(Table 1) Radiocarbon ages of Bivalvia shells obtained from core ASV13_1157, Novaya Zemlya Trench@en

It is shown that sediments accumulated in the Southern Novaya Zemlya Trench at both deglaciation and marine stages. Permanent sea ice sheet existed during the deglaciation, and glacier meltwater was intensely delivered to the bottom layer. Along with the dominant sediment supply from the Southern Island of Novaya Zemlya, southern continental sources also played a noticeable role at that stage. Seasonal sea ice freezing led to the formation of cold brines at the marine stage. Like paleoproductivity, these processes were irregular. Dissolution of calcareous benthic foraminiferal tests considerably intensified after about 7 ka BP owing to a stronger Atlantic water advection into the Western Arctic and consequent increase in paleoproductivity, whereas the relative role of southern sedimentary provenances decreased. Sedimentation rates were constant (45 cm/ka) during the entire marine stage.研究表明，新地岛南部海槽（Southern Novaya Zemlya Trench）在冰消期与海相阶段均有沉积物堆积。冰消期该区域存在永久海冰盖，冰川融水被强烈输送至底层水体。除新地岛南部岛屿作为主要沉积物供给源外，南部陆源物质在该阶段也发挥了显著作用。海相阶段，季节性海冰冻结会形成冷卤水。与古生产力的变化特征一致，上述过程均呈现不规则性。约7 ka BP以来，随着大西洋水平流进入北极西部的强度增强，古生产力随之提升，钙质底栖有孔虫壳体的溶解作用显著加剧，而南部沉积源区的相对贡献则有所下降。整个海相阶段的沉积速率保持恒定（45 cm/ka）。