Chlorofluoromethane (Freon) Studies in the Filchner III Experiment

本项目是对威德尔海南部两种氯氟甲烷（氟利昂）的分布进行分析。这些样品是由首席研究员作为西德科考船POLARSTERN的Filchner III远征的一部分获得的。氟利昂是水柱中一种随时间变化的人为示踪剂，其分析是冰架水（Filchner冰架下形成的一种特殊类型的水）循环的化学和水文合作研究的一部分。该水类型的流出经过Filchner坳陷，随后在大陆斜坡上的演变，并渗透到威德尔海深处，并将所得数据用于研究威德尔海深处和底部水团的形成速率和输送路径。在巡航中收集的空气样本将被分析氟利昂浓度，以确定表层海水和上层大气之间的平衡程度。

This project is an analysis of the distribution of two species of chlorofluoromethanes (freons) in the southern Weddell Sea. The samples were obtained by the principal investigator as part of the Filchner III Expedition of the West German research vessel POLARSTERN. The analysis of freons, a time-dependent, anthropogenic tracer in the water column, is part of a collaborative chemical and hydrographical study of the circulation of Ice Shelf Water (a particular water type formed under the Filchner Ice Shelf). The outlow of this water type through the Filchner Depression, its subsequent evolution on the continental slope, and its penetration into the deep Weddell Sea will be followed, and the derived data used to study formation rates and transport paths of deep and bottom water masses in the Weddell Sea. Air samples that were collected on the cruise will be analyzed for freon concentrations in order to determine the extent of equilibrium between the surface sea water and the overlying atmosphere.