SGER: Exploring Linkages Between Indonesian Gateway Closure and Sea-Level Change During the Middle to Late Miocene

SGER：探索中新世中晚期印度尼西亚门户关闭与海平面变化之间的联系

• 批准号: 0233992
• 负责人: R Leckie
• 金额: $ 8.42万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-15 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0233992&HistoricalAwards=false
• 关键词: SGER; Exploring; Linkages; Between; Indonesian

This research explores the use of faunal and geochemical proxies to investigate the interactions of sea level fluctuations and tectonic processes on the Indonesian Seaway and associated effects on the early development of the western Pacific warm pool. The study will use statistical analyses of planktic foraminifer populations and isotope measurements on multi-species of planktic foraminifers to reconstruct upper water column structure, productivity and seasonality for key intervals during the middle to late Miocene (ca 13.5 - 6.0 Ma). Mg/Ca measurements on benthic and planktic foraminifers will be used to estimate the influences of ice volume and surface water salinity on the oxygen isotope record.

本研究探讨了利用动物和地球化学指标来研究印度尼西亚海道海平面波动和构造过程的相互作用及其对西太平洋暖池早期发育的相关影响。本研究将利用浮游有孔虫种群的统计分析和多种类浮游有孔虫的同位素测量，重建中新世中晚期（约13.5 ~ 6.0 Ma）关键时期的上层水柱结构、生产力和季节性。对底栖和浮游有孔虫的Mg/Ca测量将用于估计冰体积和地表水盐度对氧同位素记录的影响。