(Table 1) Age determination of sediment core 56-10-36

Sea surface temperature and salinity estimates reconstructed from a core collected on the Barra Fan, northwest Scotland (56°43'N, 09°19'W; water depth 1320 m), show a series of rapid oscillations during the last deglacial period that are very similar to those observed in the d18O records from Greenland ice cores. These records indicate that the transport of heat and salt toward the Nordic Seas was highest during the Bølling period. This ?superconveyor? weakened after the Bølling, probably as a consequence of increased meltwater flux reducing the oceanic salt content, as suggested by the Barbados sea-level record. Evidence for a phase of ice rafting during the Allerød is presented for the first time from this latitude in the northeast Atlantic. The Younger Dryas stadial, resolved here at a century/decadal scale, is characterized by very rapid oscillations in temperature and salinity, indicating that warm, relatively saline waters repeatedly displaced cool polar waters at this latitude. These observations attest to the inherent instability of the deglacial climate system.从苏格兰西北部巴拉扇（Barra Fan）采集的岩芯（坐标：56°43'N，09°19'W；水深1320米）重建得到的海表温度与盐度估算数据显示，末次冰消期存在一系列快速振荡信号，该信号与格陵兰冰芯的氧同位素18（δ¹⁸O）记录中观测到的振荡特征高度相似。上述记录表明，向挪威海输送热量与盐度的过程在波令暖期（Bølling period）达到峰值。该‘超级传送带’环流在波令暖期后出现减弱，这大概率是融水通量增加降低海洋盐度所致，该推论得到巴巴多斯海平面记录的佐证。本研究首次在东北大西洋该纬度海域，发现了阿勒罗德暖期（Allerød）存在冰筏沉积阶段的相关证据。本研究以百年/十年的分辨率解析了新仙女木冷期（Younger Dryas stadial）的演化特征，其以温度与盐度的快速振荡为典型特征，表明温暖且盐度相对较高的海水在该纬度区域反复取代寒冷的极地水体。上述观测结果证实了冰消期气候系统固有的不稳定性。