B Compass below earth surface

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1. Jul 9, 2016

hackhard

since magnetic field lines form closed loops , field inside earth must be due geographic south
will compass below earth's surface point to geographic south?

2. Jul 9, 2016

Orodruin

Staff Emeritus
The first figure on the Wikipedia page on the Earth's magnetic field should answer your question. The magnetic field inside the Earth is much more complicated than a dipole field.