Should we stress about the massive new iceberg?
Earlier this month, a Delaware-sized iceberg broke the Larsen C ice shelf in Antarctica and floated into the sea.
It was not the first time that a piece of the Larsen platform had been cut off, and probably not the largest iceberg ever, but the massive disruption and spectacular images of the 120-mile crack formed captured the public’s imagination and made the titles in all the world.
The case looked like many of them were impressive and frightening warning of climate change.
Sean Mackay, a postdoctoral fellow at Boston University and a member of the Antarctic University Research Group, the continent traveled six times in the past nine years to collect information on climate change beyond buried glaciers and other sources Of old ice.
We are talking about what iceberg calving might mean for the future, and what role it might play in sea-level rise. “Sometimes,” he said, “you have to get people’s attention to the events.”
In fact, I do not know, but the immense Antarctic circumpolar power of the sea, and if iceberg can reach this current, can be divided into small pieces and begin to flow north and east.
Some estimates say it could reach the Falkland Islands. But when I say “that”, I mean a piece of it, not all. So it will not float in North America.
Shelves are floating. This is the definition of an ice shelf: it floats in the ocean.
Therefore, the closet, whether or not connected to the Antarctic Peninsula, will help at any level of the sea.
The reason that ice shelves are important, however, is that they are essentially a cork, which helps prevent the flow of ice outward from the interior areas.
And Antarctica has an equivalent amount of sea level rise in the form of frozen fresh water, so when these shelves begin to disintegrate, and especially if they disintegrate beyond a point of no, these glaciers can flow more easily.
And the old shelves collapsed Larsen A and Larsen B, which could know firsthand – and measure directly – how fast the upstream glaciers have accelerated. And that is a lot. It depends on three to five times faster.