Radiotracers in the Black Sea

黑海的放射性示踪剂

• 批准号: 8917465
• 负责人: Hugh Livingston
• 金额: $ 19.77万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917465&HistoricalAwards=false
• 关键词: Radiotracers; Black; Sea

The April 1986 accident at the Chernobyl nuclear power reactor resulted in the pulse-like delivery to the Black Sea of a variety of fallout radionuclides. By studying a number of Chernobyl tracers with differing chemistries, both scavenging and removal processes have been able to be followed for particle-reactive species as well as the rates of physical mixing between the oxic and anoxic waters. A surprising element in all these studies is the rapid vertical and horizontal rates of particle and water transport which are important for all elements. This proposal allows for follow up on the earlier work and adds an important scientific component which is missing from all of the 1988 KNORR- based studies, namely an examination of the northern Black Sea. Specifically, access was gained to the Danube fan region aboard a Soviet research vessel in April 1989. On this cruise the only recent samples from this study area were obtained, which are crucial for completing studies of this basin's geochemistry.

1986 年 4 月发生的切尔诺贝利核反应堆事故导致多种放射性核素以脉冲方式释放到黑海。通过研究许多具有不同化学成分的切尔诺贝利示踪剂，能够跟踪颗粒反应物质的清除和去除过程以及含氧水和缺氧水之间的物理混合速率。 所有这些研究中的一个令人惊讶的因素是颗粒和水传输的快速垂直和水平速率，这对所有元素都很重要。 该提案允许对早期工作进行跟进，并增加了 1988 年所有基于 KNORR 的研究中所缺少的重要科学组成部分，即对黑海北部的检查。 具体而言，1989 年 4 月，一艘苏联科考船进入了多瑙河扇地区。在这次巡航中，获得了该研究区域唯一的最新样本，这对于完成该盆地的地球化学研究至关重要。