Monster storm on Saturn |
Monster storm on Saturn |
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Nov 9 2006, 07:09 PM
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#1
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http://ciclops.org/view_event.php?id=57
A hurricane-like whirlpool with a well-developed eye ringed by towering clouds, a phenomenon never before seen on another planet, has been sighted by multiple Cassini instruments at Saturn's south pole. |
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Nov 9 2006, 11:14 PM
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#2
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Junior Member Group: Members Posts: 22 Joined: 26-March 05 Member No.: 219 |
Remarkable! Cassini has done it again. The large number of spotted white clouds adds additional splendor. Given its location at the South Pole, how would the planet's rotation affect the circular direction of the storm?
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Nov 14 2006, 12:56 AM
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#3
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Member Group: Members Posts: 154 Joined: 21-April 05 From: Rochester, New York, USA Member No.: 336 |
Some more interesting facts form the Ciclops site:
... winds blow at 550 kilometers (350 miles) per hour .... clouds tower 30 to 75 kilometers (20 to 45 miles) above those in the center ... is approximately 8,000 kilometers (5,000 miles) across |
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Nov 14 2006, 02:05 AM
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#4
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Definitely gives you a feel for just how deep the atmospheres of the Jovian planets really are...amazing. Does this appear to be a relatively permanent feature, like a whirlpool?
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Nov 14 2006, 10:09 AM
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#5
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
The Voyager data, when processed into polar stereographic or some such projection, revealed a hexagonal wave-belt/zone pattern at something like 82 or 85 deg north, surrounding the pole. There was a short paper on it, in Nature or perhaps Geophysical Research Letters or the like. Whether there was a more detailed and numeric study of the atmosphere dynamics of a stable periodic wave structure at that latitude, I don't know. I've been wondering if there was the same at the south pole.... uh... guess not!
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Nov 14 2006, 01:04 PM
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#6
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
A humorous writeup on Uncyclopedia.org about the hurricane on Saturn:
NASA chief Michael Griffin resigns over handling of Saturn hurricane -------------------- |
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Nov 14 2006, 03:11 PM
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#7
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
The Voyager data, when processed into polar stereographic or some such projection, revealed a hexagonal wave-belt/zone pattern at something like 82 or 85 deg north, surrounding the pole. There was a short paper on it, in Nature or perhaps Geophysical Research Letters or the like. Whether there was a more detailed and numeric study of the atmosphere dynamics of a stable periodic wave structure at that latitude, I don't know. I've been wondering if there was the same at the south pole.... uh... guess not! It's been known for some time (10 or even close to 15 years) from Hubble images that there is no hexagon near the south pole. This rendering (which BTW needs to be updated) I did a few years ago shows the northern hexagon fairly well. |
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Nov 16 2006, 06:52 PM
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#8
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Senior Member Group: Members Posts: 1628 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Remarkable! Cassini has done it again. The large number of spotted white clouds adds additional splendor. Given its location at the South Pole, how would the planet's rotation affect the circular direction of the storm? I wonder if the spotted clouds could be made of water? -------------------- Steve [ my home page and planetary maps page ]
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Dec 14 2006, 10:13 PM
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#9
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Member Group: Members Posts: 315 Joined: 1-October 06 Member No.: 1206 |
Next time we venture out to Saturn, how feasible would a direct entry probe into the south polar vortex be? I'm thinking something on a chute, or even a blimp, that could sense the environment over, and within, the vortex, and survive until a considerable crush depth. Think of the 'interior' images it could return of the eyewall dymanics if it was fairly longlived!
Okay - I can think of some pretty major challenges for a probe like this - especially getting data back to earth at reasonable bandwidth (polar orbiter?). However I'd like some experts/insiders to comment. Is the south polar vortex a potential realistic target of interest? The interest applies not just to Saturn, but to Venus, what happens under the polar dark hoods of Mars, and even to what we might one day find at the poles of Uranus and Neptune. P |
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Dec 15 2006, 11:05 AM
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#10
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
The vortex would be a *BAD* place to go for a probe trying to answer the big questions about deep atmospheric composition. Like the 'blue hot spot' on Jupiter that the Galileo probe accidentally descended into, the vortex is a down-welling zone of clear, dry air, equivalent to a high pressure airmass on earth's surface. The descending air has been "wrung out" of water and other condensible vapors and is not chemically representative of the deep interior, the way rising air coming up from great depth under a cloud deck would be.
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Dec 15 2006, 01:13 PM
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#11
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Member Group: Members Posts: 315 Joined: 1-October 06 Member No.: 1206 |
Good point. I had my 'pixel porn' goggles on. Seen too many videos of flights through *Earthly* Hurricane eyewalls I guess...
P |
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Oct 27 2007, 01:35 PM
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#12
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
To complement this release, here's what the south vortex looks like in approx. natural color, courtesy of the VIMS instrument:
The view was slightly sharpened to bring out features and magnified 4x. Click above image for a short flyover animation. -------------------- |
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Oct 27 2007, 11:05 PM
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#13
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Member Group: Members Posts: 599 Joined: 26-August 05 Member No.: 476 |
Good image. Ditto the animation. I am guessing the animation sequence was in chronological order. I imagine the effect may be a little more dramatic if the sequence were in reverse order.
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Jul 17 2008, 09:36 AM
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#14
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
There's a nice new narrow-angle set of the south polar vortex, including some RGB data. I tried to composite it to get an approx. natural color shot, despite the large contrast stretch applied to raw images. I based the color balance on the above VIMS view. I think the cloud ring visible in the NAC view is the innermost one in the VIMS view.
Click image to enlarge. The contrast is probably still a bit too high, but I didn't want to wash out all detail. -------------------- |
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Jul 17 2008, 09:45 AM
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#15
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Member Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655 |
Beautiful image - might this be a candidate for the end-of-mission plunge? (after the XXM and XXXM of course!)
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