The big Southern magnetic field anomaly was discovered a while back, and it’s pretty strange. This very large weakening magnetic field extends throughout South America, and almost to Africa. A sort of “tail” of the effect extends into the Pacific.
According to Phys.org, the magnetic field isn’t issuing from the core as it should, but returning into the core. One of the areas involved is moving westward over Africa. If that sounds a bit vague, these images will show you how complex the mantle and core really are.
These are gigantic masses of material, directly affecting the magnetic field. They’re called Large Low-Velocity Provinces (LLVPs). They are believed to be chunks of an ancient planetary collision with a hypothetical planet called Theia. They supposedly directly affect the magnetic field.
The anomaly has also changed from a largely academic exercise into an in theory possibly highly disruptive incident. The projected effects of the anomaly include satellite disruption, effects on power grids, radiation exposure, and possible effects on animal migration.
Earth’s magnetic field delivers protection from radiation in combination with the ozone layer and atmosphere. It’s unclear how much of a problem the weakening field is in these regards.
Solar storms can be similar in their effects on electronic systems. The question inevitably arises as to whether a significantly weakened magnetic field can make these effects worse.
If so, the magnetic field issue is far more likely to be a long-term problem. In geological terms, the magnetic field is already moving pretty rapidly and visibly extending.
So far, the effects seem to be marginal. The anomaly isn’t “swallowing satellites” yet. The AI predicted effects are generic, rather than applied, and well within predicted bandwidths. Surprised? This is why you need people looking at these issues.
Pole movement is also related to the magnetic core. It’s unclear whether there is any direct relationship at all between the anomaly and Earths flipping magnetic poles. It’s a natural correlation, but not supported by science so far. Conjecture is the available option.
This could get tricky. If there’s a need to adapt to a seriously weakened magnetic field, it’s also likely to be expensive. Guess who’s paying.
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The opinions expressed in this Op-Ed are those of the author. They do not purport to reflect the opinions or views of the Digital Journal or its members.
