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Pine Island Glacier, Antarctica, calving

HBS Guy

Head Honcho
Staff member
Pine Island Glacier calving

This is the glacier we have know would cause massive ice loss from the West Antarctic Ice Sheet (WAIS.)

he speed of the PIG, the tensions induced by its progression and therefore its calvings are not influenced by the seasons and the presence of sea ice has practically no influence, as do summer temperatures.

Perhaps in the future, as a result of a subsequent rise in summer temperatures, summer phenomena could appear that would inflate calving in that season.
This is not the case at the moment. . . .

EDIT2: What is not normal is having two big calvings a year apart, and then continuing with large calvings.
What can be translated by a significant receding of the calving front
The ice sheet is moving. This causes stresses and cracks appear creating blocks of ice that calve. These are marine grounding glaciers—their front end is in the sea forming an ice cliff 1000m high, 60m of that above the water (ice is not strong enough to support more than 60m.)

What is causing the melting/calving is warm currents from the oceans around the Southern Ocean: South Atlantic, Pacific and Indian Oceans, these lap the below surface ice cliffs until the ice above collapses and calves off.

If the PIG—Pine Island Glacier—substantially collapses and calves off then the Thwaites Glacier will go as well, followed by the rest of the WAIS. Consequent large increase in sea levels. Unless we accept responsibility and decarbonise the global economy. Will still have massive ice melt/sea level rise unless we can also remove CO2 from the atmosphere, reduce it to 320-ish ppm.
 

MilesAway

Bongalong
Pine Island Glacier calving

This is the glacier we have know would cause massive ice loss from the West Antarctic Ice Sheet (WAIS.)



The ice sheet is moving. This causes stresses and cracks appear creating blocks of ice that calve. These are marine grounding glaciers—their front end is in the sea forming an ice cliff 1000m high, 60m of that above the water (ice is not strong enough to support more than 60m.)

What is causing the melting/calving is warm currents from the oceans around the Southern Ocean: South Atlantic, Pacific and Indian Oceans, these lap the below surface ice cliffs until the ice above collapses and calves off.

If the PIG—Pine Island Glacier—substantially collapses and calves off then the Thwaites Glacier will go as well, followed by the rest of the WAIS. Consequent large increase in sea levels. Unless we accept responsibility and decarbonise the global economy. Will still have massive ice melt/sea level rise unless we can also remove CO2 from the atmosphere, reduce it to 320-ish ppm.
We can't reduce to 320ish ppm 😂
 

HBS Guy

Head Honcho
Staff member
We could: grow algae, bibble CO2/air through. When algae at max growth, harvest, dry, compact, bury or pump as slurry into an old oilfield. Do some massive re-forestation, harvesting mature timber for permanent use in housing etc and replanting.

Just takes will.

Won’t happen in a generation, I agree. But planting a trillion trees a good start
 
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