Researchers have discovered that the Greenland ice sheets are broken quickly as the climate change reacts.
This warning is conducted on a new large -scale study of the Greenland Ice Seat Crevas, the second largest ice body in the world.
Scientists led by the Dalam University discovered that the size and depth of Kurebus have increased significantly due to the fast -ice edges of the ice sheet for five years from 2016 to 2021, using a 3D surface map. did.
They hope that their discovery enables scientists to build ice damage and the effects of crevas and predict the future behavior of Greenland ice sheets.
Climate change is accelerating rapidly in Greenland
In Greenland, the increase in crevas is faster than previously detected. Crebus is a wedge -shaped fracture or crack opened in a glacier where ice begins to flow faster.
Researchers are places where ice is faster due to climate change, and the crevas is larger and deeper, which has the mechanism behind the loss of ice from the greenland ice let. He says that it may be speeded up.
Greenland has been about 14 mm behind the sea surface since 1992. This is because it melts from the surface of the ice according to the warm temperature, and the ocean temperature reacts warmly, increasing the flow of ice to the ocean. It is driven by climate change.
Greenland contains enough ice to add a 7 -meter sea level to the world when the entire ice sheet is melted. Survey has shown that Greenland can contribute to up to 30 cm in the sea level by 2100.
The 3D surface map of the Greenland Ice Seat reveals amazing information
In this latest study, researchers identify more than 8,000 3D surface maps created from high -resolution satellite images to identify the cracks of Greenland ice lips, and between 2016 and 2021. It has shown how the crabas has evolved as a whole.
At the edge of the ice sheet where a large ice river meets the sea, it has been revealed that the acceleration of the glacier flow speed is related to the significant increase in the amount of crevas. This was up to 25 % in some sections.
These increases were offset by the decrease in Crevas at the Greenland’s fastest glacier, Sermeq Kujallleq, and was temporarily slowed down during the research period.
As a result, the total change in the total change of the crabs per ice sheet during the survey period was 4.3 %.
However, the flow speed of SERMEQ KUJALLEQ has begun to increase again. This suggests that the balance between the growing and closing of the ice sheet has ended.
Future of ice sheet loss
Dr. Tom Chardley, the early carrier fellow of the Geographical Faculty of Geography at the Dalam University, said: This is because the glacier accelerates according to the warm ocean temperature, so the melted water -filled crevas may force the fracture deep into the ice.
“However, there have been no data to indicate how fast this is happening in the Greenland ice sheeth as a whole.
“In this dataset, you can see that the crevas field is not just extending to the ice sheet, as previously observed. Changes are dominated.
The increase in crevas may speed up ice loss from Greenland.
“As Crevas grows, the glacier of the ice sheet moves faster, driving water, driving water, driving water, and driving water inside, driving water inside. Cultivates the mechanism to driven to the sea to the sea.
“These processes can speed up ice flow and lead to deeper crevas formation. This is a domino effect that promotes ice loss from greenland at a faster pace.”
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