Geomagnetic reversal https://en.wikipedia.org/wiki/Geomagnetic_reversal A geomagnetic reversal is a change in a planet's magneti...
Geomagnetic reversal
https://en.wikipedia.org/wiki/Geomagnetic_reversal
A geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged, while geographic north and geographic south remain the same.
The time spans of a given state are randomly distributed with the most being between 0.1 and 1 million years with an average of 450,000 years.
Magnetic Pole Reversal Happens All The (Geologic) Time
https://www.nasa.gov/topics/earth/features/2012-poleReversal.html
Earth's magnetic field has flipped its polarity many times over the millennia. Earth has settled in the last 20 million years into a pattern of a pole reversal about every 200,000 to 300,000 years. Scientists estimate reversals have happened at least hundreds of times over the past three billion years.
Earth's magnetic field physical origin
https://en.wikipedia.org/wiki/Earth%27s_magnetic_field#Physical_origin
The Earth's magnetic field is believed to be generated by electric currents in the conductive material of its core, created by convection currents due to heat escaping from the core.
Earth has a magnetic field because its solid iron core is surrounded by a fluid ocean of hot, liquid metal. The flow of liquid iron in Earth's core creates electric currents, which in turn create the magnetic field.
The Sun's Magnetic Field is about to Flip
https://www.nasa.gov/content/goddard/the-suns-magnetic-field-is-about-to-flip/
The sun's magnetic field changes polarity approximately every 11 years. It happens at the peak of each solar cycle as the sun's inner magnetic dynamo re-organizes itself.
https://en.wikipedia.org/wiki/Quasi-biennial_oscillation
The Earth's quasi-biennial oscillation (QBO) is a quasiperiodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months.
Jupiter and Saturn have equivalents of Earth’s Quasi-Biennial Oscillation
https://tallbloke.wordpress.com/2017/12/13/jupiter-and-saturn-have-equivalents-of-earths-quasi-biennial-oscillation/
Despite their considerable differences, the atmospheres of Earth, Jupiter, and Saturn all display a remarkably similar phenomenon in their equatorial regions: vertical, cyclical, downwards-moving patterns of alternating temperatures and wind systems that repeat over a period of multiple years.
NASA Solves How a Jupiter Jet Stream Shifts into Reverse
https://www.nasa.gov/feature/goddard/2017/nasa-solves-how-a-jupiter-jet-stream-shifts-into-reverse
NASA's model assumes gravity waves are produced by convection in the lower atmosphere and travel up into the stratosphere, where they force Jupiter's quasi-quadrennial oscillation to change direction. The results of the simulations were an excellent match to the new set of observations, indicating that they correctly identified the mechanism.
Similarities
- driven by the heat and the planet's angular momentum
- based on fluid dynamics
- periodical effects
Differences
- gas vs. highly viscous liquid
- evenness of heat distribution
- length of the period
- evenness of periodicity
The similarities are obvious, the differences may be explained by the difference of the contributory matter and the difference of the heat distribution.
The physical base of the quasi-periodic atmospheric oscillations could be an obvious explanation for the geomagnetic reversal. Is it possible that the two effects - even with differences - are the different manifestation of the fundamentally same physical base?
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