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: 0902977
• 负责人: Yair Rosenthal
• 金额: $ 18.53万
• 依托单位: Rutgers University New Brunswick
• 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=0902977&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.

为 PI 提供资金，以重建横跨全新世晚期 2000 年的西太平洋暖池/印度尼西亚海的温跃层水文学。现有的沉积岩心具有较高的沉积速率，代理记录可以与仪器记录进行比较。拟议的工作将涉及浮游有孔虫和底栖有孔虫 H. balthica 的稳定同位素分析和 Mg/Ca 比率，为此研究将完善现有的 Mg/Ca 温度校准。此外，还将建立该底栖物种的 Cd/Ca 校准。这项研究如果能够更好地描述印度尼西亚海域上层海洋的水文学特征，将有助于更好地了解西太平洋暖池的全新世晚期气候变化。这项工作被认为风险适中，但如果成功实现其目标，回报很高。更广泛的影响包括支持一名将进行 300 次镁/钙分析的女研究生。纽约州立大学奥尔巴尼分校还为兼职本科生提供基本实验室任务的支持。了解 ENSO 的长期动态对于其他工作者和建模者来说非常重要。