According to a new study, the Iceberg Between 2000 and 2020, the Arctic exposed 2,500 kilometers of coastal and 35 “new” islands. Scientists examined Satellite images Over 1,700 iceberg caps in Greenland, Alaska, Canadian Arctic, Russian Arctic, Iceland and Swalbard in 20 years.
Your analysis shows it 85% of these glaciers retreatedFinding 1 on average23 kilometers per year from the new coast. According to Dr. Simon Cook, Professor of Environmental Sciences at the University of Tunay, it changes the character of “basis” Arctic terrain“In the study, published in the press’Climatic change‘Bhaktan’The acceleration of the shore of the glaciers associates with the increase in the sea and atmospheric temperature.
Most new beaches appear in Greenland
When global temperature increases, glaciers a Rapidly backlash. The bottom of the iceberg, called “terminus”, begins to melt, reduces the total length of the ice layer. Glaciers Sea finishing – which flows into the sea – usually exhibits new coastal areas when they melt.
From Satellite images In the 1,704 Marine completion of the northern hemisphere, researchers built the 2,466 -kilometer beach exposed between 2000 and 2020. The study shows Costa rhythm The newly discovered ones vary significantly from one region to another. According to the authors, only 101 icebergs They are more than half of the total length of the extra shore.
Two -thirds of the new coast They were located Greenland. In the northeastern country of the country, the fall of the Sacharya Istrom glacier evolved 81 kilometers of the new coastTwo times more than any other glacier of the study.
The shore of the icebergs exposed 35 new islands More than 0.5 square kilometers. The islands completely exposed or lost the continent with the continent. According to the study, the Marine heating And air, due to Climatic changeSea finishing is the main reason for the rapid mass loss of glaciers.
The new expression of the beach increases the detachment and the risk of tsunamis
Researchers warn ” Snowroom regression Not only does maritime shutdown change the landscape, but at the same time this is an indirect risk of local communities and economic activities in the coastal zone. “
Las Newly discovered beaches -A is called “Paragliel”- more likely to suffer from land, which may trigger “dangerous tsunamis.” The study examples Tsunami occurred in Greenland In June 2017, this caused significant damage to the infrastructure and the loss of human life.
“Paragraph beaches differ from other installed areas of the Arctic beach because these newly expressed areas have no time for Permafrost, which means they are Very easily eroded Due to the lack of frozen cement, the action of the waves, mass wear and other processes, “Professor Cook of Environmental Science Article ‘Natural Climate Change’. “So, they are expected to be very energetic.”
Threatening the safety of tourists
Teachers New research They point out that it raises safety risks to tourists who go to the coastal icebergs for their beauty and a large number of animals. “Tourism and camp activities are found on the beaches near the main glacier transport routes Threatened by the waves of the iceberg“They say.
“Besides Health and safety risks Combined with the extreme influences of the waves, the sea finishing icebergs can be made significantly by the beauty of the terrain when the terrain turns into terms of terrain. “
