Why Is There a Hexagon Shaped Cloud on Saturn?

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    Cloud Hexagon Saturn
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Discussion Overview

The discussion centers around the hexagon-shaped cloud formation observed at Saturn's north pole, exploring potential causes and implications. Participants speculate on the underlying mechanisms, including fluid dynamics and the influence of Saturn's moons.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests that tidal forces from multiple moons, particularly those in orbital resonance, could explain the hexagonal shape, though they acknowledge this is speculative.
  • Another participant proposes that internal convection currents might be responsible, noting that the phenomenon affects only the lower clouds and may relate to Saturn's internal rotation rate.
  • A different viewpoint describes the hexagon as a harmonic sinusoidal wave, emphasizing its representation in polar coordinates and its relationship to the planet's circumference.
  • One participant posits that the hexagon could be another solution to the Navier-Stokes equations, indicating that fluid dynamics can lead to unusual patterns.
  • Another participant mentions that various geometric shapes can emerge in rotating fluids, suggesting that the hexagon may not be as unusual as it seems and could indicate a level of order in Saturn's atmospheric dynamics.

Areas of Agreement / Disagreement

Participants express differing hypotheses regarding the cause of the hexagonal cloud formation, with no consensus reached on a single explanation. Multiple competing views remain, reflecting the complexity of the phenomenon.

Contextual Notes

Some claims rely on assumptions about fluid dynamics and the behavior of atmospheric phenomena, and there are unresolved mathematical aspects related to the proposed models.

Who May Find This Useful

This discussion may be of interest to those studying planetary atmospheres, fluid dynamics, or anyone curious about the unique weather patterns on Saturn.

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Here's a picture of it

http://www.nasa.gov/mission_pages/cassini/multimedia/pia09188.html

I found this very striking and am surprised that there has been so little talk about it. My best guess is that it has something to do with tidal forces being exerted by multiple moons. I'm especially suspicious about moons that have orbital resonance. I'm just speculating though, and am very perplexed by the odd shaped weather formation.
 
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I'd be willing to bet it has something to do with internal convection currents since it's only affecting the lower clouds. One thing that would backup this possibility is how JPL mentions that it may be tied to Saturns true (internal) rotation rate.

JPL doesn't have much to say about it (not even a possible cause) but they do provide a nice gif animation. You can see how the upper/outer clouds are unaffected by it.
pia09187-200.gif


http://www.jpl.nasa.gov/news/news.cfm?release=2007-034
 
Old news. I saw this years ago.

I do believe this is a shot of the pole. That's the crux. The hexagon is better described (coincidentally enough) in polar coordinates. It is simply a harmonic sinusoidal wave - the wavelength is a whole multiple of the circumference.
 
It's probably just another solution to the Navier-Stokes equation. Fluid dynamics can produce very weird effects.
 
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Triangles, squares, pentagons... appear in rotating fluids, small and big which can be visible by inserting colors or dust. After learning that I could no longer decide is that big and unusual or ordinary occurrence on Saturn. Maybe it means that Saturn is not so chaotic. Here's one web link:
http://engineering.dartmouth.edu/~cushman/books/GFD.html

Try MATLAB files in cdrom package, chapter 10.
 
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