Glaciers melt, and A68, the largest iceberg on earth, is about to break away from the South Pole. How big is its area?

With the intensification of global warming, the Antarctic continent seems to be fragile. In recent years, a large number of glaciers have melted into the ocean. As we all know, Antarctica has preserved the largest glacier on the earth.

once these glaciers melt, it will cause irreversible changes to the global sea level. however, some scientists have warned that ——A68, the largest iceberg on earth, is about to break free from the shackles of the Antarctic continent, drift into the sea along the ocean current and finally melt completely! Antarctic Glacier

In Antarctica, glaciers are actually frozen rivers. The huge land ice on the ice sheet flows slowly to the ocean through glaciers. The glaciers are similar to a fulcrum, supporting the huge ice sheet. If the glaciers completely collapse, it may lead to a large amount of land ice tilting down, resulting in a rapid rise in sea level. A68 Iceberg

A68 Iceberg is the largest iceberg in the world. It fell off Antarctica in 217, with an area of 6, square kilometers, equivalent to the area of Shanghai, China. This iceberg has fallen off the Antarctic continent for more than a year, and almost no displacement has occurred.

according to NASA satellite images, it was not until 219 that the A68 iceberg slowly drifted away from the Antarctic continent under the influence of air currents and ocean currents. However, because it is still located in the Antarctic circle, its area has not changed much.

However, scientists are still very worried that the iceberg A68 will be far away from the South Pole one day, so many satellites in the world are watching it. But according to the current observation, A68 is accelerating its movement and its area is shrinking.

According to the latest report of Russian satellite, during the movement of iceberg A68, it is very likely that it will collide with South Georgia Island, which is the habitat of seals and penguins. If they collide, most creatures here will be in danger.

not only that, what worries researchers most is that with the gradual melting of A68 iceberg, local ocean salinity will be abnormal, ecosystems will be destroyed, and global sea level will rise.

Under the influence of global warming, glaciers in Antarctica are constantly collapsing, and A68 is not the largest iceberg in Antarctic history.

In 2, an iceberg with an area of 11, square kilometers floated in Antarctic waters for 2 years, and now there is only about 2 square kilometers left floating near the South Sandwich Islands (a volcanic island group in the southern South Atlantic, British).

Scientists infer that it will take 2 years or more for the A68 iceberg to melt completely. Antarctic

scientists under global warming used satellite images to analyze the changes of Antarctic sea ice in the past 4 years. The results showed that the Antarctic sea ice area reached its maximum in 214, about 12.8 million square kilometers, and then it declined sharply in the next three years, setting a record low of 1.7 million square kilometers in 217. The years after 214 were the years when the concentration of carbon dioxide in the atmosphere rose.

At present, not only the South Pole, but also the North Pole is hard to protect itself. It can be said that the sea level is rising at a rate of 8 mm per year due to the melting of glaciers at the two poles of the earth. Although this figure does not seem large, the impact is enormous.

From 1993 to 214, the sea level has risen by 66 mm, which is about 3 mm every year. If it continues to develop at the current speed, or even faster, it is possible that coastal cities like new york will be submerged by the end of this century. Summary

In fact, the present development can be regarded as a warning from nature. After all, the present environment of the earth has been riddled with holes, and the environmental and climate problems have become commonplace. However, few people can really persist in maintaining the earth's ecological environment.

In this case, everyone has forgotten that each of us lives on the earth, and each of us should have the responsibility to love and protect it.

Because only by living in harmony with the earth can mankind have a longer future, we must protect the environment, strive to improve the global warming problem and create a better future together!