Gases in ice bubbles

Paleoclimatology

Stratificationin ICE

Setting up a drill

Drill bit

A column of ice

Extracting the gas

Analyzing the gas

Label the x-axis starting from the left side (y-axis)

In descending order of years from 1821 down to 1811.

What year is this?

1821

• 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

• _________________________________________________________________________• ___________________________________________________________________________