Cool Cores Capture Climate Change An EET Chapter

Antarctic Glacier Simulation http://andrill.org/system/files/web/images/edu/iceshelfadvanceretreat.swf Glaciers melt a lot faster than they freeze

The Value of Drilling http://www.andrill.org/iceberg/videos/2007/index.html See videos 2,4, 5, and 6

Sediment Types See Power Point of sediment cards

PSICAT Models

Possibilities Warm +2 degrees, Cool -2 degrees During warming, mudstone with clasts 500 years, diatomite 500 years During cooling, diatomite 2900 years, mudstone 3100 years, diamictite 3000 years Core Story: Thousands of years ago, the earth underwent a warming phase with diatoms thriving in the Antarctic waters. Then a cooling phase led to the depositing of mudstone. The earth warmed again, creating diatomite. Then the earth underwent a long ice age, cooling the earth and depositing many rocks from glaciers as clasts. Finally the earth warmed again, creating diatomite. Diatomite is longest trend, because it occurs the slowest. Drill Site #2 receives longer impact from the glacier movements and less time exposed to open water. Radio carbon dating, fossils, could be used for the cores, for dating purposes. Somehow we would need to tie to core to known events with dates. 200 meters = 1 million years?

Core Pictures Core Gallery What do the different colors represent?

PSICAT Model of Core

Summary Antarctica and the Earth as a whole have experienced climate change for millions of years Right now we are in a relatively cold time or icehouse Antarctica was once very warm Scientists use cores from Antarctica to understand climate change

References This project was created by the Earth Exploration Toolbook, please see http://serc.carleton.edu/eet/cores/index.html for further details.