SGER: Long coring in the Eastern Equatorial Pacific to address key questions of tropical and global climate change

SGER：在东赤道太平洋长期取芯以解决热带和全球气候变化的关键问题

• 批准号: 0850143
• 负责人: Timothy Herbert
• 金额: --
• 依托单位: Brown University
• 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: 2009-01-15 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0850143&HistoricalAwards=false
• 关键词: SGER; Long; coring; Eastern; Equatorial

This award will provide funds for the PI and two graduate students to join the R.V. Knorr during a transit leg from Hawaii to Panama in order to conduct approximately 5 days of piston coring in the Eastern Equatorial Pacific (EEP) using the newly developed long coring capability of the R.V. Knorr. In combination with multi-coring to recover intact Holocene sediments, the long coring capability will permit the PI to target high deposition rate settings in critical regions of the EEP to obtain sediment across four to five glacial-interglacial cycles in the heart of the cold tongue of the EEP for the first time. Cores will be logged by Multi Sensor Track (MST), and preliminary AMS radiocarbon dates will be collected on the cores to establish sedimentation rates and Late Quaternary age models. An open forum will be scheduled at the Fall 2008 AGU meeting in San Francisco to solicit input from the scientific community on the science coring plan. After collection, these cores will be made available to researchers interested in studying them without a moratorium period. The Broader Impacts include the participation of graduate students and the potential for international collaboration with colleagues from Peru and Ecuador. This research will provide material to study societally relevant climate issues such as El Nino and La Nina variability throughout Earth history.

该合同将为PI和两名研究生提供资金，使他们能够在从夏威夷到巴拿马的运输航程中加入Knorr公司，以便利用Knorr公司新开发的长取芯能力在东赤道太平洋（EEP）进行为期约5天的活塞取芯。 结合多芯取芯以恢复完整的全新世沉积物，长芯取芯能力将使PI能够在EEP的关键区域以高沉积速率设置为目标，以首次在EEP冷舌的中心获得四到五个冰川-间冰期循环的沉积物。岩心将由多传感器跟踪（MST）记录，初步AMS放射性碳测年将收集在岩心上，以建立沉积速率和晚第四纪年龄模型。2008年秋季在旧金山弗朗西斯科举行的AGU会议上将安排一个公开论坛，征求科学界对科学取芯计划的意见。收集后，这些核心将提供给有兴趣研究它们的研究人员，没有暂停期。更广泛的影响包括研究生的参与以及与来自秘鲁和厄瓜多尔的同事进行国际合作的可能性。这项研究将为研究与社会有关的气候问题提供材料，如厄尔尼诺和拉尼娜在整个地球历史上的变化。