Iapetus - Black on white or white on black? |
Iapetus - Black on white or white on black? |
Sep 14 2007, 07:40 AM
Post
#1
|
|
Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
Seems to be a lot of dispute on this subject... I think it's ice from the interior, but what does everyone else think?
Edit: This world seems very complex so the question could perhaps be phrased as 'which of these options is most responsible for the Iapetan dichotomy?' |
|
|
Sep 15 2007, 04:26 PM
Post
#2
|
|
Member Group: Members Posts: 241 Joined: 16-May 06 From: Geneva, Switzerland Member No.: 773 |
It was not a good idea to go to vacation far from my computer this week. The whole week-end will not be enougth to look at all the Iapetus flyby stuff !!!
After watching some of the pictures, I have the feeling that craters in Roncevaux are very smooth, like on Enceladus. So is this region covered by a kind of snow ? (Ejected by the Claude impact event which seems to have occured quite recently ?). On Rhea, craters look sharper. Moreover, as already mentioned, in some pictures white seems to cover black and in other pictures black seems to cover white. So even if I always thought that the Black was on the White, now I'm not sure about it anymore. Iapetus might still have a certain kind of surface activity (like on Callisto?) and both black and white stuffs migth be transported from one location to the other. Data from the other instruments (VIMS, CIRS,...) might help to solve the problem. Does someone know when they will be available ? Marc. |
|
|
Lo-Fi Version | Time is now: 23rd September 2024 - 04:57 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |