Subject:
|
Re: Global Warming (was: Re: Why is AIDS such a big deal?)
|
Newsgroups:
|
lugnet.off-topic.debate
|
Date:
|
Wed, 10 May 2000 19:28:53 GMT
|
Viewed:
|
691 times
|
| |
|
|
Jeff Stembel wrote:
> I'd like to hear where you read there wasn't enough ice in the caps to raise
> the sea level much. I saw a report (on the Discovery channel, I believe) that
> at one point, millions of years ago, the sea level was a couple *hundred* feet
> higher, due to the fact that there were no ice caps.
Jeff is correct. See my last post(5623).
For general information- scientists measure the amount of ice on the
planet at a given time by looking at oxygen isotope ratio in deepsea
sediment cores. ^16-O is selectively stored in ice over the heavier
^18-O. When you see more ^16-O in the sediment cores you can tell
the climate was warmer, when there is less or none- it was
colder. This is the main method scientist use to estimate that
factor in past climates.
-chris
|
|
Message is in Reply To:
228 Messages in This Thread:
(Inline display suppressed due to large size. Click Dots below to view.)
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
