Alaska (HA in periglacial )

Cards (10)

Where is oil extracted in Alaska
Prudhoe Bay
Where is TAPs
From Prudhoe bay to Valdez
Why is oil important for Alaska
Creates 1/3rd of jobs
US security is increased
What % of alaska is covered by permafrost
90%
How does removal of vegetation affect the active layer?
allows heat to thaw the permafrost and active layer will increase
What has been built that has lowered albedo
Airports - deadhorse airport. Means more heat is absorbed
What has been built that can release heat into the ground
Oil rigs and and lodgings for workers
What has happened due to the dust from gravel roads
Road side vegetation has died
How does an increase in heat affect solifluction
more meltwater so the soil is more saturated
What is thermokarst?
Melting of permafrost leading to land subsidence and formation of depressions.