Questions regarding the magnetic field emanating from Earth's interior.
Questions tagged [geomagnetism]
70 questions
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What is the nature of the "unexpected geomagnetic pulse that took place beneath South America in 2016"?
Popular news has several articles linking back to the news article in Nature Earth’s magnetic field is acting up and geologists don’t know why which discusses the need for an early update to the World Geomagnetic Model.
However my question is about…
uhoh
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Where do the electric charge carriers for the current for earth's magnetic field come from?
I have some trouble trying to understand, why streams and convections in the outer liquid earth core, coriolis forces etc. would create an electric current?
Because you probably need an electric potential first and what then is the cause of the…
Gerard
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How can there be zero magnetic declination in places where the magnetic and geographic poles don't line up
Here's a global map of magnetic declination:
How can there be zero magnetic declination in places where the magnetic and geographic poles don't line up (which is only at approx. latitude 0 and 180 for the northern hemisphere)? And why are the lines…
new editor
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Recursion relations of Associated Legendre Polynomials with Schmidt Semi-normalization
Can someone please provides me with the recursion relations of Associated Legendre Polynomials when using Schmidt quasi-normalization? I need that in the context of Geomagnetism to obtain the Spherical Harmonics coefficients g and h.
Ayoub
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How does liquid iron create a magnetic field?
I'm pretty sure metal loses more of its structure as it heats up, so...how does the difference in rotation of Earth's liquid inner and outer core generate any kind of magnetic field? Why wouldn't the magnetic field be even stronger if those two…
user14554
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How close to the magnetic poles will a compass be accurate?
So the Earth has a giant magnetic field we use to determine direction. The field roughly looks like a magnetic dipole, but because the field is generated by a turbulent liquid dynamo near the Earth's core, it's not a perfect dipole.
This leads me to…
MichaelS
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