Collaborative Research: Temperature reconstruction of the western equatorial Pacific thermocline during the last ~2000 years: a paleo perspective for modern observations

合作研究：近2000年西赤道太平洋温跃层的温度重建：现代观测的古视角

• 批准号: 0902679
• 负责人: Braddock Linsley
• 金额: $ 9.44万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902679&HistoricalAwards=false
• 关键词: Collaborative; Research; Temperature; reconstruction; western

Funds are provided for the PIs to reconstruct thermocline hydrography in the Western Pacific Warm Pool/Indonesian Seas spanning the lat 2000 years of the late Holocene. The existing sediment cores have high sedimentation rates and the proxy records can be compared to the instrumental record. The proposed work will involve stable-isotopic anlayses and Mg/Ca ratios on planktic foraminifera as well as benthic foraminifera H. balthica, for which the study will refine the existing Mg/Ca-temperature calibration. In addition, a Cd/Ca calibration for this benthic species will be established. The study, if it is able to better characterize the upper-ocean hydrography in the Indonesian Seas will lead to a greater understanding of late Holocene climate change in the Western Pacific warm pool. The work is considered to have a modest risk but a high return, if it succeeds in its objectives.Broader impacts include support of a female graduate student who will conduct 300 Mg/Ca analyses. Part time undergraduate student support is also included at SUNY Albany for basic lab tasks. Understanding of the long-term ENSO dynamics would be important for other workers and modelers alike.

基金提供的PI重建温跃层水文在西太平洋暖池/印度尼西亚海跨越晚全新世的后2000年。现有的沉积物岩心具有较高的沉积速率，代用记录可以与仪器记录进行比较。建议的工作将包括稳定同位素分析和镁/钙比值的南极有孔虫以及底栖有孔虫H。巴尔蒂斯卡，该研究将改进现有的镁/钙温度校准。此外，还将建立该底栖物种的镉/钙校准。如果这项研究能够更好地描述印度尼西亚海洋的上层海洋水文特征，将有助于更好地了解西太平洋暖池的晚全新世气候变化。这项工作被认为风险不大，但如果成功实现其目标，回报率很高，更广泛的影响包括支持一名女研究生进行300镁/钙分析。纽约州立大学奥尔巴尼分校还为本科生提供基本实验室任务的兼职支持。了解厄尔尼诺/南方涛动的长期动态对其他工作者和模型制作者都很重要。