Enceladus Plume Search, Nov. 27 |
Enceladus Plume Search, Nov. 27 |
Nov 24 2005, 04:01 PM
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#1
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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 14 2005, 06:12 PM
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#2
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Member Group: Members Posts: 688 Joined: 20-April 05 From: Sweden Member No.: 273 |
Note the darker "cores" to the high albedo spikes at about longitude 60 and 210. They suggest that either there relatively fewer particles with low velocities or that the low-velocity particles have a different composition.
tty |
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Dec 14 2005, 09:37 PM
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#3
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (tty @ Dec 14 2005, 06:12 PM) Note the darker "cores" to the high albedo spikes at about longitude 60 and 210. They suggest that either there relatively fewer particles with low velocities or that the low-velocity particles have a different composition. tty I have impression that albedo is rather related to particles origin: the central/polar tiger stripe (blue color code) generate darker material compared to the other two... ones Anyway, amazing work, jmknapp! -------------------- I always think before posting! - Marco -
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Dec 14 2005, 11:35 PM
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#4
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
QUOTE (dilo @ Dec 14 2005, 05:37 PM) I have impression that albedo is rather related to particles origin: the central/polar tiger stripe (blue color code) generate darker material compared to the other two... ones Another possibility: maybe the central stripe isn't as active, or not active along its entire length? The sim assumed that each stripe was active across its length. Nice to see Voyager data come in so handy! Hendrik: BTW, what is arxiv? Does one need academic/institutional affiliation to submit a paper? -------------------- |
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Dec 15 2005, 02:49 PM
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#5
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
jmknapp: Seriously, you should think about writing a (short) paper on your sim. I don't know if others did similar simulations, but the results are intriguing. Perhaps with a little bit of playing around with distributions of venting locations you could make an even better fit to the albedo map. The paper doesn't have to be a hundred pages long, a few pages might do, describing your reasoning, steps and discussing your tentative results a bit.
Someone's bound to do this anyway and you might feel bad when they take the credit for it. -------------------- |
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Dec 15 2005, 04:40 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
QUOTE (ugordan @ Dec 15 2005, 06:49 AM) jmknapp: Seriously, you should think about writing a (short) paper on your sim. I don't know if others did similar simulations, but the results are intriguing. Perhaps with a little bit of playing around with distributions of venting locations you could make an even better fit to the albedo map. The paper doesn't have to be a hundred pages long, a few pages might do, describing your reasoning, steps and discussing your tentative results a bit. Someone's bound to do this anyway and you might feel bad when they take the credit for it. If Joe is interested in that, the Lunar and Planetary Science Conference would be a good way to go. They publish two-page "abstracts," and their deadline is January 3. --However, if he does want to publish anything, of course, that is really "doing science" which means he would have to strictly avoid even giving the impression that he has looked at any Cassini Enceladus data that has not been delivered to the PDS. That would be a no-no at this point! I think the early Enceladus data should be part of the next PDS release, right? And I hear there is a publication coming up, perhaps in Science, perhaps in January, which should free other scientists' tounges a bit... --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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