Development of a Multi-Parameter Ice Core Record from Eclipse Dome, St. Elias Mountains, Yukon Territory

育空地区圣埃利亚斯山脉 Eclipse Dome 多参数冰芯记录的开发

• 批准号: 9906844
• 负责人: Cameron Wake
• 金额: $ 14万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9906844&HistoricalAwards=false
• 关键词: Development; Multi; Parameter; Ice; Core

AbstractOPP-9906844A 160 meter ice core of opportunity was recovered during a drill test in 1996 from the St. Elias Mountains. The core was shipped to the University of New Hampshire. Subsequent major ion analyses of snowpit samples and a short (3.5 meter) section of the core from a depth of 112.5-116 meters indicates that a well preserved glaciochemical record is available from Eclipse Dome ice core. The Principal Investigator will develop a multi-parameter, high resolution paleoclimate record for the past 200 years through the chemical (major ions and oxygen isotopes) analysis of the Eclipse ice core. He will also collect and analyze available gridded meteorological data and instrumental meteorological records from stations surrounding the St. Elias Mountains. This observational data will be used to calibrate the ice core record and a variety of meteorological variables.Preliminary analyses indicates that the Eclipse Dome record should provide a record that is complimentary to the 290 year ice core record recovered from 5,430 meters on Mt. Logan. The continuous, high resolution, multi-parameter ice core that the Principal Investigator will use should provide data to investigate temporal variations in the physical climate system, air chemistry, and biogeochemical cycling. The Eclipse Dome record should be a valuable contribution for a data-poor region to the growing network of multi-parameter, annually resolved ice core and tree-ring records from the Arctic that can be used to document the regional characteristics of global climate change events.

1996年，在圣伊莱亚斯山脉的一次钻探试验中，发现了一个160米长的机会冰芯。 核心被运往新罕布什尔州大学。 随后对雪坑样品和112.5-116米深处的一小段（3.5米）冰芯进行的主要离子分析表明，Eclipse Dome冰芯保存完好。 首席研究员将通过对日食冰芯的化学（主要离子和氧同位素）分析，建立过去200年的多参数、高分辨率古气候记录。 他还将收集和分析可用的网格气象数据和仪器气象记录从周围的圣埃利亚斯山脉站。 初步分析表明，日蚀穹记录应能与从5,430米处获得的290年冰芯记录相补充。洛根 首席研究员将使用的连续、高分辨率、多参数冰芯应提供数据，以调查物理气候系统、空气化学和地球化学循环的时间变化。 Eclipse Dome记录对于数据匮乏的地区来说，应该是对北极地区日益增长的多参数、每年分辨的冰芯和树木年轮记录网络的宝贵贡献，这些记录可用于记录全球气候变化事件的区域特征。