Questions tagged [geomagnetism]

Questions regarding the magnetic field emanating from Earth's interior.

11 questions with no upvoted or accepted answers
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How could the solar wind cause strange magnetic pulses on Mars at midnight?

24-Feb-2020 NASA News item A Year of Surprising Science From NASA's InSight Mars Mission says: A new understanding of Mars is beginning to emerge, thanks to the first year of NASA's InSight lander ...
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Mars' strange magnetic pulses at midnight; besides the solar wind what are other possible causes?

24-Feb-2020 NASA News item A Year of Surprising Science From NASA's InSight Mars Mission says: A new understanding of Mars is beginning to emerge, thanks to the first year of NASA's InSight lander ...
4
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0answers
75 views

Does solar wind perturb Earth's magnetic field ? If so, what are the consequences?

The Earth's magnetic field makes continuous battle with external disturbances to protect Earth from unwanted ramifications. Asteroids passing by, solar flares, and other ET disturbances may cause ...
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91 views

IGRF -13 Geomagnetic field, Calculating Partial Derivatives of Legendre Polynomials

I have been trying to implement the IGRF-13 geomagnetic model on my own in C code. I have followed the equations from the website below and I am getting correct results for the B$_{\phi}$ and Br ...
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1answer
43 views

How do I find the Datum (Diurnal Correction) number for a Magnetometer

I’m a new prospector who was given the task of learning a GEM GSM-19T Proton Magnetometer. I’ve learned how to set it up, take base readings, and take walking surveys. However when setting up a base ...
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0answers
31 views

If all liquid stuff inside the Earth turned solid, what would be the effect?

There are parts inside the Earth (near the core) that are liquid. Presumably causing the Earth's magnetic field (though there are celestial bodies that are completely solid while they have a magnetic ...
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47 views

What is the relative (magnetic) permeability of the Earth? How could it be measured?

I believe, Earth could be approximated by a molten, metallic, non-magnetic sphere, with a molten stony sphere around it. However, As far I know, the magnetic properties of the lava in the crust, in ...
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21 views

Do living things have a magnetic field capable of any level of solar protection?

I understand how anything with an electrical current have a magnetic field including living things. Would a densely populated rain forest or jungle have enough combined magnetic field among the living ...
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31 views

Can changing magnetic fields or a solidifying core cause the Earth to rotate faster?

I had a small quarrel about this on the physics site. A question was asked about what could cause a change in the rotation speed of the Earth. In addition to the answers given I proposed the ...
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43 views

More iron = Less remanent magnetic field

I am aware that iron is a magnetic mineral and through the process of thermoremanent magnetization it can store a record to the state of magnetization it formed in. I wanted to ask if there are any ...
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78 views

Can we predict the rising temperature of Earth?

Where can I find a model of Earth's past climates and future projections from combined possibilities like magnetic pole movement and other forms of global warming as a map? Without a reference it has ...