Collaborative Research: P2C2--Ice Core and Firn Aquifer Studies at Combatant Col, British Columbia, Canada

合作研究：P2C2——加拿大不列颠哥伦比亚省 Combatant Col 的冰芯和冷杉含水层研究

• 批准号: 2001961
• 负责人: Eric Steig
• 金额: $ 24.69万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-07-15 至 2025-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2001961&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Ice; Core

This project aims to recover an ice core at Combatant Col, BC, Canada to reconstruct hydroclimate variability over the last 500 years. Previous work at Combatant Col demonstrates preservation of annual stratigraphy, water-isotope and geochemical records reflecting important climate and environmental variables including atmospheric circulation, snow accumulation, fire activity, and trans-Pacific dust transport. Existing North Pacific ice cores are located exclusively in Alaska and the Yukon. Combatant Col significantly expands the spatial coverage of ice core records, while simultaneously providing a unique record of hydroclimate in southwestern British Columbia. This project will conduct detailed radar surveys and ice-flow modeling to better understand the glaciological setting and to select the optimal site for drilling. A core to bedrock will be retrieved with logistics supported by the Hakai Cryosphere Node at the University of Northern British Columbia. Analysis of the core included in this project consists of water isotope ratios and visual stratigraphy. In combination with high-resolution radar imaging, the core from Combatant Col will be used to determine whether the observed firn-aquifer at this site (liquid water is stored perennially above the firn-ice transition) has been a persistent feature at the site, or whether it has formed recently, and to determine its impact on glacier energy balance and dynamics. The core will be archived and made available for additional analyses by the ice-core research community. The potential Broader Impacts include developing a new record of hydroclimate variability from the Combatant Col ice core which will provide quantitative constraints for modeling processes affecting a wide range of ecosystems and human communities in British Columbia and the Pacific Northwest of the United States. Other potential Broader Impacts include field work training and participation (Ice drilling) for a diverse cohort of graduate students facilitated by the proximity of the field site. The researchers plan outreach activities as part of “Climate Time” seminars series in which the paleoclimate research from Combatant Col site will be highlighted.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目旨在恢复加拿大卑诗省战斗机上校的冰芯，以重建过去500年的氢化气候变异性。战斗人员的先前工作表明，年度层学，水 - 同位素和地球化学记录，反映了重要的气候和环境变量，包括大气循环，积雪，火灾活动和跨太平洋尘埃运输。现有的北太平洋冰芯专门位于阿拉斯加和育空地区。战斗人员的Col显着扩大了冰核记录的空间覆盖范围，同时在不列颠哥伦比亚省西南部提供了独特的氢气候记录。该项目将进行详细的雷达调查和冰流建模，以更好地了解冰川学设置并选择最佳的钻井场所。在不列颠哥伦比亚省北部的Hakai Cryosphere节点支持的后勤方面，将检索基岩的核心。该项目中包含的核心的分析包括水同位素比和视觉层学。与高分辨率雷达成像结合使用，将使用战斗物Col的核心来确定该地点观察到的FIRN-Aquifer（液态水在Firn-Ice转换上方的长期存储）是否已在现场持续存在，或者是最近形成的，并且是否对其对冰川能量平衡和动力学的影响是持续的。核心研究社区将归档核心，并提供其他分析。潜在的更广泛的影响包括从战斗机上冰芯开发新的氢气候变异性记录，该记录将为不列颠哥伦比亚省和美国太平洋西北地区的广泛生态系统和人类社区的建模提供定量限制。其他潜在的更广泛的影响包括现场工作训练和参与（冰钻），用于多样化的研究生，由现场地点的接近度编写。研究人员计划外展活动是“气候时间”半手赛系列的一部分，其中将重点介绍战斗人员COL网站的古气候研究。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛影响的审查标准通过评估而被视为珍贵的支持。