Can we control the temperature of Earth?

Does Bjarne think that the Earth's magnetic field is generated by the solar wind

Bjarne said:
Amen
Click to expand...
No.
It is just your ignorance of physics that has deluded you into thinking that the solar wind generates the Earth's magnetic field.

I could give you a list of reasons why that idea is idiotic but lets check first if you are silly enough to actually think this:

First asked 2 February 2010
Bjarne,
Do you think that the Earth's magnetic field is generated by the solar wind?

If the answer is yes then then I will definitely add this to the ever growing list of "fatal flaws and basic ignorance in Bjarne's ideas in his three threads".

You also need to address:
  1. How?
  2. What evidence do you have?
P.S. A small clue why a solar wind generated magnetic field is dumb:
The Day the Solar Wind Disappeared
 
Last edited:
Source for your statement that the MF of the Earth is coincident with its temperature

Bjarne said:
If the so-called “inner dynamo” really existed, how on Earth can you explain that temperatures and magnetic variation are coincident?
Click to expand...

First asked 2 February 2010
Bjarne,
What is the source for your claim that "temperatures and magnetic variation are coincident"?
 
Reality Check said:
First asked 2 February 2010
Bjarne,
What is the source for your claim that "temperatures and magnetic variation are coincident"?
Click to expand...
Bjarne says so, that's the source. In fact, it's probably on his webpage, can you ask for more?

Hans:rolleyes:
 
What is the source for your claim that "temperatures and magnetic variation are coincident"?
Click to expand...

This demonstrates that you are criticizing something you haven’t understood.
Denmark have the last 15 been leading in researching the Earth magnetic Field.
As already mentioned we know this is a fact.
I have discussion that with some of the worlds leading experts.
It’s a fact. All researchers that works in that area that area knows it’s a fact.
Only an idiot would deny.
You can check it you self, buy comparing 100.000 years temperature and magnetic curves, or trust the curves I have shown.
http://www.science27.com/Earth/Felt2.jpg
What is yours problem amigo?

Bjarne,
Do you think that the Earth's magnetic field is generated by the solar wind?

If the answer is yes then then I will definitely add this to the ever growing list of "fatal flaws and basic ignorance in Bjarne's ideas in his three threads".

You also need to address:
  1. How?
  2. What evidence do you have?
Click to expand...

The satellites project SWARM is researching why.
We already know that the solar wind is a magnetic dynamo
BUT these contributions are not permanent (right now).
Why ? – if you ask me ?
Because MNP is (now) moving in a area with bad magnetic conductivity, hence the field is fast entangled in its "wake" .
When MNP moves in a area with good conductively the opposite happens; - the magnetic strength build up.

You can SEE that here :
http://www.science27.com/Earth/2.htm

It’s so simple, so obvious, so cow logical simple.

P.S. A small clue why a solar wind generated magnetic field is dumb:
The Day the Solar Wind Disappeared
Click to expand...
The MF of the Earth is ferro-magnetic.
Only the flow in the curst is responsible.
The solar wind can charge (as well as intergrate) the field when MNP is in a good strong conductive area.
The Earth can keep it's (main part) of its strength for long time also without solar wind.
But when MNP is in a bad are this will more or less close the magnetic entrance.
Magnetic entanglement over time will weaken the field gradually more.

Did you know; that when we discovered that the poles sometimes reverses (flips) it was "impossible, that this could be true, because then the Earth "should" (according to the geo dynamo creed) turn the opposite way.
Buuuut then "scientist" just accepted that the inner geo dynamo was “sometimes “ soooo unstable and the problem was solved. Amen.

Yes you can experimentally demonstrate weak magnetic chaose, but in no way something that comes close to the way the Earths MF behaves. This idea is just (one of many) stupid unnecessary entertainment inventions
 
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Bjarne said:
Only an idiot would deny.
You can check it you self, buy comparing 100.000 years temperature and magnetic curves, or trust the curves I have shown.
http://www.science27.com/Earth/Felt2.jpg
What is yours problem amigo?
Click to expand...
Only an idiot would think that unlabeled graph shows that that temperatures and magnetic variation are coincident. Look at the big gap on the right.

What is yours problem amigo? Quoting a crackpot websit full of non-science is not helping your case.

Cite the actual source.

Bjarne said:
The satellites project SWARM is researching why.
Click to expand...
Wrong again:
ESA's magnetic field mission Swarm
The objective of the Swarm mission is to provide the best ever survey of the geomagnetic field and its temporal evolution, and gain new insights into improving our knowledge of the Earth’s interior and climate.

The Earth in particular has a large and complicated magnetic field, the major part of which is produced by a self-sustaining dynamo, operating in the fluid outer-core. However, measurements taken at or near the surface of the Earth are the superposition of magnetic field originating from the outer core as well as the fields caused by magnetised rocks in the Earth’s crust, electric currents flowing in the ionosphere, magnetosphere and oceans, and by currents induced in the Earth by time-varying external fields.
Click to expand...

Bjarne said:
We already know that the solar wind is a magnetic dynamo
Click to expand...
And wrong yet again.
The solar wind is not a dynamo. It is a plasma.

Bjarne said:
When MNP moves in a area with good conductively the opposite happens; - the magnetic strength build up.

You can SEE that here :
http://www.science27.com/Earth/2.htm
Click to expand...
What is yours problem amigo? Quoting a crackpot websit full of non-science is not helping your case.

Cite the actual source.

Bjarne said:
The MF of the Earth is ferro-magnetic.
Click to expand...
And not you are being dumb.
If the solar wind is generating the MF of the Earth then it is not a ferromagnetic.

Bjarne said:
Only the flow in the curst is responsible.
Click to expand...
Another unsupported assertion.

Cite the actual source.

Bjarne said:
Did you know; that when we discovered that the poles sometimes reverses (flips) it was "impossible, that this could be true, because then the Earth "should" (according to the geo dynamo creed) turn the opposite way.
Click to expand...
Do you know: This has been known for decades and the dynamo model shows that this is possible and does not need the Earth to turn the opposite way.
 
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Dynamo Theory

Dynamo Theory
Dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid acts to maintain a magnetic field. This theory is used to explain the presence of anomalously long-lived magnetic fields in astrophysical bodies. The conductive fluid in the geodynamo is liquid iron in the outer core, and in the solar dynamo is ionized gas at the tachocline. Dynamo theory of astrophysical bodies uses magnetohydrodynamic equations to investigate how the fluid can continuously regenerate the magnetic field.
It was actually once believed that the dipole, which comprises much of the Earth's magnetic field and is misaligned along the rotation axis by 11.3 degrees, was caused by permanent magnetization of the materials in the earth. This means that dynamo theory was originally used to explain the sun's magnetic field in its relationship with that of the Earth. However, this theory, which was initially proposed by Joseph Larmor in 1919,[4] has been modified due to extensive studies of magnetic secular variation, paleomagnetism (including polarity reversals), seismology, and the solar system's abundance of elements. Also, the application of the theories of Carl Friedrich Gauss to magnetic observations showed that Earth's magnetic field had an internal, rather than external, origin.
In the case of the Earth, the magnetic field is induced and constantly maintained by the convection of liquid iron in the outer core. A requirement for the induction of field is a rotating fluid. Rotation in the outer core is supplied by the Coriolis effect caused by the rotation of the Earth. The coriolis force tends to organize fluid motions and electric currents into columns (also see Taylor columns) aligned with the rotation axis. Induction or creation of magnetic field is described by the induction equation
Click to expand...
Emphasis added
 
Only an idiot would think that unlabeled graph shows that that temperatures and magnetic variation are coincident
Click to expand...
Tell that to the leading experts in the world, or to these guys:
http://www.nature.com/nature/journal/v247/n5437/abs/247131a0.html
http://adsabs.harvard.edu/abs/2006AGUFMGP51B..02F

The satellites project SWARM is researching why.
Wrong again:
Click to expand...
No
There are many targets.
The magnetic field is full of mysteries.
The intension with the SWARM project is off course to (contribute) to uncover each single of these as well these are connected.

And wrong yet again.
The solar wind is not a dynamo. It is a plasma.
Click to expand...
The Solar Wind carries a magnetic field that affects the Earth.
Every cow on Earth knows that.

If the solar wind is generating the MF of the Earth then it is not a ferromagnetic.
Click to expand...
I did not say: generating, but ; charging

Dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid acts to maintain a magnetic field. This theory is used to explain the presence of anomalously long-lived magnetic fields in astrophysical bodies. The conductive fluid in the geodynamo is liquid iron in the outer core, and in the solar dynamo is ionized gas at the tachocline. Dynamo theory of astrophysical bodies uses magnetohydrodynamic equations to investigate how the fluid can continuously regenerate the magnetic field.
It was actually once believed that the dipole, which comprises much of the Earth's magnetic field and is misaligned along the rotation axis by 11.3 degrees, was caused by permanent magnetization of the materials in the earth. This means that dynamo theory was originally used to explain the sun's magnetic field in its relationship with that of the Earth. However, this theory, which was initially proposed by Joseph Larmor in 1919,[4] has been modified due to extensive studies of magnetic secular variation, paleomagnetism (including polarity reversals), seismology, and the solar system's abundance of elements. Also, the application of the theories of Carl Friedrich Gauss to magnetic observations showed that Earth's magnetic field had an internal, rather than external, origin.
In the case of the Earth, the magnetic field is induced and constantly maintained by the convection of liquid iron in the outer core. A requirement for the induction of field is a rotating fluid. Rotation in the outer core is supplied by the Coriolis effect caused by the rotation of the Earth. The coriolis force tends to organize fluid motions and electric currents into columns (also see Taylor columns) aligned with the rotation axis. Induction or creation of magnetic field is described by the induction equation
Click to expand...
Did you know; that there are periods where the MF of the earth almost disappears?
Only few percent are left.
The MF sometimes dissolves - 2 or maybe 4 different magnetic North and South Poles can emerge, and weak magnetic chaos rules "almost" like on Mars ?

So we know that there are period, where even the worlds most stupid cow never even would dream about claiming that a inner dynamo really existed.
What about you, - do you believe the inner dynamo exist in these periods?
And if so why do you belive the dynamo then is so mad weak and confused ?

All what obviously happens is that a intergrated ferro magnetic field sometimes disintegrate / dissolve
After some time it integrate again, - not because of a inner dynamo suddenly again “begins to work” – BUT because of:
  1. The ferro magnetic conductivity in the area of the placement of the magnetic “entrance”, (which mean the place where the magnetic power lines flows into the Earth), - is very important. Because a good magnetic start , makes its possible for the field to extend to comprehend the whole Earth.
  2. The magnetic field carried by the solar wind, that we already knows effect the Earth.

Magnetic integration, (several separated MF connects) will of course increase the magnetic strength.

Not one single cow believes in the inner geodynamo speculation, - simply because it is not necessary.
I think you have heard that cows have bigger brain than us. (Sorry but I can not give you the source to that claim. But I believe it’s true. )

And one more thing we know that there is coincidence between the Earth MF and global temperatures.

http://www.nature.com/nature/journal/v247/n5437/abs/247131a0.html

http://adsabs.harvard.edu/abs/2006AGUFMGP51B..02F
 
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Bjarne said:
Tell that to the leading experts in the world, or to these guys:
http://www.nature.com/nature/journal/v247/n5437/abs/247131a0.html
http://adsabs.harvard.edu/abs/2006AGUFMGP51B..02F
Click to expand...
At last some papers.
So now we can see that there are some authors other than a crackpot web site that think that there is a correlation between the Earth's magnetic field and climate.

Bjarne said:
The Solar Wind carries a magnetic field that affects the Earth.
Every cow on Earth knows that.
Click to expand...
The Sun generates a magnetic field that affects the Earth.
The solar wind interacts with the Earth's magnetic field and affects that Earth.
Every cow on Earth knows that

Bjarne said:
I did not say: generating, but ; charging
Click to expand...
Then you are still wrong. The solar wind is basically neutral. It cannot charge the Earth enough to do anything but change the existing internally generated magnetic field a bit.

Bjarne said:
Did you know; that there are periods where the MF of the earth almost disappears?
Only few percent are left.
Click to expand...
Did you know; that this is a well known fact?

Bjarne said:
What about you, - do you believe the inner dynamo exist in these periods?
And if so why do you belive the dynamo then is so mad weak and confused ?
Click to expand...
Basic science and yes that generated magnetic field is "mad weak and confused".

Dynamo Theory
Dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid acts to maintain a magnetic field. This theory is used to explain the presence of anomalously long-lived magnetic fields in astrophysical bodies. The conductive fluid in the geodynamo is liquid iron in the outer core, and in the solar dynamo is ionized gas at the tachocline. Dynamo theory of astrophysical bodies uses magnetohydrodynamic equations to investigate how the fluid can continuously regenerate the magnetic field.
It was actually once believed that the dipole, which comprises much of the Earth's magnetic field and is misaligned along the rotation axis by 11.3 degrees, was caused by permanent magnetization of the materials in the earth. This means that dynamo theory was originally used to explain the sun's magnetic field in its relationship with that of the Earth. However, this theory, which was initially proposed by Joseph Larmor in 1919,[4] has been modified due to extensive studies of magnetic secular variation, paleomagnetism (including polarity reversals), seismology, and the solar system's abundance of elements. Also, the application of the theories of Carl Friedrich Gauss to magnetic observations showed that Earth's magnetic field had an internal, rather than external, origin.
In the case of the Earth, the magnetic field is induced and constantly maintained by the convection of liquid iron in the outer core. A requirement for the induction of field is a rotating fluid. Rotation in the outer core is supplied by the Coriolis effect caused by the rotation of the Earth. The coriolis force tends to organize fluid motions and electric currents into columns (also see Taylor columns) aligned with the rotation axis. Induction or creation of magnetic field is described by the induction equation
Click to expand...

Emphasis added.
Emphasis added.
 
Then you are still wrong. The solar wind is basically neutral. It cannot charge the Earth enough to do anything but change the existing internally generated magnetic field a bit.
Click to expand...
You can easy measure that solar storms increases the strength of the Earth magnetic field.
The only "mystery" is why these contributions (right now) not are permanent.
I believe you have got my point on view on that.

Bjarne
What about you, - do you believe the inner dynamo exist in these periods?
And if so why do you believe the dynamo then is so mad weak and confused ?
RC
Basic science and yes that generated magnetic field is "mad weak and confused".
Click to expand...
The inner dynamo speculation is unnecessary creeds, nothing else.
Maybe a “smart” idea 50 years ago, but today, seen from a larger perspective of knowledge: nonsense.
 
The fatal flaws and basic ignorance in RC ideas include:

That RC doesn’t know what the curvature of space really is
That RC doesn’t know what causes the curvature off space
That RC doesn’t know what causes mass attraction
That RC doesn’t know what causes ADG
That RC doesn’t know the nature of the expansive space
That RC doesn’t know what kind of matter the so called dark matter really is
That RC doesn’t know how why people down under doesn’t fall of the Earth (except the curvature of space, that RC also doesn’t know what really is)
That RC doesn’t know how matter and space are connected
That RC doesn’t know how matter can affect space billion of km away from it self.
That RC doesn’t know why a gain of sand effects the whole Universe.
That RC doesn’t know the underlying cause of magnetism
That RC doesn’t know if there are any similarities between magnetism and gravity.
That RC doesn’t know the underlying cause of magnetism
That RC doesn’t know the cause of the Sun magnetic field
That RC doesn’t know why the MF of the Earth is coincident with the temperature variation.
That RC doesn’t know when the next age will start, or if there at all will come one more
That RC doesn’t know why the Sun right now is slowing downs its activity.
That RC doesn’t know why elementary interacts / exchange a virtual particle
That RC doesn’t know why spin up and down is “connected”
That RC doesn’t know why some space probes decelerate and other accelerate
That RC doesn’t know why many planets not are where these “should” be
That RC doesn’t how it is possible that Jupiter’s atmosphere must have come from a cooler place.
That RC doesn’t know that there is coincidence between stars rotation and distance to the planets.
That RC doesn’t know how the Solar system was created; - the old model is full of problem.
That RC doesn’t know what energy drives hurricanes for example on Jupiter and Neptune.
That RC doesn’t know that so soon time change due to gravity, the yardstick must change too, otherwise the law of nature will not be the same everywhere.
That RC doesn’t that because of that the yardstick also changes when times does, the Mercury orbit anomaly is not solved. – It can’t be.
That RC doesn’t know what really causes resistance against motion. (except he know he word that express that (“Erspillten Ladenburmer or Intertia”)
That RC doesn’t know any logical reason to why, resistance against motion suddenly “vups” should disappear out in the blue, when constant is reached.
That RC doesn’t know how to calculate the “negative velocity” due to the resistance of motion, (and hence of cause not able to judge others calculation is right or wrong).
That RC doesn’t know why the most of all stars are to fast or too slow (according to Keplerian orbits) – (except he believe in the fanatic brain washed & mass hypnotic creeds : dark matter)
That RC doesn’t know that stars central in a galaxy “falls from the sky” – they “should” not do so.
That RC doesn’t know if space close around us expand or not, or how much compared to the rest of the universe.
 
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The inner dynamy theory has explained the Earth's magnetic field for about 90 years. It is necessary. It fits the facts.
Click to expand...

It is twisted to fit to believes.

A lot doesn’t fits to facts, for exsample:.
  • Fluctuations (instability) of the strength of the Earth's magnetic field.
  • The South Atlantic Anomaly.
  • Many of the crust anomalies (for instance the African crust anomaly).
  • The reversal of the Magnetic Poles every 200,000 years.
  • The coinciding periods (of thousands of years) of correlation between the Earth’s global temperature and the strength of the Earth’s global magnetic field .
  • The periodical decreasing of the Earth's magnetic field to only a few percent of its average strength.
  • The correlation between Magnetic Anomalies & Thermal Activities.
  • The periodic emergence of 2 (or possibly 4) different Magnetic South and North poles.
 
Bjarne said:
It is twisted to fit to believes.


A lot doesn’t fits to facts, for exsample:.
  • Fluctuations (instability) of the strength of the Earth's magnetic field.
  • The South Atlantic Anomaly.
  • Many of the crust anomalies (for instance the African crust anomaly).
  • The reversal of the Magnetic Poles every 200,000 years.
  • The coinciding periods (of thousands of years) of correlation between the Earth’s global temperature and the strength of the Earth’s global magnetic field .
  • The periodical decreasing of the Earth's magnetic field to only a few percent of its average strength.
  • The correlation between Magnetic Anomalies & Thermal Activities.
  • The periodic emergence of 2 (or possibly 4) different Magnetic South and North poles.
Click to expand...
You ignoroance is still strong.
Dynamo theory explains:
  • Fluctuations (instability) of the strength of the Earth's magnetic field.
  • The reversal of the Magnetic Poles every 200,000 years.
  • The periodical decreasing of the Earth's magnetic field to only a few percent of its average strength.
  • The periodic emergence of 2 (or possibly 4) different Magnetic South and North poles
South Atlantic Anomaly
The South Atlantic Anomaly (SAA) refers to the area where the Earth's inner Van Allen radiation belt comes closest to the Earth's surface, leading to increased levels of cosmic radiation at lower altitudes than elsewhere over the surface. The effect is a "weak spot" in the Earth's magnetic field, which can expose orbiting satellites and spacecraft to higher levels of radiation than usual.
Click to expand...

The crust anomalies (for instance the African crust anomaly) are ... continental crust anomalies. They are basically caused by the different coposition of the crust.

The coinciding periods (of thousands of years) of correlation between the Earth’s global temperature and the strength of the Earth’s global magnetic field are nothing to do with the origin of the Earth's magnetic field.

I have no idea what you mean by "The correlation between Magnetic Anomalies & Thermal Activities" - what "thermal activities"? What correlation?
But
  • The Eath's magnetic field has many measured anomalies. AFAIK most of these are due to the different materials that the crust is made of. That in turn should lead to different activities.
 
---------
Reality Check said:
You ignoroance is still strong.
Dynamo theory explains:
  • Fluctuations (instability) of the strength of the Earth's magnetic field.
  • The reversal of the Magnetic Poles every 200,000 years.
  • The periodical decreasing of the Earth's magnetic field to only a few percent of its average strength.
  • The periodic emergence of 2 (or possibly 4) different Magnetic South and North poles
Click to expand...
Ohh yeehh and HC Andersen could have done that much better and maybe the Pope as well.

South Atlantic Anomaly
Click to expand...
It's not solve, and that's why Argentina is so active in the reasearch project.

The crust anomalies (for instance the African crust anomaly) are ... continental crust anomalies. They are basically caused by the different coposition of the crust.
Click to expand...
Crap.
Leading experts don’t know, - the best guess is that it is caused by a meteor.
If you don’t believe, - ask the worlds leading expert : Niels Olsen, or the leader of Danish Space Center Eigil Friss Møller, (recorded) or 1000 other expert in that area that knows what they speak about .

The coinciding periods (of thousands of years) of correlation between the Earth’s global temperature and the strength of the Earth’s global magnetic field are nothing to do with the origin of the Earth's magnetic field.
Click to expand...
Off course it have, - what else ?
Because you (and many other left brained) can’t see coherence connections, it doesn’t mean that such doesn’t exist.
The real problem is rather that you know it is "dangerous" even to try to think in a coherent way, because the result can only be that the old geo-dynamo speculation must turn over. - So better don't and follow the mainstream brianwashed creeds.

I have no idea what you mean by "The correlation between Magnetic Anomalies & Thermal Activities" - what "thermal activities"? What correlation?
Click to expand...
This demonstrate you criticize a theory you even haven’t read
http://www.science27.com/Earth/index.htm

The Earth’s magnetic field has many measured anomalies. AFAIK most of these are due to the different materials that the crust is made of. That in turn should lead to different activities.
Click to expand...
Right some of these have.
 
Bjarne said:
This demonstrate you criticize a theory you even haven’t read
http://www.science27.com/Earth/index.htm
Click to expand...
Now you link to a crackpot web page that lies and exposes the authors ignorance:
The commonly accepted "Inner Dynamo" theory cannot explain the majority of the Earth's magnetic anomalies. For example, why the Earth's magnetic field is periodically reversing its poles or why it operates sometimes at a fraction of its average strength.
The magnetic field produced by such an "inner dynamo" mechanism should be as stable as the stable spin of the Earth.
These magnetic anomalies are so strange that they could only be compared to the Earth reversing its spin, or reducing its rotational speed (so that a 24 hour day becomes a 1,000 hour day.).
Until now, the following points have been underestimated or not fully understood:
  • The magnetic material in the Earth’s crust is enough to create a global magnetic field.
  • The importance of the 'frozen' and 'non-frozen' magnetic structures in the Earth’s crust.
  • The primary power behind magnetic integration (thereby strengthening or weakening the global magnetic field)
Click to expand...

The lies:
  1. Dynamo theory does explain why the Earth's magnetic field changes polarity​

  1. Many scientists believe that reversals are an inherent aspect of the dynamo theory of how the geomagnetic field is generated. In computer simulations, it is observed that magnetic field lines can sometimes become tangled and disorganized through the chaotic motions of liquid metal in the Earth's core.
    Click to expand...
    ​

  1. N.B. This is not the only explanation.
  2. Dynamo theory does explain why the Earth's magnetic field varies(magnetic secular variation).​
  3. The Earth's magnetic field does not originate from the "magnetic material in the Earth’s crust".


    See below: "the application of the theories of Carl Friedrich Gauss to magnetic observations showed that Earth's magnetic field had an internal, rather than external, origin.". Here external means the crust.​

The ignorance:
The author's ignorance is that he seems to not know much about dynamo theory except its name. He thinks that the "dynamo" part is like a a dynamo that produces an magnetic field from a spinning electric current. That is the only way that I can explain the references to the spin of the Earth.
Dynamo theory starts with the Earth's constantly rotating molten iron core but the magnetic fields come from the convection in the molten rotating, convecting, and electrically conducting fluid.​
Dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid acts to maintain a magnetic field. This theory is used to explain the presence of anomalously long-lived magnetic fields in astrophysical bodies. The conductive fluid in the geodynamo is liquid iron in the outer core, and in the solar dynamo is ionized gas at the tachocline. Dynamo theory of astrophysical bodies uses magnetohydrodynamic equations to investigate how the fluid can continuously regenerate the magnetic field.​

It was actually once believed that the dipole, which comprises much of the Earth's magnetic field and is misaligned along the rotation axis by 11.3 degrees, was caused by permanent magnetization of the materials in the earth. This means that dynamo theory was originally used to explain the sun's magnetic field in its relationship with that of the Earth. However, this theory, which was initially proposed by Joseph Larmor in 1919,[4] has been modified due to extensive studies of magnetic secular variation, paleomagnetism (including polarity reversals), seismology, and the solar system's abundance of elements. Also, the application of the theories of Carl Friedrich Gauss to magnetic observations showed that Earth's magnetic field had an internal, rather than external, origin.​


In the case of the Earth, the magnetic field is induced and constantly maintained by the convection of liquid iron in the outer core. A requirement for the induction of field is a rotating fluid. Rotation in the outer core is supplied by the Coriolis effect caused by the rotation of the Earth. The coriolis force tends to organize fluid motions and electric currents into columns (also see Taylor columns) aligned with the rotation axis. Induction or creation of magnetic field is described by the induction equation:

ad88703482603b407ab56fca7d30922c.png


where u is velocity, B is magnetic field, t is time, and η = 1 / σμ is the magnetic diffusivity with σ electrical conductivity and μ permeability. The ratio of the second term on the right hand side to the first term gives the Magnetic Reynolds number, a dimensionless ratio of advection of magnetic field to diffusion.​
Click to expand...
 
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Dynamo theory
Click to expand...

My friend it is NOT a theory.
It is speculation humbug

I would give it a 10 % change, but only if the Earth sometime rotate the opposite way
And It doesn't...

Sometimes the magnetic poles reverses. The day we knew that, this speculation should had been scotch

Every cow on Earth can see it is something wrong with that speculation
 
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