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

冰期至冰消期（~23-10 ka）期间印度洋东南部表层水 14C 水库年龄的变化

• 批准号: 388259472
• 负责人: Professor Dr. Michael Sarnthein
• 金额: --
• 依托单位: Institut für Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/388259472?language=en
• 关键词: Changing; 14C; reservoir; ages; surface

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.

当放在不确定性小于100-500年的绝对时间尺度上时，浮游生物放射性碳（14 C）储层年龄对于定量了解海洋表面沃茨水的命运和过去环流变化的起源至关重要。为了限制23和10 cal. ka之间的气候变化的冰川-冰消事件，14 C高原调整方法特别适合于提供变化的南极水库年龄和高达17个高原边界年龄的高精度估计（以历年B. P.表示）的半连续套件。基于在全球海洋各个地区进行14 C测年的丰富经验，我们的基尔小组计划在从西澳大利亚大陆边缘获得的几个岩心中建立这样的时间尺度，这是R/V索内远征SO-257的目标区域（2017年5月中旬至6月）。最近，我应W.博士教授的邀请，利用难得的机会。Kuhnt，首席科学家，作为14 C测年专家参加这次巡航，我请求DFG提供资金，以支付我从基尔到出发港（达尔文，澳大利亚）和抵达后返回（弗里曼特尔，澳大利亚）的旅费。其他费用将由R/V索内项目支付。