Recents in Beach

Antarctic ice shelf is breaking up faster than expected

Antarctic ice shelf is breaking up faster than expected




Global warming is melting glaciers at  record levels and  now a new study finds that a fast-moving  glacier is on the verge of breaking up  and risking the rise of global sea  levels  even more researchers tracking the pine  island glacier in western antarctica say  that  it lost a fifth of its surface area  between 2017 and 2020  according to a study by university of  washington and the british  antarctic survey the floating ice shelf  on which the glacier sits  which acts like a cork in a bottle for  the glacier  has retreated by 12 miles  contrary to everywhere else around  antarctica there is there is warm ocean  water  sitting next to the ice that melts the  ice at its margin  and it releases friction at the base of  the ice and allows it to flow faster  into the ocean  um so the parting that we were working  on was that  uh if you seen the ice shelf which is  the extension of the ice sheet as the  ice blue the float  over the ocean if you see it you remove  friction on the side of the ice shelf  and so the itself is is buttressing the  flow of ice from upstream  much like the arches are buttressing a  cathedral  from falling down  researchers say that if the glacier  continues to break up  at the base it is currently maintaining  it will contribute to about  one and a half to two centimeters to  global sea level rise  if this happens scientists warn that the  consequences will be felt  globally  and the the big question is is the pace  going to accelerate as it has been doing  over the last  decades or is it going to stay flat or  is it going to  subside um and so the fact that we are  seeing  an acceleration and a new mechanism for  acceleration  is definitely not going in the you know  in the right direction so you know  give you an idea four centimeters to  global sea level  not look like much uh but that what that  means is that for example uh  uh flooding that would happen once every  ten years.

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