Tuesday, February 23, 2016
4:00 pm
South Mudd 365

Planetary Science Seminar

Enceladus: The Hottest Little Moon in the Solar System
Andy Ingersoll, Professor, Planetary Sciences, Caltech
 The plumes of Enceladus are the keys to liquid water, 
 habitability, and orbital evolution, but the data are incomplete and the 
 interpretation is uncertain. I will first review the principal results 
 from the past 11 years of Cassini observation - the mass rate and 
 composition of the vapor, the mass rate and composition of the solid 
 particles, the temperatures close to the vents, the total power, and the 
 partitioning between radiated power and power escaping as latent heat of 
 the vapor. I will then discuss papers that I have been involved with 
 during the past year, with co-authors Shawn Ewald, Miki Nakajima, Peter 
 Gao, Pushkar Kopparla, and Xi Zhang. Our results are relevant to the 
 width and depth of the cracks, their periodic opening and closing, and 
 why they don't seal themselves off with frost deposits near the upper 
 surface. I will close with a list of projects and an appeal for help.
Contact Chris Spalding cspaldin@caltech.edu
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