The melting of the Eurasian ice sheet was restricted to 500 years

Scientists using simulation found that the Eurasian ice sheet, which is 20 thousand years ago covered all the Northern part of Eurasia, disappeared in less than 500 years. This glacier is the size comparable to the modern West Antarctic ice shield, so the experts will be able to adjust their forecasts about the melting of the ice of Antarctica and raising the level of the World ocean: these events can happen in the next hundred years. The results of a study published in the journal Nature Geoscience.

20 thousand years ago the entire Northern part of Eurasia covered by the Eurasian ice sheet, three times surpassing the size of the modern ice sheet of Greenland. Later, 13,5-14,7 thousand years ago, there was a period of a rapid rise in ocean levels due to melting glaciers, which represent Meltwater Pulse 1A (the”meltwater pulse 1A”, MWP1a). The Global sea level at that time rose to 40-60 mm per year and eventually rose to tens of meters. Meltwater flowed into the ocean from glaciers, but what exactly — remains unclear. Glaciologists believedthat the Eurasian ice sheet was melting for several thousand years and has almost disappeared by the beginning of MWP1a, therefore, could not significantly affect this short-lived (in geologic terms) event.

Scientists led by Joe Brendryen (Jo Brendryen) from the University of Bergen doubted the innocence of the Eurasian ice sheet to sea-level rise and fashioned it melting in the period MWP1a, and within a few thousand years before him. They obtained data by using radiocarbon Dating of cores of bottom sediments of the Norwegian sea is allowed to recreate the picture of the freshwater input and glacial deposits from the surface of the glacier in the marine strata.

Leave a Reply

Your email address will not be published.