Warming of Swiss permafrost continues unabated
22
February, 2016
Unremittingly
high temperatures are continuing to take their toll on Swiss
permafrost and glaciers, according to the latest scientific research.
The permanent ice covering on Swiss mountains is melting while rock
glaciers are moving several metres a year.
The
latest findings from the Swiss Permafrost Monitoring Network (PERMOS)
reveal that the warming trend of the last seven years continues
unabated. This has been ascertained by measuring the temperatures of
permafrost at 30 borehole sites.
The
permafrost in Corvatsch, near to St Moritz, has increased in
temperature from -1.5 degrees Celsius to -1 degrees since 2009. The
permanent ice covering on the Stockhorn, in the Bernese Oberland, has
now been measured at -2 degrees, compared to -2.5 degrees in 2009.
PERMOS
said that the increased ice temperatures were the result of several
years of warmer conditions than normal, not just the unusually hot
summer of 2015. Researchers also observed higher quantities of pooled
ground water, hinting at the permafrost melting.
The
speed of movement of rock glaciers increased 20% in 2014-2015
compared to the previous recordings. Such glaciers are now moving at
a faster rate than at any time since recordings began in 2000.
The only unlikely silver lining comes in the shape of the late snowfall in Switzerland this winter. This allowed the ground to cool off faster because it did not have such a thick covering of insulating snow, PERMOS said.
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