A giant iceberg broke off in Antarctica on the western side of the Ronne ice shelf. Now the large iceberg, named A-76, is sailing in the Weddell Sea, where Ernest Shackleton's Endurance drifted. A-76 measures 4320 square kilometers: 175 kilometers long by 25 kilometers wide.
Satellite images from the European Space Agency's Copernicus Sentinel-1 mission identified the glacier, the largest ever seen. Another iceberg, A-74, broke off the Brunt ice shelf on February 26. This is another direct consequence of the climate crisis.
The temperature of the oceans affects the melting of the ice: the most dangerous consequence for human life is the rise in sea levels.7 Some glaciers along the Antarctic Peninsula have undergone rapid disintegration in recent years.
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.
Melting of ices has accelerated over the past 20 years, and it has contributed to nearly a fifth of sea level rise. Their mapping in HD, published in Nature by an international team led by the University of Toulouse, will allow to improve models on climate change with which to predict future scenarios.
The glaciers present in Alaska and the Andes are the ones that have recorded the greatest losses in the last twenty years, while the Alpine glaciers hold the world record for the reduction of the average thickness, equal to about one meter per year.
Experts said the melting of glaciers involves the loss of important water reservoirs capable of helping agriculture and industry by buffering the scarcity of rainfall in dry periods. Furthermore, the melt water ends up in the seas, which are rising by 3.5 millimeters per year: a problem not only for cities like Venice, but also for the 11% of the world population who live in coastal areas that risk be submerged.