Bangui magnetic anomaly

Re:Bangui magnetic anomaly by op03 on Wednesday February 03, 2021 @01:37AM (#26011188)

When they say its negative -1000nT or whatever, what does that mean? Compasses point to the South Pole?

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Re:Bangui magnetic anomaly by jusssi on Wednesday February 03, 2021 @02:15AM (#26011355)

Google says that the magnetic field strength on surface is between 30µT and 60µT. To these values, the anomaly would be a bump of at most 3%.

I would guess the negative indicates that the field has reduced strength there.

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Re:Bangui magnetic anomaly by tommykins on Wednesday February 03, 2021 @04:20PM (#26019251)

It's more to do with the overall intensity of the anomaly. If you'd like to become thoroughly confused, I'd recommend looking up remnant magnetisation, which is the bane of my existence.

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