Mount Saint Helens is the most active volcano in the continental US.

圣海伦斯山是美国大陆最活跃的火山。

This is an example of volcanic ash from Mount St. Helens, 1980.

- 这是 1980 年圣海伦斯火山的火山灰示例。

Mount St. Helens delivered the deadliest and most economically destructive volcanic event in US history.

圣海伦斯山发生了美国历史上最致命的和最具经济破坏性的火山事件。

[Maiya] And there's just too many volcanoes to monitor as closely as Mount St. Helens.

- [Maiya] 还有太多的火山需要像圣海伦斯火山一样密切监测。

By the way, did you know that the world's newest glacier is growing inside of Mount St. Helens?

顺便问一下，您知道世界上最新的冰川正在圣海伦斯山内部生长吗？

But Compton-Belkovich is different, resembling certain volcanoes on Earth, like Mount Fiji and Mount St. Helens, that spew more viscous lava.

但康普顿-贝尔科维奇不同，它类似于地球上的某些火山，如斐济山和圣海伦斯火山，喷出更粘稠的熔岩。

But on the morning of May 18, 1980, the challenge that nature delivered was a singular shock, the eruption of Mount St. Helens.

但在 1980 年 5 月 18 日上午，大自然带来的挑战是一次奇异的冲击，即圣海伦斯火山的喷发。

Magma rich in silica is more viscous and can trap gases, leading to explosive eruptions, as seen in stratovolcanoes like Mount St. Helens.

富含二氧化硅的岩浆更加粘稠，可以捕获气体，导致爆炸性喷发，如圣海伦斯火山等成层火山中所见。

The U.S. Geological Survey says Mount St. Helens is still very much alive. The volcano sits in the Cascade Mountains in southwestern Washington state.

美国地质调查局表示，圣海伦斯山仍然非常活跃。这座火山位于华盛顿州西南部的喀斯喀特山脉。

This is called an explosive eruption and we've seen it with Mount Etna in Sicily and Mount Saint Helens in the U.S. Explosive volcanic eruptions can be dangerous and deadly.

这称为爆发性喷发，我们在西西里岛的埃特纳火山和美国的圣海伦斯火山看到过这种情况。爆发性的火山喷发危险且致命。

He pointed out that St. Helens didn't have an open vent, as Hawaiian volcanoes have, so any pressure building up inside was bound to be released dramatically and probably catastrophically.

他指出，圣海伦斯火山没有夏威夷的火山那样敞开的喷发口，因此积聚在里面的压力势必要戏剧性地，很可能是灾难性地释放出来。

His evidence comes from electromagnetic surveys carried out on some 40 volcanoes, including Mount Fuji in Japan, Mount St Helens in America and others in Bolivia, New Zealand, the Philippines and elsewhere.

他的证据来自于对约40座火山进行的电磁调查，其中包括日本的富士山、美国的圣海伦斯火山以及玻利维亚、新西兰、菲律宾等地的其他火山。

Therefore the government volcanologists called in to monitor and forecast St. Helens's behavior primarily had seen only Hawaiian volcanoes in action, and they, it turned out, were not the same thing at all.

因此，大多数被召集来监测和预报圣海伦斯火山活动的政府火山学家，只见过夏威夷的火山喷发。结果证明，二者根本不是一回事。