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Larson B Ice Shelf In Antarctica To Disintegrate Within 5 Years

BarbaraHudson writes: A new study (abstract) from NASA scientists predicts an Antarctic ice shelf half the size of Rhode Island will disintegrate around 2020. The shelf has existed for roughly 10,000 years. "Ice shelves are the gatekeepers for glaciers flowing from Antarctica toward the ocean. Without them, glacial ice enters the ocean faster and accelerates the pace of global sea level rise." At its thickest point, the ice shelf remnant is a half kilometer tall, and spans approximately 1,600 square kilometers. "The glaciers' thicknesses and flow speeds changed only slightly in the first couple of years following the 2002 collapse, leading researchers to assume they remained stable. The new study revealed, however, that Leppard and Flask glaciers have thinned by 65-72 feet (20-22 meters) and accelerated considerably in the intervening years. The fastest-moving part of Flask Glacier had accelerated 36 percent by 2012 to a flow speed of 2,300 feet (700 meters) a year."

1 of 293 comments (clear)

  1. Re:Good thing climate change isn't real! by Anonymous Coward · · Score: 5, Interesting

    My understanding is that we are in an Interglacial Period and we would expect things to warm naturally.

    Hi, geologist here.

    Your understanding is wrong. Or at least you misinterpret it.

    We are indeed in an interglacial period, but were at the end of one before we fucked it all up. The warming period you expect happened 20-14 thousand years ago, and stabilized to what was the current climate between 10 and 6 thousand years ago. Indeed the stability of the climate over the last 10k years is widely credited with providing the right conditions for the development of agriculture and thus civilization. Those days are now done, what comes next is uncharted territory.

    But the relevant laws of chemistry and physics are indisputable, known since Fourier's time in the early 1800s, and immune to PR and politics. The fine details of second order and tertiary feedback effects will only ever tweak the result, those won't and can't overcome the basic fundamental gross effect dictated by physics.