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RIROCKHOUND · 02-02-2006, 10:52 AM

Flap:
The problem is that all of those happen on geologic time scales, and we can't readily observe alot of these changes.
Axis/orbit length/orbit ecentricity are all part of the Milankovich cycle; which have periods of 23K yrs, 41K yrs, 100/400k yrs...

ice ages (glacial/interglacial) is generally on the order of 100k... i.e the last glacial max was ~20K BP, before that there was a long warm period ~75K yrs...

All of these are longer time scales than greenhouse gases, increased heat absorbtion (all that black-top) etc....

But you're right... there is change going on constantly.... most people dont appreciate it or grasp it....

02-02-2006, 10:52 AM	#5
RIROCKHOUND Also known as OAK iTrader: (0) Join Date: Apr 2003 Location: Westlery, RI Posts: 10,408	Flap: The problem is that all of those happen on geologic time scales, and we can't readily observe alot of these changes. Axis/orbit length/orbit ecentricity are all part of the Milankovich cycle; which have periods of 23K yrs, 41K yrs, 100/400k yrs... ice ages (glacial/interglacial) is generally on the order of 100k... i.e the last glacial max was ~20K BP, before that there was a long warm period ~75K yrs... All of these are longer time scales than greenhouse gases, increased heat absorbtion (all that black-top) etc.... But you're right... there is change going on constantly.... most people dont appreciate it or grasp it....
	Bryan Originally Posted by #^&#^&#^&#^&#^&#^&#^&#^&#^&#^&#^& "For once I agree with Spence. UGH. I just hope I don't get the urge to go start buying armani suits to wear in my shop"