According a study made by researchers from the University of California, there should be bubbles of warm water under the Arctic which are accelerating the melting of the ice. Researchers studied the currents that enter the Arctic Ocean from the Pacific Ocean and observed that the flow that penetrates has a higher temperature, about 7°C, than the temperature of the waters into which they flow which is, on average, 0°C.
The result of this study, published in the Nature Communication, describes the phenomenon by defining these pockets of water as submarine thermal bombs. The Arctic Ocean has a surface layer of cold and not very salty water that comes from rivers and glaciers that have now melted.
When the warmer and saltier water flow from the Pacific Ocean arrives, due to its greater density, it enters and flows below the colder Arctic layer thus creating these warmer pockets trapped in the underlying layer. Over time, the retained heat is gradually released towards the other, making the ice on the surface unstable.
Scientists did not understand how this process has long been underestimated.
Thwaites, the Antarctic glacier that threatens the earth
Thwaites, an incredible, gigantic Antarctic glacier, according to climatologists and glaciologists from The International Thwaites Glacier Collaboration, would pose a serious threat as its melting could happen faster than expected.
This is confirmed by the data collected thanks to an autonomous Ran submarine robot, sent by the same experts, which went to the site to obtain as much information as possible, including the temperature, salinity, strength and oxygen content of the currents.
oceanic that head and subsequently penetrate under the glacier. Scientists wrote: "A greater influx of hot water has emerged than previously thought, triggering concerns about faster melting and accelerating the flow of ice into the sea."
Thwaites covers about 120,000 square kilometers: the possible consequences of its dissolution at sea could be disastrous. The most serious effect would be represented by an early rise in sea levels around the globe of 65 centimeters, with serious risks especially for the inhabitants who live in the coastal areas of Florida, the Pacific islands, Southeast Asia, but not only.