Collaborative Research/EAGER: Toward Long-Distance Ocean and Seismic Sensing on Optical Telecommunications Infrastructure

合作研究/EAGER：在光通信基础设施上实现长距离海洋和地震传感

• 批准号: 2210938
• 负责人: Leo Hollberg
• 金额: $ 4.97万
• 依托单位: Stanford University
• 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: 2022-02-01 至 2023-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2210938&HistoricalAwards=false
• 关键词: Collaborative; Research; EAGER; Toward; Long

The PIs request EAGER funding to test the feasibility of making undersea observations of seismic and oceanic processes across ocean basins on existing telecommunications cables. The project will provide partial support for two graduate students The PIs plan to compare three fiber-optical methods, Ultra-stable Laser Interferometry (ULI), Distributed Acoustic Sensing (DAS) and a long-range polarization-based method simultaneously on a telecom cable on the seafloor of Puget Sound, in Saratoga Passage, between Whidbey and Camano Island. The physics linking geophysics and ULI signals and other new techniques, like Distributed Acoustic Sensing (DAS) and the new long-range polarization-based method is limited and needs to be investigated further. There haven’t been field demonstrations showing the potential capability to resolve signals from earthquakes, tidal signals, or whale vocalizations. The current installation gives the PIs an ideal opportunity to compare the three fiber-optical methods simultaneously on a single cable with individual seismic signals arriving at various angles and varying tidal currents. These measurements would provide the first data on relative sensitivities and provide preliminary data to support future NSF proposals.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.

PI要求EAGER提供资金，以测试在现有电信电缆上对跨海洋盆地的地震和海洋过程进行海底观测的可行性。该项目将为两名研究生提供部分支持。PI计划在皮吉特湾海底的电信电缆上同时比较三种光纤方法，即超稳定激光干涉测量法（ULI）、分布式声学传感（DAS）和基于远程偏振的方法。皮吉特湾位于萨拉托加海峡，位于惠德贝岛和卡马诺岛之间。物理物理学和ULI信号和其他新技术，如分布式声学传感（DAS）和新的远程极化为基础的方法是有限的，需要进一步研究。目前还没有现场演示显示其潜在的能力，以解决信号从地震，潮汐信号，或鲸鱼发声。目前的安装为PI提供了一个理想的机会，可以在一条电缆上同时比较三种光纤方法，以及以不同角度和不同潮流到达的单个地震信号。这些测量将提供第一个相对敏感性的数据，并提供初步的数据，以支持未来的NSF proposals.This award reflects NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。