Permafrost Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

what is permafrost

A

a layer of permanently frozen soil (0c for over 2 years)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

consequences of permafrost thawing

A

loss of infrastructure, landslides, realease of stored carbon as methane a powerful GHG(contributing to global warming acceleration)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

good consequence of thawing permafrost

A

increase of vegetation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

explain the release of methane

A

because permafrost is thawing faster and soil is remaining thawed for longer period of time this causes more plants to grow but also an increase in decomposers. decomposition releases greenhouse gases like methane and carbon dioxide into the environment, contributing to global warming.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what about carbon trapped in ice

A

carbon trapped in ice is also released as permafrost melts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

explain how loss of infrastructure and landslides occur

A

When the ice in permafrost melts, the ground becomes unstable and can slump, causing rock and landslides, floods, and coastal erosion. The buckling earth can damage buildings, roads, power lines, and other infrastructure.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly