Benthic foraminifera of surface sediments in the Arctic Ocean

The Recent distribution of living and dead benthic foraminifera of the Arctic Ocean proper has been examined in surface sediments that were sampled during the International Arctic Ocean Expedition 1991 (Arctic 91). The samples represent the Amundsen and Nansen Basins, the Morris Jesup Rise, and the Yermak Plateau from 90°N to 79°42.4'N, 05°15.6'E. Due to the technical difficulties of deep-sea drilling in the Arctic Ocean these areas have, until now, been investigated only in very low density sampling. The Arctic 91 sites of this study cover a water depth range between 552 and 4375 m and represent three sites which are seasonally ice-free, although not yearly, while the other sites are characterized by permanent sea-ice. […]

本研究针对北冰洋主体海域现代死活底栖有孔虫（benthic foraminifera）的空间分布特征，基于1991年国际北冰洋考察队（Arctic 91）采集的表层沉积物样品展开了系统分析。本次采样范围介于北纬90°至79°42.4′、东经5°15.6′之间，覆盖阿蒙森海盆、南森海盆、莫里斯·杰普海岭与叶尔马克高原。受北冰洋深海钻探的技术限制，此前上述海域仅开展过极低密度的采样调查。本研究的Arctic 91站位水深区间为552至4375米，其中3个站位为季节性无冰海域（并非常年无冰），其余站位则以常年海冰覆盖为特征。[…]