Collaborative Research: Sediment Transport Mechanisms and Geomorphic Processes Associated with Shore Ice along Cold Climate Coastlines

合作研究:与寒冷气候海岸线岸冰相关的沉积物输送机制和地貌过程

基本信息

项目摘要

Cold climate coastlines are highly vulnerable to reduced winter ice cover in response to climate change. Limited or variable shore ice cover results in enhanced storm-induced coastal erosion and damage to coastal infrastructure. The dynamics of how reduced ice cover influences coastal evolution is poorly understood which inhibits accurate forecasting of future coastal response in cold climates. This work aims to improve our fundamental understanding of how sediment interacts with shore ice as well as the resulting coastal landscape change. The first part of the project will involve laboratory experiments aimed at studying the physics of sediment and ice interactions. The second part of the project will gather field measurements that use the laboratory measurements as a basis to investigate how cold climate coastlines naturally respond to the shore ice. This study will result in a model that will help explain how reduced and variable winter shore ice cover alters the coastal landscape, which will help coastal managers proactively plan for future climate change impacts. The project will train graduate and undergraduate students who will be recruited from groups underrepresented in the STEM fields. Public educational resources will be delivered to inner-city schools through partnership with Chicago Public Schools and will be shared nationally through The Scientific Research and Education Network (www.sciren.org), which is a science education non-profit founded by the PI.Accurate modeling of coastal evolution in cold climates is hindered by a limited understanding of the processes and responses associated with winter shore ice. This study will utilize unoccupied aerial and aquatic systems through a combined field and laboratory approach to test the hypothesis that variable ice cover is more erosive than consistent ice cover. This approach will yield the most comprehensive understanding to date of the morphodynamics of nearshore ice. Laboratory experiments in a frozen wave tank and ring shear apparatus will be used to constrain the forces required to entrain sediment within ice as well as the fundamental processes associated with transporting sediment-laden ice. Field investigations will be used to validate laboratory experiments as well as to describe the geomorphic processes and responses associated with shore ice. We will isolate the primary conditions facilitating sediment transport and shoreface geomorphic change during winter and resolve how the shoreface responds to these processes, which will provide the basis for models to include coastal evolution in cold temperature climates. The final result of this proposed study will be a conceptual model and set of empirically derived equations generated from the field and laboratory measurements that describe how shore ice drives sediment transport. This knowledge will be shared with practitioners through Great Lakes Coastal Zone Management Programs, local and regional stakeholder groups, and federal agencies.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.
气候寒冷的海岸线非常容易受到气候变化造成的冬季冰盖减少的影响。有限或多变的海岸冰盖导致风暴引起的海岸侵蚀加剧,并对沿海基础设施造成破坏。人们对冰盖减少如何影响海岸演变的动力学知之甚少,这阻碍了对寒冷气候下未来海岸反应的准确预测。这项工作的目的是提高我们的基本了解如何沉积物与海岸冰以及由此产生的海岸景观变化。该项目的第一部分将涉及旨在研究沉积物和冰相互作用的物理学的实验室实验。该项目的第二部分将收集现场测量结果,以实验室测量结果为基础,调查寒冷气候海岸线对海岸冰的自然反应。这项研究将产生一个模型,将有助于解释如何减少和可变的冬季海岸冰盖改变沿海景观,这将有助于沿海管理人员积极规划未来的气候变化影响。该项目将培训研究生和本科生,他们将从STEM领域代表性不足的群体中招募。 公共教育资源将通过与芝加哥公立学校的合作关系提供给市中心的学校,并将通过科学研究和教育网络(www.sciren.org)在全国范围内共享,这是一个科学教育非营利组织由PI创立的。对冬季海岸冰相关过程和响应的有限理解阻碍了对寒冷气候下海岸演变的准确建模。这项研究将利用无人居住的空中和水生系统,通过结合现场和实验室的方法来测试的假设,即可变的冰盖比一致的冰盖更侵蚀。这种方法将产生最全面的了解近岸冰的形态动力学。在冻结波槽和环剪切装置的实验室实验将被用来约束所需的力量,夹带在冰内的沉积物,以及与运输沉积物载冰的基本过程。实地调查将用于验证实验室实验以及描述地貌过程和与海岸冰相关的响应。我们将隔离的主要条件,促进沉积物运输和滨面地貌变化在冬季和解决如何滨面响应这些过程,这将提供模型的基础,包括在寒冷的温度气候沿海演变。这项拟议研究的最终结果将是一个概念模型和一套经验得出的方程,从现场和实验室测量,描述如何海岸冰驱动泥沙输运。这些知识将通过五大湖海岸带管理计划、地方和区域利益相关者团体以及联邦机构与从业者分享。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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Ethan Theuerkauf其他文献

Ethan Theuerkauf的其他文献

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{{ truncateString('Ethan Theuerkauf', 18)}}的其他基金

Collaborative Research: Sediment Transport Mechanisms and Geomorphic Processes Associated with Shore Ice along Cold Climate Coastlines
合作研究:与寒冷气候海岸线岸冰相关的沉积物输送机制和地貌过程
  • 批准号:
    1950101
  • 财政年份:
    2019
  • 资助金额:
    $ 23.71万
  • 项目类别:
    Standard Grant

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