Collaborative Research: The Sedimentary Record of Tidewater Glacier Response to Holocene Climate Variability in the Antarctic Peninsula

合作研究：南极半岛潮水冰川对全新世气候变化响应的沉积记录

• 批准号: 0739596
• 负责人: Julia Wellner
• 金额: $ 24.23万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0739596&HistoricalAwards=false
• 关键词: Collaborative; Research; Sedimentary; Record; Tidewater

This project studies marine sediment cores from the Antarctic peninsula to determine whether the current decay of ice shelves there is caused by global warming or another cycle. A comprehensive set of core analyses?from radiocarbon to biostratigraphy?will be performed to characterize ice-shelf status during the last 20,000 years. The project?s goal is to assess ice-shelf response to environmental drivers such as ocean temperature, precipitation, and sea ice extent. The study benefits from two, recent, NSF-supported expeditions to the area, including ShalDril, in which lengthy sediment cores were collected. These cores will support development of a high-resolution picture of the peninsula?s glacial, climactic, and oceanographic history. The broader impacts of this project include graduate and undergraduate participation in research, support for early career researchers, collaboration with primarily undergraduate institutions, and international collaboration with scientists in the UK and Poland. There are also implications for society?s understanding of climate change, since this work improves our understanding of the behavior of ice sheets and their links to global climate.

该项目研究南极半岛的海洋沉积物岩心，以确定目前冰架的腐烂是否是由全球变暖或另一个循环引起的。将进行一套全面的岩心分析（从放射性碳到生物地层学），以描述过去 20,000 年来冰架的状况。该项目的目标是评估冰架对海洋温度、降水和海冰范围等环境驱动因素的响应。这项研究受益于最近两次由 NSF 支持的对该地区的考察，其中包括 ShalDril，其中收集了长的沉积岩芯。这些岩心将支持绘制半岛冰川、气候和海洋历史的高分辨率图像。 该项目的更广泛影响包括研究生和本科生参与研究、支持早期职业研究人员、与主要本科机构的合作以及与英国和波兰科学家的国际合作。这对于社会对气候变化的理解也有影响，因为这项工作提高了我们对冰盖行为及其与全球气候联系的理解。