Collaborative Research: EAGER: Persistent measurements of surface waves in landfast ice using fiber optic telecommunication cables

合作研究：EAGER：使用光纤通信电缆持续测量陆地冰中的表面波

• 批准号: 2215134
• 负责人: James Thomson
• 金额: $ 21.4万
• 依托单位: University of Washington
• 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: 2022-04-15 至 2024-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2215134&HistoricalAwards=false
• 关键词: Collaborative; Research; EAGER; Persistent; measurements

In shallow, coastal regions of the Arctic, sea ice forming on the ocean that is attached to the coast is known as landfast ice. Breakup of this ice is likely driven by a combination of melting and ocean wave action. Following spring breakup, when ice is not present for the summer months, there is more wave energy at the coast. Waves can increase coastal erosion. However, our understanding of the processes by which waves break up coastal sea ice and contribute to Arctic coastal erosion are still limited by a lack of observations. This project will test use of a new technology for better measuring waves in coastal ice. The success of this project will significantly advance our ability to understand the rapidly eroding coastal Arctic. The results will have broad applications for both scientific and coastal Arctic communities, and the project will engage local high school students to build and deploy instruments.This project will test our ability to measure waves in ice-covered regions using seafloor cables. The investigators will measure waves along a seafloor cable and by surface buoys over week-long periods in spring, summer, and fall 2022. Cable measurements will be collected using shore-based instrumentation by collaborators at Sandia National Laboratory, while buoys will be deployed along the length of the cable by airborne or vessel-based methods. These measurements aim to address fundamental questions about coastal ice and its breakup, including: (1) What is the role of waves in breaking up ice? and (2) How do waves change and evolve in areas of coastal ice? The co-location of buoy deployments and cable measurements during this period aims to produce a method that will allow researchers to measure waves using seafloor cables in the future with no additional deployment of equipment. The potential for persistent, high-resolution observations of surface waves using cables opens new avenues of research in this area. The ice-covered season in the Alaskan Arctic is expected to continue to shorten in future years, and the role of waves is likely to be greater. This project will begin building networks to use this technology to answer societally relevant questions, through Arctic science networks and in local 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.

在北极的浅海沿岸地区，与海岸相连的海洋上形成的海冰被称为陆固冰。这些冰的破裂很可能是由融化和海浪作用共同驱动的。在春季破裂之后，夏季没有冰存在，海岸有更多的波浪能量。海浪会加剧海岸的侵蚀。然而，由于缺乏观测，我们对海浪打破沿海海冰并导致北极海岸侵蚀的过程的理解仍然有限。这个项目将测试一种新技术的使用，以更好地测量沿海冰层中的波浪。这个项目的成功将大大提高我们了解快速侵蚀的北极沿海地区的能力。研究结果将广泛应用于科学界和北极沿海社区，该项目将让当地高中生参与建造和部署仪器。这个项目将测试我们使用海底电缆测量冰层覆盖地区波浪的能力。调查人员将在2022年春季、夏季和秋季为期一周的时间里，沿着海底电缆和水面浮标测量海浪。桑迪亚国家实验室的合作者将使用岸基仪器收集电缆的测量数据，而浮标将通过机载或船舶方法沿着电缆的长度部署。这些测量旨在解决有关海岸冰及其破裂的基本问题，包括：(1)波浪在冰破裂中的作用是什么？(2)沿海冰区的波浪是如何变化和演变的？在此期间，浮标部署和电缆测量的共同位置旨在产生一种方法，使研究人员能够在未来使用海底电缆测量波浪，而无需额外部署设备。利用电缆对表面波进行持久、高分辨率观测的潜力，为这一领域的研究开辟了新的途径。预计未来几年，阿拉斯加北极地区的冰雪覆盖季节将继续缩短，海浪的作用可能会更大。该项目将开始建立网络，通过北极科学网络和当地社区，利用这项技术回答与社会相关的问题。该奖项反映了美国国家科学基金会的法定使命，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

Ocean surface gravity wave parameters derived from seafloor DAS near Oliktok Point, Alaska, 2021-2022

2021-2022 年阿拉斯加奥利克托克点附近海底 DAS 推导的海洋表面重力波参数

• DOI: 10.18739/a2pk0736c
• 发表时间: 2023
• 期刊: NSF Arctic Data Center
• 作者: Smith, Maddie;Thomson, Jim;Abbott, Rob;Baker, Michael G.
• 通讯作者: Baker, Michael G.

Morphology and Sediment Dynamics of Blossom Shoals at Icy Cape, Alaska

阿拉斯加冰角花滩的形态和沉积动力学

• DOI: 10.1029/2023jf007398
• 发表时间: 2024
• 期刊: Journal of Geophysical Research: Earth Surface
• 作者: Eidam, E. F.;Thomson, J.;Malito, J. G.;Hošeková, L.
• 通讯作者: Hošeková, L.

Moorings along the seafloor cable route extending offshore from Oliktok Point, Alaska, from April to September of 2023.

2023 年 4 月至 9 月，从阿拉斯加奥利克托克角延伸至近海的海底电缆路线上的系泊点。

• DOI: 10.18739/a24j0b01j
• 发表时间: 2024
• 期刊: NSF Arctic Data Center
• 作者: Thomson, Jim;Smith, Madison
• 通讯作者: Smith, Madison

Performance of moored GPS wave buoys

系泊GPS波浪浮标的性能

• DOI: 10.1080/21664250.2023.2295105
• 发表时间: 2024
• 期刊: Coastal Engineering Journal
• 影响因子: 2.4
• 作者: Collins, Clarence O.;Dickhudt, Patrick;Thomson, Jim;de Paolo, Tony;Otero, Mark;Merrifield, Sophia;Terrill, Eric;Schonau, Martha;Braasch, Lancelot;Paluszkiewicz, Theresa
• 通讯作者: Paluszkiewicz, Theresa