他们比较了取自火山爆发期次的喷发早期的火山灰和取自典型火山喷发的喷发后期的火山灰。

They compared ash that was ejected in the early, explosive phase of the eruption with ash from a later, more typical eruption of the volcano.

youdao

这座火山于冰河世纪进入活跃期，最后一次喷发是在1986年。

The volcano became active during the glacial period. The last eruption was in 1986.

youdao

这座火山于冰河世纪进入活跃期，最后一次喷发是在1986年。

The volcano became active during the glacial period.The last eruption was in 1986.

youdao