Saturday Reading

1a

“Even in winter, strong winds can prevent the water beyond the shelf from freezing, so it is unclear whether the front will separate soon or hang on like a loose tooth,” NASA said.

Although the ice shelf’s collapse may sound catastrophic, IFLScience noted, there are two points worth considering:

“Firstly, ice shelves make up around 75 percent of the Antarctic coastline, and their total combined area is equivalent to 1.56 million square kilometers (603,000 square miles). If all of Nansen collapses, it will reduce Antarctica’s ice shelf coverage by just 0.1 percent.

Nansen doesn’t even register as a ‘major’ ice shelf, with those such as Ross, at around 472,000 square kilometers (182,000 square miles), dwarfing it. The Ross Ice Shelf partly collapsed at the end of the last ice age around 10,000 years ago, when a colossal chunk 280,000 square kilometers (108,000 square miles) in size fell into the sea over 1,500 years. That’s 360 times the size of Manhattan Island, by the way.

Secondly, these ice shelves may be anchored to the land, but they do not actually significantly contribute to sea level rise—after all, they’re already floating on the sea. So the collapse of Nansen by itself won’t cause much harm, per se.

However, ice shelves like Nansen do act as vast barricades for glaciers behind them. When an ice shelf is removed, glaciers begin to tumble into the sea at surprisingly fast speeds—sometimes moving ten times faster than normal—and these will definitely cause the sea level to rise. So in effect, man-made climate change is breaking Antarctica’s huge ice dams.

@ ECOWATCH

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About Den

Always in search of interesting things to post. Armed with knowledge and dangerous with the ladies.
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10 Responses to Saturday Reading

  1. jimhitchcock says:

    New Rule: Child psychologists have to explain why Ted Cruz smiles like someone who is both ashamed and proud of pooping his pants.

  2. Den says:

    Smells like it is still there too, that man stinks!

  3. jimhitchcock says:

    I’m about to approach my 500th comment on DWF. Does that mean my free trial is about to end?

  4. David B. Benson says:

    @ the local pizza parlor after 39 minutes of stick walking up to Terre View Drive bridge and then back to the pizza place. Saw 6 Canada geese in 2 vees wheel into some trees for the night after one honked. Then a solitary bird in the same hrove. A juvenile Swainsen’s hawk flew up looking for a last meal for the day. While not an expert glider it did land in a field and stayed there for several minutes before flying back to a tree for the night. Lastly a small flock settled in the trees further on.

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