白头山(即长白山)即将喷发

A volcano in North Korea is at risk of erupting, according to scientists.

科学家表示，朝鲜一火山目前有喷发的危险。

Scientists say Mount Paektu, on the border of North Korea and China, had one of the largest eruptions in history. That eruption took place around the year 946.

科学家表示位于中朝边境的白头山(即长白山)史上曾有过大规模的喷发。那次火山爆发发生于约946年。

In 2013, researchers placed seismometers on Mount Paektu. These meters measured seismic waves beneath the volcano. Seismic waves are waves in the earth produced by an earthquake.

2013年，研究人员把地震检波器放到白头山，测量火山地下的地震波。地震波是由地震产生的到达地面的波段。

The volcano had been quiet until 2002. Then earthquakes started until 2005. Now, scientists have discovered soft and melted rock beneath Mount Paektu. They say magma is rising to the surface, and that proves the volcano is active.

该火山直到2002年都没有要喷发的迹象。2005年发生地震。目前，科学家在白头山地下发现柔软和已融化的岩石，并表示岩浆已到达地表。这证明火山现在很活跃。

The U.S. State Geological Service defines an active volcano as any volcano that has had at least one eruption during the past 10,000 years.

美国国家地质调查局将在过去1万年内发生过至少一次喷发以上的火山定义为活火山。

Mount Paektu is the tallest mountain in North Korea. Its elevation is close to 2,700 meters.

白头山是朝鲜最高的山，海拔约为2700米。

The information from the study was published in Science Advances journal.

该消息来自于科学杂志。

North Korean Volcano Waiting to Blow

A volcano in North Korea is at risk of erupting, according to scientists.

Scientists say Mount Paektu, on the border of North Korea and China, had one of the largest eruptions in history. That eruption took place around the year 946.

In 2013, researchers placed seismometers on Mount Paektu. These meters measured seismic wavesbeneath the volcano. Seismic waves are waves in the earth produced by an earthquake.

The volcano had been quiet until 2002. Then earthquakes started until 2005. Now, scientists have discovered soft and melted rock beneath Mount Paektu. They say magma is rising to the surface, and that proves the volcano is active.

The U.S. State Geological Service defines an active volcano as any volcano that has had at least one eruption during the past 10,000 years.

Mount Paektu is the tallest mountain in North Korea. Its elevation is close to 2,700 meters.

The information from the study was published in Science Advances journal.

I’m Jim Dresbach.

Words in This Story

erupt – v. to send out rocks, ash and lava in a sudden explosion

seismometer – n. an instrument that measures and records details of earthquakes, such as force and duration.

seismic waves – n. elastic waves in the earth produced by an earthquake

magma – n. hot liquid rock below the surface of the Earth