Sedimentation Processes in the Eastern Equatorial Pacific

赤道东太平洋的沉积过程

• 批准号: 8818308
• 负责人: Nicklas Pisias
• 金额: $ 43.04万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1992-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818308&HistoricalAwards=false
• 关键词: Sedimentation; Processes; Eastern; Equatorial; Pacific

The equatorial Pacific has been the object of several studies in the fields of physical oceanography and marine geology. The region is known to have a strong response to climate change over many different time scales. This includes seasonal and interannual variations, late Pleistocene rhythmic changes associated with orbital forcing and high latitude glaciation, and long-term evolution of climate systems associated with changes in late Neogene oceanic boundary conditions. A critical aspect of modern oceanographic research is to deduce the timing and global relations of these oceanographic changes in the eastern Pacific. This award will support a sedimentologic and paleoceanographic study of the eastern equatorial Pacific using seismic reflection profiling and shallow sediment coring. Sediments recovered will be analyzed for their geochemical and paleontologic record. Isotope studies will be used to determine age and history of sea surface conditions. Additionally, data to be acquired will form the basis for recovering longer history of the region using cores recovered by the Ocean Drilling Program.

赤道太平洋一直是物理海洋学和海洋地质学领域多项研究的对象。众所周知，该地区在许多不同的时间尺度上对气候变化都有强烈的反应。这包括季节性和年际变化、与轨道强迫和高纬度冰川作用相关的晚更新世节律变化，以及与新近纪晚期海洋边界条件变化相关的气候系统的长期演化。现代海洋学研究的一个重要方面是推断东太平洋这些海洋变化的时间和全球关系。 该奖项将支持利用地震反射剖面和浅层沉积物取芯对赤道东太平洋进行沉积学和古海洋学研究。将分析回收的沉积物的地球化学和古生物学记录。 同位素研究将用于确定海面状况的年龄和历史。此外，要获取的数据将构成利用海洋钻探计划回收的岩心恢复该地区较长历史的基础。