Elucidating Both the Northwest Extent of Glacial Lake Agassiz, and the Northwest and South Outlet Chronologies

9972998渔业本研究的目的是限定阿加西冰湖西北出海口的空间范围和年代学，并确定其与南部出海口和气候变化的时间关系。阿加西湖还在将冰川融水从退缩的冰盖输送到墨西哥湾、北大西洋和北冰洋方面发挥了重要作用。然而，向北冰洋供水的西北出口的时间和位置尚不清楚。了解出口年代学尤为重要，因为西北出口的打开几乎与新仙女木时期寒冷时期的突然结束以及被称为前寒武纪振荡的变暖暂停同时发生。排放到北冰洋或墨西哥湾的融水对大气和海洋环流的影响将是显著的，影响北大西洋温盐环流。

9972998FisherThe objectives of this field-based research are to constrain the spatial extent and chronology of the northwest outlet of glacial Lake Agassiz, and to determine its temporal relationships with the southern outlet and climate change. Lake Agassiz was also instrumental in routing glacial meltwater from the retreating ice sheet to the Gulf of Mexico, North Atlantic and Arctic Oceans. However, the timing and location of the northwest outlet which fed water to the Arctic Ocean is not well understood. Knowing the outlet chronology is especially critical because opening of the northwest outlet was nearly coincident with the sudden ending of the Younger Dryas cold period and with a pause in the warming known as the Preboreal oscillation. The effects on atmospheric and oceanic circulation from meltwater discharged to either the Arctic Ocean or gulf of Mexico would have been significant, influencing North Atlantic thermohaline circulation.