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Photometric changes on Saturn's Titan: Evidence for active cryovolcanism

Nelson, Robert M. and Kamp, Lucas W. and Lopes, Rosaly M. C. and Matson, Dennis L. and Kirk, Randolph L. and Hapke, Bruce W. and Wall, Stephen D. and Boryta, Mark D. and Leader , Frank E. and Smythe, William d. and Mitchell, Karl L. and Baines, Kevin H. and Jaumann, Ralf and Sotin, Christophe and Clark, Roger N. and Cruikshank, Dale P. and Drossart, Pierre and Lunine, Jonathan I. and Combes , Michel and Bellucci, Giancarlo and Bibring , Jean-Pierre and Capaccioni, Fabrizio and Cerroni, Priscilla and Coradini, Angioletta and Formisano, Vittorio and Filacchione, Gianrico and Langevin, Yves and McCord, Thomas B. and Mennella, Vito and Nicholson, Phillip D. and Sicardy , Bruno and Irwin, Patrick G. and Pearl, John C. (2009) Photometric changes on Saturn's Titan: Evidence for active cryovolcanism. Geophysical Research Letters, 36, L04202. Wiley. doi: 10.1029/2008GL036206..

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Abstract

We report infrared spectrophotometric variability on the surface of Saturn's moon Titan detected in images returned by the Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini Saturn Orbiter. The changes were observed at 7°S, 138°W and occurred between October 27, 2005 and January 15, 2006. After that date the surface was unchanged until the most recent observation, March 18, 2006. We previously reported spectrophotometric variability at another location (26°S, 78°W). Cassini Synthetic Aperture RADAR (SAR) images find that the surface morphology at both locations is consistent with surface flows possibly resulting from cryovolcanic activity (Wall et al., companion paper, this issue). The VIMS-reported time variability and SAR morphology results suggest that Titan currently exhibits intermittent surface changes consistent with present ongoing surface processes. We suggest that these processes involve material from Titan's interior being extruded or effused and deposited on the surface, as might be expected from cryovolcanism.

Item URL in elib:https://elib.dlr.de/61570/
Document Type:Article
Title:Photometric changes on Saturn's Titan: Evidence for active cryovolcanism
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Nelson, Robert M.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Kamp, Lucas W.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Lopes, Rosaly M. C.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Matson, Dennis L.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Kirk, Randolph L.U.S. Geological Survey, Flagstaff, Arizona, USAUNSPECIFIED
Hapke, Bruce W.Department of Geology and Planetary Science, University of Pittsburgh, Pittsburgh, Pennsylvania, USAUNSPECIFIED
Wall, Stephen D.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Boryta, Mark D.Department of Earth Science and Astronomy, Mt. San Antonio College, Walnut, California, USAUNSPECIFIED
Leader , Frank E.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Smythe, William d.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Mitchell, Karl L.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Baines, Kevin H.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Jaumann, RalfUNSPECIFIEDUNSPECIFIED
Sotin, ChristopheJet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USAUNSPECIFIED
Clark, Roger N.U.S. Geolgocial Survey, Denver, Colorado, USAUNSPECIFIED
Cruikshank, Dale P.NASA Ames Research Center, Moffett Field, California, USAUNSPECIFIED
Drossart, PierreLESIA, Observatoire de Paris, Meudon, FranceUNSPECIFIED
Lunine, Jonathan I.Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona, USAUNSPECIFIED
Combes , MichelDepartment de Recherche Spatiale, Observatoire de Paris, Meudon, FranceUNSPECIFIED
Bellucci, GiancarloISFI, CNR, Rome, ItalyUNSPECIFIED
Bibring , Jean-PierreInstitut d'Astrophysique Spatiale, University of Paris Sud-Orsay, Orsay, FranceUNSPECIFIED
Capaccioni, FabrizioISFI, CNR, Rome, ItalyUNSPECIFIED
Cerroni, PriscillaISFI, CNR, Rome, ItalyUNSPECIFIED
Coradini, AngiolettaISFI, CNR, Rome, ItalyUNSPECIFIED
Formisano, VittorioISFI, CNR, Rome, ItalyUNSPECIFIED
Filacchione, GianricoISFI, CNR, Rome, ItalyUNSPECIFIED
Langevin, YvesInstitut d'Astrophysique Spatiale, University of Paris Sud-Orsay, Orsay, FranceUNSPECIFIED
McCord, Thomas B.Bear Fight Center, Space Science Institute, Winthrop, Washington, USAUNSPECIFIED
Mennella, VitoOsservatorio Astronomico di Capodimonte, Instituto Nazionale di Astrofisica, Naples, ItalyUNSPECIFIED
Nicholson, Phillip D.Astronomy Department, Cornell University, Ithaca, New York, USAUNSPECIFIED
Sicardy , BrunoLESIA, Observatoire de Paris, Meudon, FranceUNSPECIFIED
Irwin, Patrick G.Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, UKUNSPECIFIED
Pearl, John C.NASA Goddard Spaceflight Center, Greenbelt, Maryland, USAUNSPECIFIED
Date:2009
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:36
DOI :10.1029/2008GL036206.
Page Range:L04202
Publisher:Wiley
Status:Published
Keywords:Titan, Photometry, cryovolcanism
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 CASSINI (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Pieth, Susanne
Deposited On:09 Dec 2009 13:14
Last Modified:08 Mar 2018 18:28

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