In the paper the histroy of spreading of Darke Passage and its effects on Antarctic circumpolar current are discussed basing on the geophysical data obtained during first Chinese Antarctic Expedition.

• 本文利用首次南大洋考察期间获得的德雷克海峡地球物理场资料；解释海峡海底板块扩张历史以及海峡扩张对南极环境形成的影响.