NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Non-Newtonian Convection and Compositional Buoyancy: Advances in Modeling Convection and Dome Formation on EuropaNumerical modeling of non-Newtonian convection in ice shows that convection controlled by grain boundary sliding rheology may occur in Europa. This modeling confirms that thermal convection alone cannot produce significant dome elevations. Domes may instead be produced by diapirs initiated by thermal convection that in turn induces compositional segregation. Exclusion of impurities from warm upwellings would allow sufficient buoyancy for icy plumes to account for the observed approximately 100 m topography of domes, provided the ice shell has a small effective elastic thickness (approximately 0.2 to 0.5 km) and contains low eutectic-point impurities at the few percent level.
Document ID
20040055881
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Pappalardo, R. T.
(Colorado Univ. Boulder, CO, United States)
Barr, A. C.
(Colorado Univ. Boulder, CO, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Icy Worlds: Moving and Grooving
Subject Category
Lunar And Planetary Science And Exploration
Funding Number(s)
CONTRACT_GRANT: NCC2-1340
CONTRACT_GRANT: NGT5-50337
Distribution Limits
Public
Copyright
Public Use Permitted.
Document Inquiry

Available Downloads

There are no available downloads for this record.
No Preview Available