This preview shows page 1. Sign up to view the full content.
Unformatted text preview: gradual 7. When did the deep freeze of Antarctica finally take hold? Was this process gradual or rapid? [2 pts] 14 Million of years after the initial freeze; rapid 8. What do scientists study in ice records? How far does the current ice record go (before the expedition described in this video)? [2 pts] Tiny bubbles of the atmosphere from thousands and millions of years ago; 800,000 years 9. How much warmer was the earth during the Pliocene period (3-5 million years ago) compared to today? Why are scientists particularly interested in whether the eastern ice shelf in Antarctica melted during that time or not? [2 pts] 3-5 degrees warmer; If they melted then, they could melt again causing very high sea levels 10. What was the condition of ice in western Antarctica and the sea level during Pliocene relative to today? [2 pts] Sea levels rose about 23 feet – later said 60 feet with contributions from the Easter Ice Shelf; ice sheets melted and came back again many times...
View Full Document
This note was uploaded on 08/31/2011 for the course GEO 271 taught by Professor Maingi during the Spring '11 term at Miami University.
- Spring '11