Radiotracers in the Black Sea

1986年4月的切尔诺贝利核反应堆事故导致各种放射性核素以脉冲状向黑海输送。通过研究一些具有不同化学性质的切尔诺贝利示踪剂，已经能够对颗粒反应性物质进行清除和去除过程，以及对有氧和无氧水之间的物理混合速率进行跟踪。在所有这些研究中，一个令人惊讶的因素是粒子和水的快速垂直和水平传输速率，这对所有元素都很重要。这项建议允许对先前的工作采取后续行动，并增加了1988年所有以KNORR为基础的研究所缺少的一个重要的科学组成部分，即对黑海北部的检查。具体地说，1989年4月，一艘苏联研究船获准进入多瑙河扇区。在这次巡航中获得了该研究区域唯一的最新样本，这对完成该盆地的地球化学研究至关重要。

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.