Europa PR, A couple of new posts to the Photojournal |
Europa PR, A couple of new posts to the Photojournal |
 Dec 20 2007, 09:26 PM
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 Senior Member  Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321  |
Thick or Thin Ice Shell on Europa?
http://photojournal.jpl.nasa.gov/catalog/PIA10131 Europa Tide Movie http://photojournal.jpl.nasa.gov/catalog/PIA10149 I'm not sure that there is any new science involved. Seems to me like some nice eye candy for the purpose of getting Europa into the collective consciousness before the next flagship is chosen. |
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Nov 18 2011, 02:55 AM
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#2
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Member Group: Members Posts: 318 Joined: 1-October 06 Member No.: 1206 |
Okay, I have a question (it may be dealt with in the paper, I don't know)
I assume this mechanism can explain the dark staining of the chaos regions, but what about the dark staining of many of the long cycloid cracks? Doesn't this assume that there HAS been a connection between the (presumably) deep ocean and the surface at some stage in the fairly recent geological past? One that doesn't need the upwelling mantle plume/subsurface lake mechanism to communicate with the surface? Could there be regions of deep AND shallow ice? Can Jupiter's tides crack those errr cracks all the way to their ocean bases, or is there another mechanism that could bring those stains (are they tholins?) to the surface? P |
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JRehling Europa PR Dec 20 2007, 09:26 PM
volcanopele Bah, blatent Europan propaganda It's all r... Dec 20 2007, 09:58 PM
nprev QUOTE (volcanopele @ Dec 20 2007, 01:58 P... Dec 20 2007, 10:17 PM
Mariner9 QUOTE (volcanopele @ Dec 20 2007, 01:58 P... Dec 21 2007, 09:23 PM Decepticon Excellent!
Thin all the way baby! Dec 20 2007, 10:08 PM ugordan QUOTE (Decepticon @ Dec 20 2007, 11:08 PM... Dec 20 2007, 10:10 PM dvandorn Io is just a whole order of magnitude more difficu... Dec 21 2007, 09:46 PM Mariner9 QUOTE (dvandorn @ Dec 21 2007, 01:46 PM) ... Dec 22 2007, 02:45 AM vjkane QUOTE (Mariner9 @ Dec 22 2007, 02:45 AM) ... Dec 22 2007, 04:54 PM volcanopele No you just have a Jupiter orbiter make repeated f... Dec 21 2007, 09:55 PM nprev ...VP, you stick to your guns no matter what!... Dec 21 2007, 10:03 PM JRehling Incidentally, I think on the first one, they got t... Dec 21 2007, 11:12 PM vexgizmo QUOTE (JRehling @ Dec 21 2007, 05:12 PM) ... Feb 10 2008, 04:45 PM JRehling QUOTE (vexgizmo @ Feb 10 2008, 08:45 AM) ... Feb 11 2008, 06:34 PM Mariner9 vjkane - Well stated, and I don't disagree wit... Dec 23 2007, 12:00 AM vjkane QUOTE (Mariner9 @ Dec 23 2007, 12:00 AM) ... Dec 23 2007, 03:23 AM DrShank sorry to disappoint you thin-skinned, er i mean th... Jan 11 2008, 03:33 AM Greg Hullender Any thoughts as to what the minimum thickness migh... Jan 11 2008, 04:09 AM rlorenz QUOTE (Greg Hullender @ Jan 10 2008, 11:0... Jan 11 2008, 03:57 PM JRehling Ice will not sustain major deviations in thickness... Jan 12 2008, 07:57 AM belleraphon1 NASA Hosting Science Update about Jupiter's Ic... Nov 15 2011, 09:45 PM antipode Lets see, no current assets in Jupiter space, so t... Nov 16 2011, 03:51 AM nprev I'm not reading this as a brief on new results... Nov 16 2011, 05:06 AM DrShank Getting at the ice shell thickness has been a real... Nov 16 2011, 06:16 PM belleraphon1 Really is a conundrum... to me. I just wonder how ... Nov 16 2011, 06:37 PM DrShank agreed. the new model and even the diapir model r... Nov 16 2011, 06:51 PM belleraphon1 So we are still talking plumes of warm ice... even... Nov 16 2011, 06:58 PM DrShank its a difficult concept even for me, but the risin... Nov 16 2011, 07:02 PM belleraphon1 Interesting. And I guess there are chemical condis... Nov 16 2011, 07:13 PM Paolo for the lucky few having access to Nature, the pap... Nov 16 2011, 07:14 PM ngunn QUOTE (Paolo @ Nov 16 2011, 07:14 PM) the... Nov 16 2011, 07:49 PM stevesliva Again reminds me of sandstone over salt domes. Th... Nov 16 2011, 08:31 PM stevesliva Article at NASA here links to larger versions of t... Nov 17 2011, 01:22 AM elakdawalla They don't mention cycloids at all in the pape... Nov 18 2011, 02:57 AM Juramike (Don't think they are tholins, more likely sal... Nov 18 2011, 02:58 AM antipode QUOTE (Juramike @ Nov 18 2011, 01:28 PM) ... Nov 18 2011, 04:00 AM Juramike QUOTE (antipode @ Nov 17 2011, 11:00 PM) ... Nov 18 2011, 12:03 PM Explorer1 Just a quick related question; how much do we know... Nov 18 2011, 07:05 AM Gsnorgathon QUOTE (Explorer1 @ Nov 17 2011, 11:05 PM)... Nov 18 2011, 03:26 PM eoincampbell QUOTE (Gsnorgathon @ Nov 18 2011, 08:26 A... Nov 18 2011, 03:38 PM Phil Stooke "But how are the purported "shallow lake... Nov 18 2011, 03:46 PM Floyd The Nature article is quite nice (I'm one of t... Nov 29 2011, 10:16 PM Phil Stooke There is nothing comparable on Enceladus. Totally... Nov 29 2011, 11:06 PM MarcF Some new stuff from Europa:
"Based on new dat... Mar 9 2013, 04:02 PM stevesliva http://www.mikebrownsplanets.com/2013/03/s...alt-p... Mar 9 2013, 04:56 PM MarcF Really nice explanations from Mike Brown !
BTW... Mar 9 2013, 06:54 PM MarcF I just heard about the Europa Clipper mission:
htt... Mar 13 2013, 09:52 PM MarcF Where are the Best Windows Into Europa's Inter... May 9 2013, 10:44 AM |
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