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. ***

小行星9509997 北大西洋冰芯记录的两到三千年的快节奏周期表明，冰岛和圣劳伦斯湾至少有两个来源的冰山明显同步排放，可能与海洋/大气系统中产生的机制有关。 每个循环也与格陵兰冰芯的冷脉冲相关，并与海因里希事件有关。 PI的研究将进一步调查冰盖在迫使气候快速变化中的作用。 如果两三千年的周期持续不同的冰期/间冰期，那么它们将意味着振荡独立于大型冰川，起源于大气/海洋系统。 ***