【特稿】世界最大冰山解体

Group 1 - The A23a iceberg, which has been the largest iceberg in the world for nearly 40 years, is rapidly disintegrating due to warm seawater, with researchers predicting it may become unrecognizable within weeks [1][2] - The A23a iceberg originally measured 3,672 square kilometers and weighed nearly 1 trillion tons, but recent satellite images indicate it has shrunk by more than half, now covering an area of 1,770 square kilometers [1][2] - Large ice chunks, some as big as 400 square kilometers, have recently broken off from A23a, posing a threat to passing ships [1] Group 2 - Since breaking off from the Filchner Ice Shelf in 1986, A23a was grounded on the seafloor for over 30 years before starting to drift north around 2020 due to melting ice [2] - The iceberg has recently been drifting at a notable speed, sometimes moving up to 20 kilometers in a single day [2] - As A23a disintegrates, the D15a iceberg, measuring approximately 3,000 square kilometers, has become the largest iceberg in the world, with A23a now in second place [2]