Characterizing seismic noise in the 2-20 Hz band at a gravitational wave observatory

David Coward, Jane Turner, David Blair, K. Galybin

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We present a study of seismic noise, using an array of seismic sensors, at the Australian International Gravitational Observatory. We show that despite excellent attenuation of 2-20 Hz seismic waves from the soil properties of the site, which is confirmed by a specific experiment, there are important technical issues associated with local sources of vibration originating from within the laboratory buildings. In particular, we identify vibrations from air-filtration equipment propagating throughout the site. We find significant building resonances in the 2-13 Hz band and identify seismic noise originating from regional mine blasts hundreds of kilometers distant. All these noise sources increase the performance requirements on vibration isolation in the 2-20 Hz frequency band. (C) American Institute of Physics.
Original languageEnglish
Pages (from-to)044501-1-044501-5
JournalReview of Scientific Instruments
Volume76
Issue number4
DOIs
Publication statusPublished - 2005

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