Water Mass Formation, Renewal and Exchange in the Arctic Ocean: Tritium/He, 180 and 14C Measurements on the Arctic 1991 Expedition

北冰洋水团的形成、更新和交换：1991 年北极探险中的氚/He、180 和 14C 测量

• 批准号: 9022890
• 负责人: Peter Schlosser
• 金额: $ 22.8万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-05-01 至 1994-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022890&HistoricalAwards=false
• 关键词: Water; Mass; Formation; Renewal; Exchange

This project is an investigation into the circulation of the deep basins of the Arctic Ocean using chemical tracers supported by closely spaced hydrographic sections. Oceanic tracers are extremely useful in assessing how the large- scale circulation maintains the hydrographic structure and the arctic sea ice cover, and in estimating the exchange of water between the Arctic Ocean and its marginal seas. This project will collect, measure, and evaluate the tritium, helium isotopes, oxygen-18, and carbon-14 concentration in sea water on transects in the European Basin as part of the International Arctic Ocean Expedition 1991, a three-ship expedition. Small volume sampling will be carried out on the Swedish icebreaker ODEN, while large-volume sampling will be done from the German research ship POLARSTERN. The proposed combination of tracers will allow the establishing of renewal time scales for both deep and shallow water masses. Additionally, the pattern of tracers in deep basins will give indications of the origin of these deep water masses and the processes by which they were formed.

这个项目是一个调查的流通， 使用化学示踪剂研究北冰洋的深海盆地 由紧密间隔的水文剖面支持。 海洋 示踪剂在评估大的- 尺度环流维持水文结构， 北极海冰覆盖，并在估计交换 北冰洋及其边缘海之间的水域。 这 该项目将收集、测量和评估氚， 氦同位素，氧-18和碳-14浓度 海水对欧洲海盆断面的影响， 1991年国际北冰洋考察，一艘三艘船 探险 小体积取样将在 瑞典的ODEN号破冰船， 将在德国研究船POLARSTERN上完成。 的 建议的示踪剂组合将允许建立 更新的时间尺度为深水和浅水 群众 此外，深部盆地示踪剂的分布模式 将为这些深水的起源提供线索 以及它们形成的过程。