noun
Oceanic Anoxic Event; OAE
A technical term in geology and paleoceanography for periods in Earth's history when oceans became depleted of oxygen. Often abbreviated as OAE.
白亜紀には何度か海洋無酸素事変が発生した。
Several Oceanic Anoxic Events occurred during the Cretaceous period.
A compound of 海洋 (ocean), 無酸素 (anoxic, oxygen-free), and 事変 (event, incident). The term is a direct translation of the English 'Oceanic Anoxic Event'.