EAGER: Exploratory research in non-Fourier tidal analysis of hydrothermal time series

这项研究是作为探索性研究的早期概念基金(EIGER)资助的。这项工作的重点是测试地球和海洋潮汐是否对陆地和海底热液系统中的地壳流体流动产生影响。它使用了一种非传统的非傅立叶方法，与通常使用的标准傅里叶时间序列方法相反，从地球、太阳和月球的位置所产生的引力势导出的强迫函数被用作强迫函数。将在Admiralty方法时间序列方法的基础上开发建模软件，该方法使用伪正弦函数，其随时间变化的幅度和相位受行星的相对位置调制。该模型将利用陆地(冰岛和黄石公园)和海底(胡安德富卡海脊奋进段和大西洋中部海脊)具有良好特征的热液系统的化学和温度数据进行测试。这项工作的更广泛影响包括适用于地热行业和美国国家科学基金会资助的Ridge 2000计划，该计划包括通过海底热液喷口模拟地球地幔和海洋之间的流体交换。数据产品和软件将在出版物和因特网上提供。

This research was funded as an Early Concept Grant for Exploratory Research (EAGER). The work focuses on testing whether earth and ocean tides exert an impact on crustal fluid flow in land and seafloor hydrothermal systems. It uses an unconventional, non-Fourier approach in which forcing functions, derived from the gravitational potentials due to the positioning of the Earth, Sun, and Moon, are used as forcing functions, as opposed to the standard Fourier time series approach that is usually used. Modeling software will be developed that builds off the Admiralty Method time-series approach that uses a pseudo-sinusoidal function whose time-varying amplitude and phase are modulated by the relative positions of the planets. The model will be tested with chemical and temperature data from well characterized hydrothermal systems on land (Iceland and Yellowstone) and on the seafloor (sites on the Endeavour segment of the Juan de Fuca Ridge and on the Mid-Atlantic Ridge). Broader impacts of the work include applicability to the geothermal industry and to the NSF-funded Ridge 2000 program which includes the modeling of fluid exchange between the Earth's mantle and ocean via seafloor hydrothermal vents. Data products and software will be made available in publications and on the Internet.