1. Gases in ice bubbles Paleoclimatology

2. Stratification in ICE

3. Setting up a drill

4. Drill bit

5. A column of ice

7. Extracting the gas

8. Analyzing the gas

12. Label the x-axis starting from the left side (y-axis) In descending order of years from 1821 down to 1811.

14. What year is this? 1821

15. Name ______________________________ date ____________ SECRETS IN THE ICE questions What year does it appear that the volcanic sulfate from the unknown 1808-1809 volcano eruption arrived in Antarctica? ___________________________ Look at your graph. What patterns do you see among the sodium, chloride, and sulfate ion concentration? ____________________________________________________________________________ Based on the sulfate ion concentration peaks, when does spring seem to occur? Based on the sodium and chloride ion concentration peaks, when does winter seem to occur? In what months do each of these seasons occur in the SOUTHERN HEMISPHERE? (think!!!) ___________________________________________________________________________ ____________________________________________________________________________ What other element or compound would be useful to have historical information on? Explain your answer _________________________________________________________________________ ___________________________________________________________________________