Changing 14C reservoir ages of surface waters in the southeastern Indian Ocean during glacial-to-deglacial times (~23-10 ka)

浮游生物放射性碳(14C)的储藏年龄对于定量洞察海洋表面水域的命运和过去环流变化的来源至关重要，如果将其置于绝对时间尺度上，不确定度小于100-500年。以限制23至10卡之间气候变化的冰期至非冰期事件。KA的14C高原调谐方法特别适合于提供浮游生物储集层年龄变化的半连续套装，以及高达17个高原边界年龄的高精度估计(以日历年B.P.表示)。基于在全球海洋不同部分进行14C测年的丰富经验，我们的基尔小组计划在几个岩心中建立这样的时间尺度，这些岩心将从西澳大利亚大陆边缘获得，这是R/V Sonne Expedition SO-257(2017年5月中旬至6月)的目标区域。为了利用这次难得的机会，应首席科学家W.Kuhnt教授的邀请，以14C专家的身份参加这次邮轮，我请求DFG提供资金，以支付我从基尔到出发港口(澳大利亚达尔文)和到达后返回(澳大利亚弗里曼特尔)的旅费。其他费用将由R/V Sonne项目支付。

Planktic radiocarbon (14C) reservoir ages are crucial for gaining quantitative insights into the fate of ocean surface waters and the origin of past circulation changes, when put on an absolute time scale with uncertainties less than 100-500 yr. To constrain glacial-to-deglacial events of climate change between 23 and 10 cal. ka the 14C plateau-tuning method turned out particularly well suited to provide semi-continuous suites of both changing planktic reservoir ages and up to 17 high-precision estimates of plateau boundary ages (expressed in calendar yr B.P.). Based on ample experience with 14C dating in various parts of the global ocean our Kiel group plans to establish such time scales in several cores to be obtained from the West Australian continental margin, the target area of R/V Sonne Expedition SO-257 (mid-May-June 2017). To avail myself of the rare opportunity of following a recent invitation by Prof. Dr. W. Kuhnt, chief scientist, to participate as expert in 14C dating in this cruise I request the DFG for funds to cover my travel expenses from Kiel to the ports of departure (Darwin, AUS) and back after arrival (Freemantle, AUS). Further expenses will be covered by the R/V Sonne project.