SGER: Natural and Artificial Radionuclides as Tracers of Particle Cycling and Circulation Time Scales in the Arctic Ocean

SGER：天然和人造放射性核素作为北冰洋粒子循环和循环时间尺度的示踪剂

• 批准号: 9408945
• 负责人: Stephen Moran
• 金额: $ 4.99万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9408945&HistoricalAwards=false
• 关键词: SGER; Natural; Artificial; Radionuclides; Tracers

9408945 Moran This Small Grants for Exploratory Research (SGER) project involves an opportunistic collaboration between U.S. and Canadian investigators who will conduct a study of a suite of natural and artificial radionuclides during the 1994 U.S./Canada Arctic Ocean Section (AOS). The AOS is under the auspices of the Arctic Systems Science (ARCSS) Global Change Research Program. The AOS is a collaborative research effort with Canada that will involve approximately 60 scientists on a Canadian and a U.S. icebreaker during a 55-day cruise in the summer of 1994. This project will measure Thorium isotopes in seawater to quantify upper ocean particulate organic C and N export fluxes and deep ocean particle cycling. In-situ pumps will be used to collect dissolved and particulate samples for determination of radionuclides in the surface and deep waters. Collection of these data within the framework of other multidisciplinary efforts will lead to a better understanding of organic C and N cycling, particle dynamics and circulation time scales in the Arctic Ocean, and will contribute to the emerging global efforts to better understand the role of the Arctic Ocean in global climate change.

9408945莫兰这个探索研究小额赠款项目涉及美国和加拿大研究人员之间的机会主义合作，他们将在1994年美国/加拿大北冰洋部分(AOS)期间对一套天然和人造放射性核素进行研究。AOS由北极系统科学(ARCS)全球变化研究计划赞助。AOS是一项与加拿大合作的研究工作，将有大约60名科学家在一艘加拿大破冰船和一艘美国破冰船上参与1994年夏天为期55天的巡航。该项目将测量海水中的钍同位素，以量化上层海洋颗粒有机碳和氮的输出通量和深海颗粒循环。将使用现场水泵收集溶解和微粒样本，以确定地表和深水中的放射性核素。在其他多学科努力的框架内收集这些数据将有助于更好地了解北冰洋的有机碳和氮循环、颗粒动力学和环流时间尺度，并将有助于正在出现的更好地了解北冰洋在全球气候变化中的作用的全球努力。