Collaborative Research: A High Resolution Speleothem Record of Holocene, Last Glacial, and Last Interglacial Climate and Vegetation from the North American Mid-Continent

合作研究：北美中大陆全新世、末次冰期和末次间冰期气候和植被的高分辨率洞穴记录

• 批准号: 0402482
• 负责人: Jeffrey Dorale
• 金额: --
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2010-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0402482&HistoricalAwards=false
• 关键词: Collaborative; Research; Resolution; Speleothem; Record

This award uses funds to help obtain a 130,000-year high-resolution record of climate from speleothems in the mid-continent of North America. The primary field site, Crevice Cave, Missouri, was located south of the former Laurentide Ice Sheet during the past interglacial-glacial cycle. The researchers hypothesize that the site is well situated to record changes in mid-continent climate, global climate variability, and vegetation changes during interglacial-glacial cycles. Previous studies by the researchers indicate that speleothems from Crevice Cave have grown continuously over tens of thousands of years. The researchers expect to produce a high-resolution stable isotope record, dated by the Thorium-230 technique, from the North American mid-continent covering most of the last interglacial-glacial cycle. This research will provide a unique educational experience for graduate and undergraduate students and will help improve our knowledge of Holocene climate variability of North America from a new paleoclimate data archive.

该奖项使用资金帮助获得北美中部大陆洞穴沉积物的13万年高分辨率气候记录。 主要的现场，裂缝洞，密苏里州，位于南部的前劳伦蒂德冰盖在过去的间冰期-冰期循环。 研究人员假设，该地点的位置很好，可以记录中大陆气候的变化，全球气候变化和间冰期-冰期循环期间的植被变化。 研究人员先前的研究表明，裂缝洞穴的洞穴沉积物已经连续生长了数万年。 研究人员希望通过钍-230技术制作一个高分辨率的稳定同位素记录，该记录来自北美中部大陆，覆盖了最后一次间冰期-冰期循环的大部分时间。 这项研究将为研究生和本科生提供一个独特的教育经验，并将有助于提高我们的知识全新世气候变化的北美新的古气候数据档案。