Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Strategies & Market Trends : Booms, Busts, and Recoveries -- Ignore unavailable to you. Want to Upgrade?

To: Taikun who wrote (59314)	1/23/2005 7:52:32 PM
From: Condor	Read Replies (1) \| Respond to of 74559

How about centrifigal force as the earth spins on its axis?

To: Taikun who wrote (59314)	1/24/2005 3:25:30 AM
From: Gib Bogle	Read Replies (2) \| Respond to of 74559

Movement of tectonic plates is a result of the convective motion of molten rock within the earth. There isn't anything new about this. The tectonic plates are in constant motion, and earthquakes occur when slippage occurs on a stuck interface between plates. I thought this was well known. Maybe you also like the theory that the US military triggered the earthquake intentionally. Gib

To: Taikun who wrote (59314)	1/24/2005 11:56:47 AM
From: Snowshoe	Read Replies (1) \| Respond to of 74559

>>melting ice CAPS take pressure off the poles<< The Arctic polar ice all floats on the sea, so there is no change in pressure when it melts. Melting of the main Antarctic ice sheets (which rest on land) would cause isostatic rebound and I suppose theoretically might trigger earthquakes. But so far there has been no significant melting of the Antarctic ice sheets. However some of the floating Antarctic ice shelves have receded, but this would not cause a change in pressure. The recent Sumatra quake is just another example of Earth's ongoing plate tectonics process, which has been active for billions of years.

To: Taikun who wrote (59314)	1/24/2005 1:40:27 PM
From: Maurice Winn	Read Replies (1) \| Respond to of 74559

<I assume you think the reason the shape of the earth is more like a doughnut than a baseball has nothing to do with the weight exerted by the polar ice caps. Have you not read where melting ice caps take pressure off the poles and the shape of the earth changes. Movement of tectonic plates is a symptom of that.> As elM mentioned there's a thing called isostacy. If all the ice melts off Antarctica, then the continent will rise, just as happened and is still happening in Northern Europe where the huge ice sheets melted. The continents are all floating and when things are floating, they are nicely balanced. Earth's waistline won't increase or shrink with ice melting. The waistline is a function of rotational speed. As Earth spins slower, the waistline will shrink. As elM also mentioned, a floating iceberg, such as the North Pole ice cap, is perfectly balanced. If it melts, there is no pressure change - it's not detectable elsewhere except for currents induced by density differences between salt vs fresh water. If you put a pressure measuring gadget on the ocean floor under the melting ice, you won't see the pressure reduce as the ice melts. The Himalayas are like a giant iceberg, floating on a ball of liquid mantle. Google is great. Here's a picture: stvincent.ac.uk Mqurice