Enceladus Plume Search, Nov. 27 |
Enceladus Plume Search, Nov. 27 |
Nov 24 2005, 04:01 PM
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
Interesting item in the science plan kernel (S16) just released to the NAIF website:
OBSERVATION_ID: S1629 SEQUENCE: S16 OBSERVATION_TITLE: Plume Search SCIENCE_OBJECTIVE: Hope to detect/observe plumes, whether from volcanic activity or geysers. OBS_DESCRIPTION: Point and stare. SUBSYSTEM: ISS PRIMARY_POINTING: ISS_NAC to Enceladus (0.0,5.0,0.0 deg. offset) REQUEST_ID: ISS_018EN_PLUMES001_PRIME REQUEST_TITLE: ENCELADUS Geyser/Plume Search REQ_DESCRIPTION: 1;ENCELADUS Geyser/Plume Search 1x1xNPp -- 3 different exposures BEGIN_TIME: 2005 NOV 27 19:00:00 UTC END_TIME: 2005 NOV 27 20:00:00 UTC -------------------- |
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Dec 1 2005, 04:09 PM
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Senior Member Group: Members Posts: 3008 Joined: 30-October 04 Member No.: 105 |
QUOTE (jmknapp @ Dec 1 2005, 08:40 AM) It's like ice has flowed from the rift and spread outward, complete with striations going out quite a way, reminiscent of the mid-atlantic ridge perhaps? That is my mental image of what is happening on Enceladus, too. But I'm not sure if there are rifts and speading centers a la a mid-ocean ridge, but rather a bouyant plume of ice/water that domes the surface, causing tension cracks, and the water vaporizes in the low surface pressure at various and variable openings in the fractures to create the plumes. On the few images of these stripes I've looked at I haven't seen much that impresses me as spreading centers, nor have I seen corresponding subduction zones. "YMMV" This is yet another odd world. --Bill -------------------- |
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