Huge cracks developing in Greenland ice sheet, threaten rise in sea level

 result of climate change was revealed by drone shots during a recent study led by Cambridge University showing cerulean blue lake consisting of glacial meltwater on surface of Greenland ice sheet. Proceedings of National Acemy of Sciences of United States presented observations of supraglacial lake drain on December 2 which gave in-situ ims of Greenland glaciers which were previously unkwn. However, in June 2018, Greenland became world's tallest waterfalls in just a course of five hours. 

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For recent research, scientists were equipped with aerial drones. This high-tech equipment helped to witness partial lake drain and might help researches to better understand how surface melting of ice sheet affect its melt rate and threaten rise in sea level. new study has determined that researchers are underestimating number of melt ponds which develops each year partially and rapidly. 

findings also furr suggest that scientists need to tweak computer models which are used to predict rise from Greenland. Also, this was first study disclosing that lake drain can occur through cracks in ice rar than or mechanisms. 

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Alarming lake drain

expanding fractures cause alarming lake drains, during which huge quantities of water are being transferred to below surface of ice. Researchers have also recorded changes in ice flow at an escalated speed than were previously considered possible. Greenland ice sheet covers nearly 1,710,000 square kilometres which are at least 80 per cent of surface of Greenland. As wear warms each year, reportedly thousands of caverns which are also kwn as 'moulins' are formed on surface of ice through which water descends to bottom and increases sea level. Through this descend of water, massive waterfalls are created down depth of ice sheet which can nearly be around one kilometre thick. 

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(With inputs from ncies)