Statistics – Applications
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.p51a0910o&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #P51A-0910
Statistics
Applications
5420 Impact Phenomena, Cratering (6022, 8136), 5422 Ices, 6020 Ices
Scientific paper
Recent missions to comet 9P/Tempel 1 and other icy bodies in the outer solar system, in addition to ongoing debates over the significance of water in crater formation on Mars, have focused attention on impact processes on icy and ice-silicate bodies. Despite the varying effects of porosity, strength, composition, and target structure on impact processes on these diverse planetary bodies, ice-rich objects are often grouped together because of our limited understanding of cratering processes in ice. We have validated the new Pactech/SAIC water equation of state by calling the EOS directly, as well as by using a tabular version, in the continuous adaptive mesh Eulerian hydrocode RAGE (jointly developed by SAIC and LANL; Clover and Gittings 2002). The Pactech/SAIC water EOS incorporates six ice phases in the tested pressure range (0 to 1000 GPa), the liquid phase, and the gas phase. Pactech/SAIC water EOS phase boundaries correspond very well to empirical phase boundary data, including all triple points and a Maxwell construction for the vapor dome. We have used the validated Pactech/SAIC water EOS in two-dimensional RAGE simulations of vertical impacts of ice, nylon, and metal projectiles into ice targets. We also have varied target properties such as strength and porosity to explore the effects of material properties on crater morphologies. We have compared simulations with results from low-velocity (Kato et al. 1995) and hypervelocity (Burchell and Johnson 2005) impact experiments into water ice, as part of this broad-scale validation and verification of RAGE for diverse planetary applications including impacts on Mars and Europa.
Asphaug Erik
Gisler Galen
Gittings Michael
Ong Lawrence
Weaver Richard
No associations
LandOfFree
Numerical Simulations of Impacts Into Icy Targets Using the Pactech/SAIC Equation of State for Water does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Numerical Simulations of Impacts Into Icy Targets Using the Pactech/SAIC Equation of State for Water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Numerical Simulations of Impacts Into Icy Targets Using the Pactech/SAIC Equation of State for Water will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-750589