Permafrost

What is permafrost

Ground that is is frozen for two or more years

What can permafrost do

Create a foundation for ecosystems

What are ice wedges

Frost cracks that from and expand during the winter

What are Pingos

Ice blisters that have a groundwater connection and ice cores, these slowly build more and more ice until they collapse and start again

What does permafrost release when it melts

Methane and other organic material, causing a runaway feedback loop

How much lower was sea level during the last glacial event

125 M lower than today

What are ice cores

Climate and Athmospheric records, they are literally blocks os ice drilled out of perafrost or glaciers we can study