Ocean-Ice Sheet Interactions in the North Atlantic Prior to ~130,000 Years Ago

约 13 万年前北大西洋海洋与冰盖的相互作用

• 批准号: 9509997
• 负责人: Gerard Bond
• 金额: $ 31.28万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-15 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9509997&HistoricalAwards=false
• 关键词: Ocean; Ice; Sheet; Interactions; North

9509997 Bond Fast paced cycles of two to three thousand years recorded in the North Atlantic cores show apparently synchronous discharge of icebergs from at least two sources on Iceland and the Gulf of St. Lawrence and may be related to mechanisms originating in the ocean/atmosphere system. Each cycle also correlates with cold pulses in Greenland ice cores and linked to Heinrich events. The PI's research will further investigate the role of ice sheets in forcing rapid climate shifts. If the 2 to 3 thousand-years cycles persist through different glacial/interglacial periods then they would imply that the oscillations operate independently of large glaciers and originate in the atmosphere/ocean system. ***

9509997邦德在北大西洋核心记录的两到三千年的快速循环表明，从冰岛和圣劳伦斯湾至少有两个来源的冰山显然同步排放，并且可能与源自海洋/大气系统的机制有关。 每个周期还与格陵兰冰芯中的冷脉冲相关，并与海因里希事件有关。 PI的研究将进一步研究冰盖在迫使气候转变迅速转移中的作用。 如果2至3千年的周期在不同的冰川/冰河间时期持续存在，那么他们将暗示振荡独立于大型冰川，起源于大气/海洋系统。 ***