Collaborative Research: Full-Holocene Decadal-Scale Isotopic Paleoclimate Record from Speleothems, Oregon Coast Range

合作研究：来自俄勒冈海岸山脉洞穴的全全新世十年尺度同位素古气候记录

• 批准号: 0502242
• 负责人: Richard Edwards
• 金额: $ 10.54万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-06-15 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0502242&HistoricalAwards=false
• 关键词: Collaborative; Research; Full; Holocene; Decadal

This project will use speleothems from southwestern Oregon, a region that is heavily influenced by maritime air masses emanating from the Pacific Ocean, to develop new and innovative high-resolution records in western North America. Available well-dated climate records from the Pacific Northwest show interannual-to-decadal variability but span only the last ~500 years and are thus unable to address whether high-frequency climate variability is a persistent feature over longer time intervals. The researchers will fill this science gap by obtain a decadal-scale records from speleothems. Their main scientific objective is to document how coupled atmosphere-ocean-terrestrial interactions have affected North America during the Holocene. The project will also explore linkages between Holocene climate variability in the latitude band of the northern hemisphere Westerlies where they enter North America, and other regions such as the North Atlantic, which appears to respond to quasi-periodic forcing by solar irradiance, and the equatorial Pacific, in which the frequency and intensity of El Nino-Southern Oscillation (ENSO) events are hypothesized to have changed in complex ways in response to gradual changes in Earth's orbit through the Holocene.The science resulting from this project will aid in the development of high-resolution (decadal) records of regional climate in the Pacific Northwest from a near-coastal site. These records are expected to improve understanding of past climate variability, and enhance projections of future climate change. Undergraduate and graduate students and postdoctoral scholars will be involved in this study thereby providing an excellent opportunity to participate and contribute to research in an emerging field of inquiry. The results of this research will be translated into educational products for visitors to Oregon Caves National Monument.

该项目将使用来自俄勒冈州西南部的Speleothems，该地区受到太平洋散发出的海洋空气群的影响，在北美西部开发了新的，创新的高分辨率记录。来自太平洋西北部的可用气候记录显示了年际与十年的变化，但仅跨越了过去〜500年，因此无法解决高频气候变异性是否在较长的时间间隔内是持续的功能。研究人员将通过从Speleothems获得十年级记录来填补这一科学空白。他们的主要科学目标是记录如何在全新世期间影响北美的大气 - 外星互动。 The project will also explore linkages between Holocene climate variability in the latitude band of the northern hemisphere Westerlies where they enter North America, and other regions such as the North Atlantic, which appears to respond to quasi-periodic forcing by solar irradiance, and the equatorial Pacific, in which the frequency and intensity of El Nino-Southern Oscillation (ENSO) events are hypothesized to have changed in complex ways in response to通过全新世，地球轨道的逐渐变化。该项目产生的科学将有助于从近沿岸的西北太平洋西北地区的高分辨率（年代十年）记录。预计这些记录将提高人们对过去气候变化的理解，并增强未来气候变化的预测。本研究将参与本科生和研究生以及博士后学者，从而提供了一个绝佳的机会，可以参与新兴的探究领域的研究。这项研究的结果将转化为俄勒冈洞穴国家纪念碑的游客的教育产品。