Developing capacity for planning and adapting to riverbank erosion and its consequences in the Yukon River Basin

发展育空河流域规划和适应河岸侵蚀及其后果的能力

• 批准号: 2127445
• 负责人: Edda Mutter
• 金额: $ 47.17万
• 依托单位: Yukon River Inter-Tribal Watershed Council
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-01-01 至 2026-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2127445&HistoricalAwards=false
• 关键词: Developing; capacity; planning; adapting; riverbank

Navigating the New Arctic (NNA) is one of NSF's 10 Big Ideas. NNA projects address convergence scientific challenges in the rapidly changing Arctic. The Arctic research is needed to inform the economy, security and resilience of the Nation, the larger region and the globe. NNA empowers new research partnerships from local to international scales, diversifies the next generation of Arctic researchers, enhances efforts in formal and informal education, and integrates the co-production of knowledge where appropriate. This award fulfills part of that aim by addressing interactions among social systems, natural environment, and built environment in the following NNA focus areas: Arctic Residents, Data and Observation, Forecasting, Global Impact, and Resilient Infrastructure. Arctic warming is causing landscape change that is affecting Arctic communities. Rivers and floodplains are particularly susceptible to a warmer climate due to permafrost thaw that can lead to accelerated erosion. This erosion threatens critical infrastructure and disrupts community life, including by sometimes displacing entire Alaska communities. Yet the response of erosion to warming, and its implications, are not well understood. In addition to imperiling infrastructure, erosion exposes frozen floodplain sediment that contains potential contaminants including heavy metals, such as mercury, along with nutrients and pathogens, all of which can imperil water quality and ecosystem health. By affecting community infrastructure and water quality, Arctic river erosion sits at the nexus of multiple problems that impact society. Greater understanding of bank erosion and its water quality impacts will be critical to supporting sustainable Arctic communities. Equally important will be understanding regional adaptive capacity challenges and opportunities to allow for the adoption of scientific knowledge into actionable plans and policies. To meet these multiple challenges important for scientific knowledge and society, this project unites a research team from the Yukon River Inter-Tribal Watershed Council, University of Alaska Anchorage, California Institute of Technology, Los Alamos National Laboratory, University of Southern California, and three Indigenous partner communities in the Yukon River basin that are threatened by riverbank erosion.The project will develop numerical models of landscape evolution to understand rates of riverbank erosion in the warming Arctic and their effects on biogeochemical processes that affect water quality and community infrastructure. Observational stations will monitor bank erosion, flow hydraulics, water quality and microbial ecosystems at three study sites co-located with partner communities in the Yukon River basin. Floodplain, riverbank and water column sampling will be used with biogeochemical, isotopic and metagenomic measurements to understand the abundance, character and process dynamics of fine sediment, nutrients, mercury and other metals, and pathogens. The project also will include an evaluation of regional adaptive capacity and an identification of opportunities for and institutional barriers to adaptation. Natural and social science will converge to produce Erosion Action Plans that are needed for Alaska Native communities to plan for climate-change adaptation. Community-based science will enhance this collaborative effort, and educational activities with our partner communities will build and fortify process understanding. Web-based modules will illustrate and inform the public about observed changes in Arctic rivers, future projections, and how new science combined with citizen-science efforts can lead to effective planning strategies for sustainable Arctic communities.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.

NSF的10个大创意之一是导航新北极（NNA）。 NNA项目应对北极快速变化的融合科学挑战。需要进行北极研究，以告知国家，较大地区和全球的经济，安全和弹性。 NNA赋予从本地量表到国际规模的新研究伙伴关系，使下一代北极研究人员多样化，加强了正规和非正式教育方面的努力，并在适当的情况下整合了知识的共同生产。该奖项通过解决以下NNA焦点领域中的社会系统，自然环境和建筑环境之间的互动来实现该目标的一部分：北极居民，数据和观察，预测，全球影响和弹性基础设施。北极变暖正在导致影响北极社区的景观变化。由于多年冻结融化，河流和洪泛区特别容易受到温暖的气候，这可能导致加速侵蚀。这种侵蚀威胁着关键的基础设施并破坏社区生活，包括有时流离失所的阿拉斯加社区。然而，侵蚀对变暖及其含义的反应尚不清楚。除了破坏基础设施外，侵蚀还暴露了冷冻的洪泛区沉积物，其中包含潜在的污染物，包括重金属，例如汞以及营养素和病原体，所有这些都会危及水质和生态系统的健康。通过影响社区基础设施和水质，北极河侵蚀处于影响社会的多种问题的联系。对银行侵蚀及其水质影响的更多了解对于支持可持续的北极社区至关重要。同样重要的是了解区域适应能力的挑战和机会，以使科学知识将科学知识采用到可行的计划和政策中。为了应对这些对科学知识和社会重要重要的挑战，该项目将育空河河间分水岭委员会的研究团队团结在一起，阿拉斯加大学安克雷奇大学，加利福尼亚州理工学院，洛斯阿拉莫斯国家实验室，南加州大学，以及三个Yukon River Basin the Riverbank的建模率的Yukon River Basins of Riversion recorion recrape riverbank the Numerband of Riverbank的建模。变暖北极的侵蚀及其对影响水质和社区基础设施的生物地球化学过程的影响。观察站将在与育空河盆地合作伙伴社区共同置于的三个研究地点，监测三个研究地点的银行侵蚀，流液压，水质和微生物生态系统。洪泛区，河岸和水柱采样将与生物地球化学，同位素和元基因组学测量一起使用，以了解细小，营养素，汞和其他金属以及病原体的丰度，特征和过程动态。该项目还将包括对区域适应能力的评估，并确定适应的机遇和机构障碍。自然和社会科学将融合以制定阿拉斯加土著社区为气候变化适应计划所需的侵蚀行动计划。基于社区的科学将加强这种协作的努力，与我们的合作伙伴社区的教育活动将建立和强化流程的理解。基于Web的模块将说明并告知公众有关北极河流的变化，未来的预测以及新科学与公民科学的努力如何相结合，可以为可持续的北极社区提供有效的计划策略。该奖项反映了NSF的法定使命，并通过使用基金会的知识优点和广泛的影响来评估NSF的法定任务，并被认为是值得的支持。