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Water ice crystallinity and grain sizes on Dione

Newman, Sarah F. and Buratti, B.J. and Brown, R.H. and Jaumann, R. and Bauer, J. and Momary, T. (2009) Water ice crystallinity and grain sizes on Dione. Icarus: International Journal of Solar System Studies, 203 (2), pp. 553-559. Elsevier. DOI: 10.1016/j.icarus.2009.04.034

Full text not available from this repository.

Abstract

Saturn’s satellite Dione is becoming an increasingly important object in the outer Solar System, as evidence for its current activity accumulates. Infrared observations of the surface can provide clues to the history of the body and currently active processes. Using data from the Cassini Visual and Infrared Mapping Spectrometer (VIMS), we perform three sets of analyses that are sensitive to the ice state, temperature, thermal history, grain size and composition of surface ice. These are calculation of a “crystallinity factor”, spectral ratios and water ice band depths. In our analysis, we focus on the dichotomy between the wispy and dark terrain on Dione’s trailing hemisphere, to better understand the source of the different materials and their current properties. Our results suggest two different scenarios: (1) the ice from the wispy region has a higher crystallinity and water ice content than the dark region or (2) the wispy region contains larger grains. Both of these models imply recent geologic activity on Dione.

Item URL in elib:https://elib.dlr.de/61551/
Document Type:Article
Title:Water ice crystallinity and grain sizes on Dione
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Newman, Sarah F.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 183-501, Pasadena, CA 91109, USAUNSPECIFIED
Buratti, B.J.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 183-501, Pasadena, CA 91109, USAUNSPECIFIED
Brown, R.H.Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., P.O. Box 210092, Tucson, AZ 85721-0092, USAUNSPECIFIED
Jaumann, R.UNSPECIFIEDUNSPECIFIED
Bauer, J.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 183-501, Pasadena, CA 91109, USAUNSPECIFIED
Momary, T.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 183-501, Pasadena, CA 91109, USAUNSPECIFIED
Date:2009
Journal or Publication Title:Icarus: International Journal of Solar System Studies
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:203
DOI :10.1016/j.icarus.2009.04.034
Page Range:pp. 553-559
Publisher:Elsevier
Status:Published
Keywords:Geological processes; Ices; IR spectroscopy; Saturn, Satellites
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 09:52
Last Modified:26 Mar 2013 13:14

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