The Lake Agassiz-Younger Dryas-ET connection

阿加西湖-新仙女木-ET 连接

• 批准号: 7835-2008
• 负责人: Teller, James
• 金额: $ 3.06万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=513301
• 关键词: Lake; Agassiz; Younger; Dryas; ET

During the last deglaciation, Lake Agassiz was the largest lake on earth, and periodically released large volumes of water into the oceans through 4 different routes, which impacted on the way oceans circulated. Lake Agassiz overflow has been implicated in triggering the Younger Dryas -- an anomalous and global 1000-year-long cold episode that punctuated postglacial warming. New evidence, however, has left this conclusion in doubt. Climate modelers need to have this issue resolved so they can evaluate the potential impact of freshwaters on ocean circulation and climate.

在上一次冰川消融期间，阿加西湖是地球上最大的湖泊，通过4条不同的路线周期性地向海洋释放大量水，这对海洋的循环方式产生了影响。阿加西兹湖的泛滥被认为是引发年轻仙女木的罪魁祸首--这是一种异常的、全球性的长达1000年的寒冷事件，它打断了冰川后的变暖。然而，新的证据让这一结论产生了疑问。气候建模人员需要解决这个问题，这样他们才能评估淡水对海洋环流和气候的潜在影响。