Vehicle induced seismic effects at a gravitational wave observatory
Document Type
Journal Article
Publisher
American Institute of Physics
Faculty
Faculty of Computing, Health and Science
School
School of Computer and Information Science
RAS ID
2311
Abstract
The seismic signature of a vehicle traveling on the site of the Australian International Gravitational Observatory has been studied using a two-axis seismometer. The main laboratory strongly attenuated the vehicle-induced seismic noise across all frequencies. We find that the magnitude of the vehicle-induced seismic signal followed a d−γ" tabindex="0" id="MathJax-Element-1-Frame">d power law, with d the source–detector distance and γ≈1.7±0.4." tabindex="0" id="MathJax-Element-2-Frame">γ≈1.7±0.4. The results are indicative of strong attenuation of seismic disturbances and are consistent with other measurements of low-amplitude Rayleigh wave attenuation in similar sandy soil types, a highly desirable property for the site of a gravitational wave observatory. This analysis provides a tool for estimating the magnitude of vehicle-induced seismic noise at the laboratory buildings from more distant sources on and around the site.
DOI
10.1063/1.1614411
Comments
Coward, D., Blair, D., Burman, R., & Zhao, C. (2003). Vehicle-induced seismic effects at a gravitational wave observatory. Review of scientific instruments, 74(11), 4846-4854. Available here