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Tiger Stripes and Cassini ISS High-Resolution Imaging of Enceladus

Helfenstein, Paul and Denk, T. and Giese, B. and McEwen, A.S. and Neukum, G. and Perry, J. and Porco, C.C. and Thomas, P.C. and Turtle, E. and Verbiscer, A. and Veverka, J. (2008) Tiger Stripes and Cassini ISS High-Resolution Imaging of Enceladus. In: Bulletin of the American Astronomical Society, 40 (3), p. 399. 40. Annual Meeting of the ASS Division for Planetary Sciences, 2008-10-11 - 2008-10-15, Ithaca, NY (USA).

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Abstract

Deciphering the mechanisms of Enceladus’ plumes is one of the most important and challenging tasks for planetary science. Cassini has provided a wealth of data by remote and in-situ data collection, but fundamental details of the vents and their context remain elusive. Three flybys of Enceladus by Cassini in 2008, on August 11 (altitude: 50km), October 9 (30km), and October 31 (200 km) are designed to further our knowledge of Enceladus’ geology and geophysics. Anticipated data include images as good as 7 m/pixel of parts of the geologically active South Polar Terrain (SPT). We targeted six different known eruption sites (Spitale and Porco 2007, Nature 449, 695-697) along Cairo Sulcus, Baghdad Suclus, and Damascus Sulcus, as well as non-active portions of the the "tiger stripes" and bright grooved terrain in between. On each of the three flybys we also plan contiguous ISS broadband multi-spectral mosaics of the entire SPT region so that we can search for volcanically and tectonically driven temporal changes and construct detailed digital terrain maps. Previous images of the tiger stripes and other rift systems on Enceladus resolve geomorphic structures on hundred meter scales or larger. Within those resolution limits, tiger stripes are morphologically distinguished most strongly from comparably sized young looking rifts elsewhere on Enceladus by their prominent upturned flanks, the muted appearance of their surface relief, and their relative absence of distinct cliff faces, probably of solid ice along scarps. The anticipated new high-resolution images will provide critical structural details needed to identify the extent to which unique attributes of tiger stripes are caused by mantling by plume fallout, tectonic deformation, seismic disruption, or perhaps thermal processes. Here, we present a first analysis of the August 11 close flyby images.

Item URL in elib:https://elib.dlr.de/56557/
Document Type:Conference or Workshop Item (Speech)
Title:Tiger Stripes and Cassini ISS High-Resolution Imaging of Enceladus
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Helfenstein, PaulCornell University, Ithaca, NYUNSPECIFIED
Denk, T.Freie Universität BerlinUNSPECIFIED
Giese, B.UNSPECIFIEDUNSPECIFIED
McEwen, A.S.University of Arizona, Tucson, AZUNSPECIFIED
Neukum, G.Freie Universität BerlinUNSPECIFIED
Perry, J.University of Arizona, Tucson, AZUNSPECIFIED
Porco, C.C.Space Science Institute, Boulder, COUNSPECIFIED
Thomas, P.C.Cornell University, Ithaca, NYUNSPECIFIED
Turtle, E.Applied Physics Laboratory, Laurel, MLUNSPECIFIED
Verbiscer, A.University of Virginia, VAUNSPECIFIED
Veverka, J.Cornell University, Ithaca, NYUNSPECIFIED
Date:2008
Journal or Publication Title:Bulletin of the American Astronomical Society
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:40
Page Range:p. 399
Series Name:AAS
Status:Published
Keywords:Enceladus, Saturn satellites, Imaging
Event Title:40. Annual Meeting of the ASS Division for Planetary Sciences
Event Location:Ithaca, NY (USA)
Event Type:international Conference
Event Dates:2008-10-11 - 2008-10-15
Organizer:American Astronomical Society
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: Giese, Dr.rer.nat. Bernd
Deposited On:15 Dec 2008
Last Modified:27 Apr 2009 15:34

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