Dr. Jeff Masters' WunderBlog |
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| Posted by: Dr. Jeff Masters, 6:44 PM GMT on March 07, 2006 | +0 |
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.
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Inyo, not all science tends liberal - but as a group, intellectuals (which scientists are definetly among) tend liberal, both in all the polls and studies I've seen and in my own experience.
but on a more serious note, no, there is no way that melting glaciers are going to significantly affect the earth's movements relative to the sun or other planets. Keep in mind that huge ice sheets have covered the earth and melted back to nothing literally hundreds if not thousands of time in the earth's history. The earth didn't flip over, fly into the sun, or careen off into deep space any of those 100 times, why would it do it now?
There are tiny effects, i remember reading somewhere that all the dams on earth have changed the earth's rotation VERY slightly by moving mass around. however, i think most scientists agree that the effects of this are completely insignificant compared to volcanos, comets, solar fluxuations, natural variations in the earth's tilt, and levels of co2 in the atmosphere.
the earth is naturally slowing down in rotation, i think in the earth's history the day's length has increased by a couple of hours. However, the sun will go nova and incinerate the earth far before the effects of the rotation slowing would make a difference.
Also, since no orbit is truly stable, the moon will eventually either fall onto the earth or careen off into space. However, again, this will be long after the sun is gone and the earth is a cold, empty rock.
I don't think the ice melting will add another 16,000 miles of extra diameter.
Pony was agreeing it would affect the spin speed but only by a tiny amount
I haven't heard about the dams having an effect on the Earth, but it would make sense. Just like the Indian Ocean Tsunami increased the day length by like 1/4 second or even less.
Also the Earth has slowed down by a factor of 6. The Earth originaly spun so fast that a day took about 4 hours according to a study I once read. Due to the pull of the moon and the sun, we have slowed down to 24 hours in a day in the last 4 billion years. I dont remember how much we're slowing down now, but we aren't slowing very fast.
A slower Earth isn't really a bad thing, anyways. If we adjusted the calander for it we'd be gaining time during the day, while having less days in a year, doesnt sound too bad to me. This will take millions of years though, so dont expect a calander change in our lifetimes.
A lot less -- 2.68 microseconds, not 250,000. :-)
as for cyclonebuster, if i had any respect for your knowledge of physics or science in the past, it is gone now. If the tunnels are as well thought out as your 'theories' on the earth flipping over, they are a lost cause for sure.
I would appreciate a 2nd opinion on the imagery that I have collected here:
http://www.lermanet.com/antarcticmelt/
There appears to be substantial volcanism occurring along the transantarctic mountains near ross island. Email to alerma@verizon.net
thanks
arnie lerma
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