Reversing magnetic north and south

DEEP DOWN in the southern hemisphere scientists are trying to find out when the North Pole is suddenly going to become the South Pole.

According to the British Geological Survey, a world-renowned geoscience center, “The Earth’s magnetic field has had many highs, lows, and reversals in its past. The last reversal was around 800,000 years ago. So the Earth is known to be able to re-generate its field and has done so during human pre-history.”

A report from the scientific body says that South Georgia sits within a weak spot in the Earth's magnetic field known as the “South Atlantic Anomaly” (SAA). In this area, radiation from space penetrates deeper into the atmosphere.

“The SAA is growing and spreading westwards from South Africa as the Earth’s internal magnetic field rapidly weakens in this region. Scientist believe this may be evidence of a coming reversal in the direction of the Earth’s internal magnetic field,” says the report.

Well, I knew that scientists had examined ancient rocks whose construction revealed that the magnetic field was once reversed, but I never realized it had happened several times, and I never thought it would occur again in my lifetime. Can you imagine what’s going to happen?

All our maps, charts, and  atlases will have to be redrawn with a new north at the top, a north that we call the south at the moment. Geographic globes will have to be remade upside down. You can throw away your GPS and compasses  because the sun will rise in the west and set in the east. The blue bits on bar magnets will have to be painted over with red, and vice versa.

Antarctica and the penguins will be at the North Pole and all the polar bears will have to move to the South Pole. The South Pacific will swop names with the North Atlantic. The Northwest Passage will become the Southeast Passage and the trade winds will blow northwest and southwest.

South Carolina and North Dakota will have to change to North Carolina and South Dakota. Google Earth will have to turn upside down and have all its lettering changed. And lord knows what-all else.

Gawd, what a mess. I can’t believe those secretive scientists are springing this on us at the last moment. I’m having a hard enough time coping with the concept of global warming. The idea of turning the whole world on its magnetic head is overwhelming. I think I need to lie down for a while. Either that or drink a beer. I think I’ll try the beer first.

Today’s Thought

The more science learns what life is , the more reluctant scientists are to define it.

— Leila M. Coyne, San Jose State University

Tailpiece

An Italian immigrant was having trouble with English irregular verbs.

“I can’ta weara my wool skirt anymore,” she said. “I have send it to the cleaners and they shrinked ... shrank ... shrunk ... Oh!” she broke off in desperation. “I putted on weight.”

^{(Drop by every Monday, Wednesday, Friday, for another Mainly about Boats column.)}