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Politics : Manmade Global Warming, A hoax? A Scam? or a Doomsday Cult?
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To: russet who wrote (1407)8/9/2010 2:30:27 PM
From: Jorj X Mckie  Read Replies (3) of 4326
 
There is another variable that is never brought into the equation. That is earth's own magnetic field. And it is becoming weaker.

I'd like to see a study on climate patterns compared to the strength and orientation of the earth's magnetic field.

Magnetic Shield
Earth's geodynamo creates a magnetic field that shields most of the habited parts of our planet from charged particles that come mostly from the sun. The field deflects the speeding particles toward Earth's Poles.

Without our planet's magnetic field, Earth would be subjected to more cosmic radiation. The increase could knock out power grids, scramble the communications systems on spacecraft, temporarily widen atmospheric ozone holes, and generate more aurora activity.

news.nationalgeographic.com

Current records suggest that we are long overdue for our next reversal, he said. "On average, there is a reversal around every 400,000 years, but this varies a lot." The geological record suggests that the last reversal was around 800,000 years ago.

Furthermore, there is already evidence to show that the field has been weakening over the last few centuries – some archaeological remains suggest that the field was far stronger in the time of the Roman Empire, some 2,000 years ago.

cosmosmagazine.com
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