Radiotracers in the Black Sea

1986年4月发生在切尔诺贝利核反应堆的事故导致各种放射性尘埃以脉冲式方式运往黑海。通过研究具有不同化学成分的一些切尔诺贝利示踪剂，已经能够跟踪颗粒活性物种的清除和清除过程，以及氧气和缺氧水之间的物理混合速度。在所有这些研究中，一个令人惊讶的因素是颗粒和水的快速垂直和水平传输速度，这对所有元素都很重要。这项提议允许对先前的工作采取后续行动，并增加了一个重要的科学部分，这是所有1988年以克诺尔为基础的研究中所缺少的，即对黑海北部的研究。具体来说，1989年4月，苏联的一艘考察船进入了多瑙河扇区。在这次巡航中，仅从该研究区域获得了最近的样品，这些样品对于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.