Thursday, November 26, 2015

If all of East Antarctic Ice Sheet melted it would increase sea levels by 50-meters


#climatechange #globalwarming #EastAntarctica #TottenGlacier Warning has been given that melting of the East Antarctic Ice Sheet due to global warming will increase the level of oceans by as much as 50-meters and this is alarming. This has been revealed by another major study that has highlighted the alarming potential impact of climate change on the East Antarctic Ice Sheet which is also known as the vast "sleeping giant" of the frozen continent.
This has been reported in nzherald.co.nz dated 27 November 2015.
The EAIS makes up much of Antarctica and has long been regarded by scientists to be much more stable when compared with the smaller, 25 million square kilometre West Antarctic Ice Sheet. Satellite measurements have estimated that the West Antarctic Ice Sheet was losing more than 150 cubic kilometres of ice each year.
Satellite observations have also indicated that certain parts of the EAIS were currently thinning in response to a warming ocean. A recent Australian expedition reached the typically inaccessible Totten Glacier to gain some of the first direct evidence.
A conclusion can be drawn that the wider ice sheet's contribution to future sea level rise could be much greater than anticipated and, in the event of it melting, the EAIS would contribute an equivalent of around 50 metres of sea level rise.
The study was carried out by a New Zealand-led team - they studied rocks at different elevations beside the East Antarctic sheet, the research team came to the conclusion that a period of rapid glacier thinning occurred in the recent geological past, and has persisted for several centuries.
Till now, most of the research had focused on the West Antarctic Ice Sheet. Therefore, these observations from East Antarctica become all the more significant.

Image courtesy wikimediacommons.org)

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