INSPIRE Track 1: Three-Dimensional Seismometer Array at the Homestake Mine

INSPIRE 轨道 1：Homestake 矿的三维地震仪阵列

• 批准号: 1344265
• 负责人: Vuk Mandic
• 金额: $ 43.79万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-15 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1344265&HistoricalAwards=false
• 关键词: INSPIRE; Track; Three; Dimensional; Seismometer

This INSPIRE award is partially funded by the LIGO Research Support program in the Division of Physics in the Directorate for Mathematical and Physical Sciences and Geophysics program in the Division of Earth Sciences in the Directorate of Geosciences. Seismometer arrays are commonly used in geophysics, seismology, and engineering to study the propagation of seismic waves, detect and study their sources, and assess properties of the Earth's interior at various depths. The vast majority of seismometer arrays to date have been surface-based due to the ease of installation. This project will build and operate a dense, underground, three-dimensional array of 13 high-sensitivity broadband seismometers. The array will be located at the Homestake mine, SD, whose accessible depth of 4850 feet and vast horizontal span allow probing a 1-mile underground cube. Bringing together the existing techniques in gravitational physics and geophysics for analysis of transient and stochastic wave signals, this project is expected to give rise to qualitatively new seismic data analysis techniques. Importantly, results of these studies will also have a profound impact on the design of future underground experiments in gravitational physics, such as probes of the Equivalence Principle of Einstein's theory of relativity. Future underground gravitational-wave detectors that will observe otherwise inaccessible signatures of various astrophysical phenomena and of the Big Bang will also be designed based on the seismic noise studies conducted within this project.This project will enable interactions between the geophysics and gravitational physics communities that would be of substantial mutual benefit. Since the future of gravity experiments is arguably underground, it is critical for the gravitational physics community to draw from the large body of knowledge in geophysics on seismic noise and seismic wave propagation. By allowing a team of physicists and geophysicists to work together on the analysis of this unique high-quality data in a mutually interesting environment, this project will lead to breakthroughs in seismic noise tomography. Such breakthroughs will have a broad range of applications and societal implications, ranging from nondestructive material testing to medical diagnosis, geophysical prospecting (detecting mineral deposits and oil), and homeland security (detecting underground cavities). The project will also educate several graduate and undergraduate students, exposing them to the frontiers of research at the intersection of the fields of geophysics and gravitational physics.

该INSPIRE奖是由Ligo研究支持计划在地球科学局地球科学部的数学和物理科学与地球物理学计划局的物理学部部分资助的。 地震计阵列通常用于地球物理，地震学和工程学中，用于研究地震波的传播，检测和研究其来源，并评估各个深度的地球内部的特性。迄今为止，由于安装的易用性，迄今为止的绝大多数地震计阵列都是基于表面的。该项目将建立和运行一个由13个高敏性宽带地震仪的密集，地下，三维阵列。该阵列将位于SD的Homestake Ine，其可进入的深度为4850英尺，水平跨度范围很大，可以探测1英里的地下立方体。将重力物理学和地球物理中现有的技术汇总到分析瞬态和随机波信号的情况下，该项目有望引起定性新的地震数据分析技术。重要的是，这些研究的结果还将对重力物理学未来地下实验的设计产生深远的影响，例如爱因斯坦相对论的等效原理的探针。未来的地下引力波探测器，这些探测器将观察到各种天体物理现象和大爆炸的难以访问的特征，也将基于该项目中进行的地震噪声研究设计。该项目将使地球物理学与重力物理社区之间的相互作用具有实质性互利。由于重力实验的未来可以说是地下的，因此重力物理学界必须从地震噪声和地震波传播的地球物理学知识中汲取大量知识。通过允许一组物理学家和地球物理学家在相互有趣的环境中共同对这一独特的高质量数据进行分析，该项目将导致地震噪声断层扫描的突破。这种突破将具有广泛的应用和社会意义，从无损材料测试到医学诊断，地球物理勘探（检测矿物质和石油）以及国土安全性（检测地下蛀牙）。该项目还将教育几位研究生和本科生，并将其暴露于地球物理和引力物理学领域的交集的研究前沿。