jawagord wrote:Antarctica is 14,000,000 square kilometres of ice averaging 1.5+ kilometres thick, the hole in the Thwaites glacier is supposedly 2/3 size of Manhattan or 40 square kilometres. Do the math folks, doomsday sea level rise isn’t happening in your lifetime or your children’s or your grand children’s. Look at the map, Antarctica is the size of the US+Mexico, can you even identify Manhattan or Thwaites in all that expanse?
https://www.nasa.gov/mission_pages/iceb ... ca-US.html
Twaites is a bit more in extent as Manhattan is....
https://en.wikipedia.org/wiki/Thwaites_GlacierThwaites Glacier (75°30′S 106°45′W) is an unusually broad and fast Antarctic glacier flowing into Pine Island Bay, part of the Amundsen Sea, east of Mount Murphy, on the Walgreen Coast of Marie Byrd Land.[1] Its surface speeds exceed 2 km/yr near its grounding line, and its fastest flowing grounded ice is centred between 50 and 100 km east of Mount Murphy. It was named by ACAN[2] after Fredrik T. Thwaites, a glacial geologist, geomorphologist and professor emeritus at the University of Wisconsin–Madison.[3] Thwaites Glacier drains into West Antarctica’s Amundsen Sea and is closely watched for its potential to raise sea levels.[4]
Along with Pine Island Glacier, Thwaites Glacier has been described as part of the "weak underbelly" of the West Antarctic Ice Sheet, due to its apparent vulnerability to significant retreat. This hypothesis is based on both theoretical studies of the stability of marine ice sheets and recent observations of large changes on both of these glaciers. In recent years, the flow of both of these glaciers has accelerated, their surfaces lowered, and the grounding lines retreated.
Together with PIG it holds back a large part of the WAIS, that is enough to cause 2 to 3 meters of SLR.
Together with the GIS, totals about 10 meters SLR that can happen in a short period, stil decades though, but instant on a geological timescale. I think you mistook a part of Twaites Glacier crumbling into the ocean.
oops, sorry, the hole in end of Twaites measures bit less than Manhattan, I see the rest of Twaites and recent devellopments have been discussed already, so nothing new on this post, next time better
