|Cover Image courtesy of Denise Holland.|
Researchers Capture Long Ice Sheet Collapse Into The Sea In Greenland
Researchers have caught on video a four-mile chunk of ice splitting far from an ice sheet in eastern Greenland, an occasion that focuses on one of the powers behind the worldwide ocean level ascent.
The resulting chunk of ice, severed from Greenland’s Helheim Glacier, would extend from lower Manhattan up to Midtown in New York City.
“Global sea-level rise is both undeniable and consequential,” observes David Holland, a professor at NYU’s Courant Institute of Mathematics and NYU Abu Dhabi, who led the research team. “By capturing how it unfolds, we can see, first-hand, its breath-taking significance.”
The video indicates the ocean level ascending as the ice from the glacier enters the sea:
This marvel, otherwise called calving (the severing of vast squares of ice from a glacier), may likewise be informational to researchers and policy makers.
“Knowing how and in what ways icebergs calve is important for simulations because they ultimately determine global sea-level rise,” adds Denise Holland, the logistics coordinator for NYU’s Environmental Fluid Dynamics Laboratory and NYU Abu Dhabi’s Center for Global Sea Level Change, who filmed the calving event. “The better we understand what’s going on means we can create more accurate simulations to help predict and plan for climate change.”
The calving occasion caught on video started on June 22 at 11:30 p.m. local time and occurred over around 30 minutes (the video has condensed the time of this occurrence to approximately 90 seconds).
The video delineates a tabular, or wide and flat, ice sheet calve off and move far from the glacier. As it does as such, thin and tall chunks of ice—otherwise called glacier bergs—calve off and flip over. The camera edge at that point movements to indicate development additionally down the fjord, where one tabular ice sheet collides with a second, causing the first to split into two and flip over.
“The range of these different iceberg formation styles helps us build better computer models for simulating and modeling iceberg calving,” explains Denise Holland.
A 2017 estimate suggested that a collapse of the whole the Western Antarctic Ice Sheet would bring about a 10-foot-rise in ocean—sufficiently level to overpower coastal regions around the world, including New York City.
|Credit: Google Earth; Image courtesy of Denise Holland|
Up until this point, the Thwaites Glacier, a piece of the Western Antarctic Ice Sheet that has officially depleted a mass of water that is generally the measure of Great Britain or the state of Florida, has represented around 4 percent of worldwide ocean level rise — a sum that has doubled since the mid-1990s.