6th March 2012 - 07:55 AM
New hypothesis proposed:
"It is Uranus that has the extreme tilt. It has something to do with the winds. In my theory (and I haven't thought too much about Uranus for a long time), these strong winds have made the planet rotate this way.
But what drives the winds? "
Next post: "But you check out my theory for a moment. Find out the cause for the wind, and when they started. If there has been this circulation from day 1 when the planet was forming there is no need for this impact. And remember it is a massive ball of liquid. Is anything going to changed it's rotation? I don't think so.
I think there is a reason the material forming this planet spun and had this angular momentum and that shows up in the tilt and the extreme winds circling the planet today. The winds make the oceans move which then makes the rocky core rotate the same way. Billions of years to make it happen. But it starts with the winds. "
The third post on the topic: "It was 15 years ago I thought the rotation of Uranus could be caused by accumulation of charged particles. I don't see any reason why these particles could not result in winds. Imagine if the solar wind particles are going slow enough at that distance to be accumulated by the gravitational attraction. The ionised particles reform in the atmosphere.
Ok I did read that the net wind circulation of the Earth has an effect on the speed of rotation of the Earth. OK it was fairly minimal but it was measured. Now that might have been 6 years ago so I'm not sure if it could be found again.
Now on the Earth and Venus the wind is powered, I believe, by the Sun so the energy source is external to the planet and depending on the density of the atmosphere and surface friction it would determine the speed of the wind and how much energy can be transferred.
The trees and mountains on Earth go along way to slowing the wind. If the wind wasn't slowed the circulation around the globe would intensify. For I believe the absorption of the incident radiation occurs to higher degree when the wind and radiation are moving in the same direction. (Conservation of energy and momentum preclude the opposite.)
Mercury has virtually no atmosphere so can't really be discussed, and what happens on Mars I don't know; I haven't looked it up.
Jupiter would be the real test case due to its enormous size. I'll get back on that."
and then: "The deeper winds on Jupiter are prograde (going in the same direction as planet is spinning).
Changes in the speed of the Galileo probe caused by zonal winds created a small but measurable Doppler effect in the probe relay carrier frequency. Analysis of the probe relay link frequency allows direct measurements of the speed of Jupiter's zonal winds beneath the cloud tops. The deep winds were prograde and strong, reaching a sustained 190 to 200 meters per second at an altitude marked by a pressure of 24 bars. The depth and strength of the zonal winds severely constrain dynamic modeling of the deeper layers and begin to rule out many shallow weather theories.
So if my analysis is correct this too is making the planet power-up. Considering Jupiter is the largest and fastest rotating planet, with a "surface" velocity of 45,300 km/hour it is surprising to think this might be getting faster!
So once again I'd say the winds affects the rotation of a planet. "
Lastly: "Earth has comparatively little atmosphere compared to Jupiter so the windage effect is always going to be minimal, but with global warming the effects of the wind will be one of the most notable results. Storms etc could get worse.
Extracting energy out of the wind will be one of the better things to do, so that the relative velocity of the wind compared to the Earth's surface is kept to a minimum. This may make the Earth rotate slightly faster but not by much."
Do the winds on the planets have this much imortance???