14C Measurement in the U.S. Indian Ocean WOCE Program

9413169本项目是对美国世界海洋环流实验印度洋水文计划的一项贡献。PI将在探险的前两段(分别表示为WOCE线I8S和I9S线)以及1995年期间的大多数其他线收集水样进行碳-14(放射性碳)浓度分析。I8S和I9S线基本上是东经115度，东经85到95度，介于南纬30度和南极大陆之间的经线。具体目标包括将这些对炸弹注入的C-14的测量与1978年进行的类似测量进行比较，以便在17年的时间尺度上量化进入温跃层的混合率。测量还将有助于研究南澳大利亚盆地西部的深水循环，以及沿南极绕极洋流形成的亚南极模式水-南极中间水。***

9413169 Key This project is a contribution to the US World Ocean Circulation Experiment (WOCE) Indian Ocean Hydrographic Program (IO WHP). The PI will collect water samples to be analyzed for Carbon-14 (radiocarbon) concentration on the first two legs of the expedition, denoted as WOCE lines I8S and I9S, respectively, as well as on most of the other lines over the 1995 period. Lines I8S and I9S are essentially meridional lines along 115 degrees east, and 85 to 95 degrees east between about 30 degrees South and the Antarctic continent. Specific objectives include a comparison of these measurements of bomb-injected C-14 with similar measurements made in 1978 in order to quantify mixing rates into the thermocline over a 17-year time scale. Measurements will also contribute to a study of the deep water circulation in the western South Australia Basin, and the formation of Subantarctic Mode Water Antarctic Intermediate Water along the Antarctic Circumpolar Current. ***