火山数月的不稳定预示其即将爆发

Months of volcanic¹ restlessness（不安定） preceded（在前面） the eruptions² this spring of Icelandic volcano Eyjafjallajökull, providing insight into what roused（唤醒） it from its centuries of slumber³（睡眠） . An international team of researchers analyzed⁴ geophysical（地球物理学的） changes in the long-dormant volcano leading up to its eruptions in March and April 2010. In a study published in the Nov. 18 issue of the journal Nature, the scientists suggest that magma（岩浆，糊剂） flowing beneath the volcano may have triggered its reawakening. #

"Several months of unrest preceded the eruptions, with magma moving around downstairs in the plumbing⁵ and making noise in the form of earthquakes," says study co-author Kurt Feigl, a professor of geoscience at the University of Wisconsin-Madison. "By monitoring volcanoes, we can understand the processes that drive them to erupt."