So one of the things thought of in the '80s was to go back and take cores of coral heads throughout the Galapagos and find out how often was there a devastating event.
そこで 80年代に考えられたのは ガラパゴス中のサンゴの 頭部の芯を取り出して 壊滅的な現象の回数を調べるということです