Collaborative Research: Ice-Age and Millennial-Scale Changes of Pacific Intermediate Waters: Ventilation from the Southern Ocean

合作研究：太平洋中层水域的冰河时代和千年尺度的变化：南大洋的通风

• 批准号: 9907292
• 负责人: Mitchell Lyle
• 金额: $ 18.67万
• 依托单位: Boise State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9907292&HistoricalAwards=false
• 关键词: Collaborative; Research; Ice; Age; Millennial

99-06778 Pisias99-07292 LyleThe recommended proposal is for a marine geological field program in the eastern equatorial and subtropical Pacific to study vertical water mass distributions during the late Pleistocene on millennial time scales. The object of the proposed work is to: 1) serve as a site survey for both coring and geophysical data in support of the JOIDES ODP Proposal 465/ADD, currently highly ranked by the JOIDES SCICOM with a strong likelihood of drilling in the year 2001 or 2002; 2) document the acquired sediment cores for investigations of millennial-scale climate and ocean variability in the eastern equatorial Pacific; and 3) test the hypothesis that episodic ventilation of the intermediate waters of the Pacific Basin results from intensified flow of Antarctic Intermediate Water. Intermediate water properties will be examined with benthic foraminiferal species and isotopic data. By examining the timing and spatial distribution of climate events associated with intermediate waters, it will be assessed whether such changes are driven from the Southern or Northern Hemispheres.***

99-06778 Pisias99-07292 Lylethe建议的建议是针对东部赤道和亚热带太平洋的海洋地质野外计划，可在千年时间尺度上研究更新世的垂直水质量分布。 拟议的工作的目的是：1）作为对加入ODP提案465/ADD的CORING和地球物理数据的现场调查，目前由JOIDES SCICOM高度排名，并在2001年或2002年进行钻探的可能性很高； 2）记录了所获得的沉积物核心，以调查东部赤道太平洋地区千禧一代气候和海洋变异性； 3）检验以下假设：太平洋盆地中间水域的发作通气是由南极中间水流的加剧引起的。 将使用底栖有孔虫物种和同位素数据检查中间水性质。通过检查与中间水相关的气候事件的时间和空间分布，将评估这种变化是从南半球还是北半球驱动的。***