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CNN英语新闻:美国地质调查局称圣海伦火山依然非常活跃

比目鱼 于2016-05-11发布 l 已有人浏览
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首先,它本质上是连接两个大陆之间的一座桥梁,又是欧洲和中东之间的一扇大门,而且还是进入地中海及其他海洋至关重要的入口。
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 CNN STUDENT NEWS starts right now! I'm Carl Azuz.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.It was dormant from the 1950s until 1980 when a massive eruption there blew a thousand feet off the top of the mountain and killed dozens of people and thousands of animals.Since then, it's had smaller explosions and quakes on and off every few years.Now, scientists say it's recharging.How do they know?Mount St. Helens has had an earthquake swarm, a spike in a number of small tremors over the past eight weeks.Seismologists have recorded more than 130 quakes recently and that's gotten their attention centered on one of the most closely monitored volcanoes on the planet.These have been incredibly small quakes.However, it's the frequency of them that has scientists kind of keeping a close eye on this.So, this is the area over the past seven days.

These blue squares that you see, those are the monitoring sites that they have out there.And then all of these dots, these are all of the earthquakes that have occurred in this region in the last seven days.Now, again, I want to point out, none of these have been huge.In fact, most of them have been at a magnitude of 0.5 or less.You and I can't even detect that, they're so small.Now, the maximum was around the 1.03.Again, very hard for humans to detect something of that small magnitude.Now, they all were very shallow, between about 1.2 to four miles in debt.
Now, basically what this means is, when you get these swarms, it's the repressurization of the magma that's in there and it kind of seeps through some of the cracks that are there and that's what causes a lot of these little mini earthquakes.But you want to keep in mind, this process can continue for years without interruption and that's what the experts are trying to make sure that people understand.They're not tossing any anomalous gases come out and they're not expecting an imminent eruption by any means.
 
The U.S. state of North Carolina and the U.S. federal government are suing each other.It has to do with the North Carolina law concerning access to public restrooms.Here's what happened:In March, North Carolina passed what's called the Public Facilities Privacy and Security Act.One thing the law does is require people to use the restroom that matches the gender listed on their birth certificates.The U.S. Justice Department argues the state law breaks a federal law because it discriminates against people who are transgender, people who identify with the different gender than the one on their birth certificates.So, last week, the government told North Carolina to, quote, "remedy" its law by Monday or that it would be in violence of people's civil rights and could face a government lawsuit.
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