER teams
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Helbert, J.NICHT SPEZIFIZIERT
Robinson, M. S.School of Earth and Space Exploration, Tempe, Arizona, USA
Müller, N.NICHT SPEZIFIZIERT
Prockter, L. M. The Johns Hopkins University Applied Physics Laboratory, Laurel, Maryland, USA
Head, J. W.Department of Geological Sciences, Brown University, Providence, Rhode Island, USA
Izenberg, N. R.Department of Geological Sciences, Brown University, Providence, Rhode Island, USA
Solomon, S. C.Department of Terrestrial Magnetism Carnegie Institution of Washington, Washington, DC, USA
Svedhem, H.ESA, Noordwijk, Netherlands
Piccioni, G.INAF - IASF Roma, Roma, Italy
Drossart, P.LESIA - Observatoire de Paris, Paris, France
MESSENGER Team, NICHT SPEZIFIZIERT
Datum:13 Dezember 2007
Erschienen in:Eos Trans. AGU Fall Meet. Suppl.
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:88
Seitenbereich:
Status:veröffentlicht
Stichwörter:Remote sensing, Surface materials and properties, Volcanism, Venus, VIRTIS, Venus Express, MDIS, MESSENGER
Veranstaltungstitel:American Geophysical Union (AGU), Fall Meeting 2007
Veranstaltungsort:San Francisco, California (USA)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2007-12-10 - 2007-12-14
Veranstalter :American Geophysical Union
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EW - Erforschung des Weltraums
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Venus Express (alt)
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetenphysik
Hinterlegt von: Stefanie Hempel
Hinterlegt am:15 Jan 2008
Letzte Änderung:27 Apr 2009 14:35

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.