Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota

J. Harms, F. Acernese, F. Barone, I. Bartos, M. Beker, J. F.J. Van Den Brand, N. Christensen, M. Coughlin, R. DeSalvo, S. Dorsher, J. Heise, S. Kandhasamy, V. Mandic, S. Márka, G. Mueller, L. Naticchioni, T. O'Keefe, D. S. Rabeling, A. Sajeva, T. TrancyngerV. Wand

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An array of seismometers is being developed at the Sanford Underground Laboratory, the formerHomestake mine, in SouthDakota to study the properties of underground seismic fields and Newtonian noise, and to investigate the possible advantages of constructing a third-generation gravitational-wave detector underground. Seismic data were analyzed to characterize seismic noise and disturbances. External databases were used to identify sources of seismic waves: ocean-wave data to identify sources of oceanic microseisms and surface wind-speed data to investigate correlations with seismic motion as a function of depth. In addition, sources of events contributing to the spectrum at higher frequencies are characterized by studying the variation of event rates over the course of a day. Long-term observations of spectral variations provide further insight into the nature of seismic sources. Seismic spectra at three different depths are compared, establishing the 4100 ft level as a world-class low seismic-noise environment.

Original languageEnglish (US)
Article number225011
JournalClassical and Quantum Gravity
Issue number22
StatePublished - Nov 21 2010


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