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世界上已知的活火山大约有455座,其中深藏海底的约有80座。这许多活火山并不是均匀地分布在世界各地。火山和地震一样都是比较集中地分布在一些特定的地区。地球上现有的火山主要分布在两大火山地带。一个是环绕太平洋沿岸及其附近的岛屿的环太平洋火山带;另一个是沿
There are about 455 active volcanoes known in the world, of which about 80 are deep in the seabed. Many of these active volcanoes are not evenly distributed all over the world. Volcanoes and earthquakes are concentrated in some specific areas. The existing volcanoes on Earth are mainly distributed in two volcanic regions. One is around the Pacific Rim and its adjacent Pacific Rim volcano; the other is along the