New data have forced scholars to reconsider the statement about the slow melting of the ice caps that are above sea level.
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An international team of researchers analyzed data from the satellites by the American company DigitalGlobe , and found that the ice complex of the Vavilov — left source of the glacier Garmo — daily reduced to approximately 0.3 meters. The paper was published in the journal Earth and Planetary Science Letters.
Ice caps, such as the Vavilov glacier, covering 777 square kilometers of Land. The melting of these glaciers could lead to an increase in Global sea level of 0.3 meters. New data obtained by environmentalists, suggests that they can melt faster than we expected.
Researchers examined data from the satellites of DigitalGlobe, and compared them to information the National geospatial intelligence Agency of the United States. They noticed that in 2010 began an accelerated slide cap of the glacier, and in 2015 it acquired the maximum speed for the foreseeable period.
The researchers suggested that the movement started due to the fact that the lower part of the top is damp. The friction caused the melting of ice. The emergence of a large number of water increased the slide, whereby again there was water and the process repeated. In 2015, the surface was so slippery that the material could no longer stop the rapid decline. Today, the glacier slides with a speed of five to ten meters per day.
To accelerate the Vavilov glacier had advanced two kilometers and lost the volume size of 1.2 cubic kilometres. One year after accelerating from 2015 to 2016, he has moved four kilometers and lost a 4.5 cubic mile of ice. This amount is sufficient to cover the water layer with a height of two and a half centimeters to the entire state of Washington. These data clearly refute the established theory that the ice caps are above sea level, slow to respond to climate change. According to the authors, the rapid melting of the glacier Vavilov indicates that the same reaction can be followed in Antarctica and Greenland.
In July, scientists captures the separation of the iceberg with a length of about six kilometers from the HELHEIM glacier in Southeast Greenland. Video improved knowledge about the degradation of glaciers and how it affects the ocean level.