火山爆发及其伴生的地震、海啸是我们这个星球上惊天动地的自然现象。火山爆发虽然给人类带来了一定的灾难 ,但同时也充满神奇性、观赏性、知识性和趣味性。它不仅对人们有极强的吸引力 ,也给人类带来不可多得的收获。火山究竟是怎样形成的 ?火山分布有何规律 ?研究火山的重要 Volcanic eruptions and associated earthquakes and tsunamis are earth-shaking natural phenomena on our planet. Although volcanic eruptions have brought a certain disaster to human beings, they are also full of magical, entertaining, informative and interesting. It is not only attractive to people, but also brings rare benefits to mankind. How did the volcano formed? What is the law of volcano distribution? It is important to study the volcano