【英语时差8,16】地幔（下）

（单词翻译）

Now, however, with the help of sophisticated computers, scientists have discovered what seem to be superplumes, more intense thunderstorms, if you will. The computers produced 3D images of the mantle¹ that suggest the existence of a superplume under Africa and possibly another one under the Pacific. Some scientists suggest that these superplumes may be responsible for the strange shape of the Hawaii-Emperor seamount chain on the floor of the Pacific Ocean. This long chain of undersea mountains, formed over time as the crust moved across a hot spot in the mantle, makes a sharp 45 degree turn around Midway Island. The scientists propose that these superplumes may be responsible for pushing the crustal plates almost to the point of making them reverse directions.