At the Europa Focus Group meeting there was a talk scheduled entitled
"Simulations of europan ices at JPL's Extraterrestrial Materials Simulation
Laboratory" by Jacklyn Green. The talk wasn't given; I never heard why.
But I presume JPL, at least, is working on it. I'm sure they'd like some
more probe data to help constrain their models, like everybody else.
On the sulfur content question, my understanding is that the chondritic
material believed to have formed Europa would have brought in abundant
sulfur. Europa would have lots of sulfur for the same reason Io does - the
initial building materials for both were similar. No doubt some surface
contamination of Europa would also occur due to Io's volcanism, but the
seabeds of elemental sulfur and the sulfuric acid ocean would be Europa's
"fault," not her sister's. My answer is based primarily on Jeff Kargel's
models, but since I very well could have misunderstood them, you can check
them out yourself. See Kargel et al. 2000. Icarus 248:226.
Dan Zeigler
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Robert Crawley
Sent: Tuesday, February 27, 2001 1:38 PM
To: [EMAIL PROTECTED]
Subject: RE: Europa submersible hypothetical
It does seem like a good idea to try and recreate a Europan surface here on
earth with assumed temperatures and composition. Is anyone trying to do
this? Also, is it anywhere near feasible that the sulfuric content of
Europa is derived from Io's hyperactivity? If so, then that might lead one
to the conclusion that the majority of Europa's sulfuric content is on its
surface only.
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