Developing and Absolutely-Dated Holocene Tree-Ring Chronology from Subfossil Huon Pine in Tasmania for Paleoclimatic and Isotopic Studies

摘要ATM-9627318 Cook，Edward D 'Arrigo，Rosanne哥伦比亚大学题目：为古气候和同位素研究从塔斯马尼亚的亚化石Huon Pine开发一个绝对定年的全新世树轮年表 该奖项支持地球系统历史计划（USGCRP）的研究，以开发一个完整的新世纪长度，绝对日期的年度树木年轮年表，从塔斯马尼亚的休恩松木。 这一年表将用于提供树木年代学定年的木材，用于开发南半球的独立放射性碳校准。 这将用于与仅从北方木材开发的校准曲线进行比较和扩展。 木材也将被用来描述整个全新世大气放射性碳的半球间偏移。 这样做，可以确定不寻常的温盐环流和海洋通风的时期。 该项目还将为稳定同位素研究提供过时木材，并为树木年轮气候研究编制千年年轮年表。 因此，这些数据将提供高分辨率，精确的估计气候变化的全新世在南半球的这一部门。 这将是世界上最长的树木年轮年表，并将提供有关晚冰期高分辨率气候和放射性碳变化的丰富信息。

Abstract ATM-9627318 Cook, Edward D'Arrigo, Rosanne Columbia University Title: Developing an Absolutely-Dated Holocene Tree-Ring Chronology from Subfossil Huon Pine in Tasmania for Paleoclimatic and Isotopic Studies This award supports research within the Earth System History Program (USGCRP) to develop a Holocene-length, absolutely-dated annual tree-ring chronology from Huon pine wood in Tasmania. This chronology will be used to provide dendrochronologically-dated wood for developing an independent radiocarbon calibration for the Southern Hemisphere. This will be used to compare for comparing with and extend the calibration curve developed from Northern Hemisphere wood alone. The wood will also be used to characterize the inter-hemispheric offset in atmospheric radiocarbon throughout the Holocene. In so doing, periods of unusual thermohaline circulation and ocean ventilation may identified. This project will also provide dated wood for stable isotope studies and develop multi-millennial annual tree-ring chronologies for dendroclimatic studies. Thus, these data will provide high-resolution, precisely- dated estimates of climate variability for most of the Holocene in this sector of the Southern Hemisphere. This will be the longest tree-ring chronology in the world and will provide a wealth of information about high-resolution climate and radiocarbon variations back to the late-glacial period.