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Grooved bands on Enceladus: morphology and implications.

Giese, B. and Neukum, G. and Helfenstein, P. (2009) Grooved bands on Enceladus: morphology and implications. Icy Satellites of the Saturnian System, 29 June - 30 June 2009, London, UK.

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Official URL: http://www.cps.ucl.ac.uk/meetings/icy/

Abstract

Enceladus has undergone substantial resurfacing during its evolution. Among other features indicative of resurfacing there are 10-15 km wide grooved bands, as Cassini images show (Fig. 1a). Here, we report on pinch and swell topography across one of the bands (Fig. 1b) and similarities to the morphology of grooved bands on Ganymede. Grooved bands on Ganymede were suggested to have formed by an extensional necking instability [1], and we suggest that it has also been involved in the formation of grooved bands on Enceladus. Extensional necking on Enceladus implies high surface thermal gradients [2] and would be consistent with high heat flows previously derived in this area [3]. From the wavelength of topography (~ 5 km) the theory predicts brittle layer thicknesses of ~ 1.4 km, which matches the lithospheric thickness derived from flexure studies nearby the band [3].

Document Type:Conference or Workshop Item (Paper)
Title:Grooved bands on Enceladus: morphology and implications.
Authors:
AuthorsInstitution or Email of Authors
Giese, B.bernd.giese@dlr.de
Neukum, G.gneukum@zedat.fu-berlin.de
Helfenstein, P.paulhelf@twcny.rr.com
Date:2009
Refereed publication:No
In ISI Web of Science:No
Status:Published
Keywords:Enceladus, topography, bands
Event Title:Icy Satellites of the Saturnian System
Event Location:London, UK
Event Type:Workshop
Event Dates:29 June - 30 June 2009
Organizer:NASA, ESA
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 > Planetary Geodesy
Deposited By: Dr.rer.nat. Bernd Giese
Deposited On:28 Aug 2009 09:05
Last Modified:12 Dec 2013 20:40

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