The ice rivers return in the Arctic and display new coasts that can lead to Tsunamis

According to a new study, Ice reduction Exposed 2500 km from the coast and 35 “new” islands in the Arctic between 2000 and 2020. Scientists examined Satellite pictures Among more than 1700 Greenland’s Green Mountain Cubs, Alaska, Canadian North Pole, Russian Arctic, Iceland and Svald during that period of 20 years.

Your analysis shows that 85 % of these glaciers decreasedDiscover average 123 km from the new coast to a year. According to Dr. Simon Cook, Professor of Environmental Sciences at the University of Dunda, this “changes the nature Landscape in the Arctic“The study, published in the magazine”Nature climate change‘It relates to the speedy melting of ice with an increase in peripheral temperatures and atmosphere.

Most of the new coasts appear in Greenland

With an increase in global temperatures, the ice rivers face a Rastness increasingly. The base of the iceberg, known as “terminus”, begins in melting, which reduces the total length of the ice layer. Icebergs The termination of the marine termination – which flows into the ocean – usually reveals new coastal areas when it melts.

from Satellite pictures Of the 1,704 marine ice rivers in the northern hemisphere, the researchers presented 2,466 km from the coast that was exposed between 2000 and 2020. Costa rhythm Recently discovers a great difference from one region to another. According to the authors, only 101 glaciers They were responsible for more than half of the total length of the additional coast.

Two -thirds of the new coastal line They were in Greenland. Decrease from the ice -out zakaria Eysterom, in the northeast of the country, formed 81 km from the new coastMore than twice any other ice river from the study.

Also, the ice melting of the ice rivers is exposed 35 new islands From more than 0.5 square kilometers. These islands were completely exposed or lost their ice contact with the continent. According to the study, Ocean heating And the air caused by ClimateIt is the main cause of the loss of fast mass of ice rivers.

The new exposure to the coast increases the risk of separation and tsunami

Researchers warn of this. Ice rivers Naval termination not only changes the landscape, but at the same time an indirect danger to local societies and economic activities in the coastal region. “

Las Newly discovered coasts Known as “partial”- more vulnerable to Earth, which can lead to “dangerous tsunami”. The study is highlighted Tsunami in Greenland In June 2017, causing significant damage to infrastructure and loss of human life.

“The coast of the paragraph differs from the other areas in force in the Arctic coast because the frosty soil will not have time to develop in these newly unveiled areas, which means that they are so Easily erosion Due to the work of the waves, wearing the mass and other operations due to the lack of frozen cement. condition For “Nature Climate Change”. “Therefore, it is very dynamic.”

The potential threat to the safety of tourists

Author New search They point out that this also raises the risk of safety for tourists who go to coastal ice areas to their beauty and abundant animals. Tourism and camping activities are seen on the coast near the main iceberg transportation methods Eclipse waves threatenedThey say.

“regardless of Health and safety risks Associated with the severe effects of waves, the tourism industry can be heavily committed through the picturesque beauty of the landscape when marine ice rivers turn into elements of terrestrial termination. “