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# Understanding Antarctic Ice - PowerPoint PPT Presentation

Understanding Antarctic Ice. South Pole. Dome. road to work. Summer camp. Amundsen-Scott South Pole station. Amundson-Scott South Pole. Questions about the ice. A. How cold the ice is B. How old the ice is C. How the ice moves D. How clean the ice is. Light traveling through ice.

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## PowerPoint Slideshow about ' Understanding Antarctic Ice' - bailey

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Presentation Transcript

Dome

Summer camp

Amundsen-Scott South Pole station

Amundson-Scott South Pole

A. How cold the ice is

B. How old the ice is

C. How the ice moves

D. How clean the ice is

Object is

blurred

scattering

absorption

Object is

dimmer

1. Bubbles (trapped air)

Q: As we go deeper, scattering by bubbles

• gets stronger (worse)

• gets weaker (better)

• does not change

Why?

2. Dust particles

Q: As we go deeper, scattering by dust

Ans. varies wildly

3. Volcanic Ash

Old school approach: take ice cores

Measure twice,

melt once

(We don’t really need to know, but we can measure it.)

CNN

The ice surface moves by

one inch per day= 9 m/yr

“South Pole” is marked every Jan 1

of ice sheet is dry (frozen) or

wet (melted)