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arXiv · 1006.0678

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

Jan Harms·Fausto Acernese·Fabrizio Barone·Imre Bartos·Mark Beker·J. F. J. van den Brand·Nelson Christensen·Michael Coughlin·Riccardo DeSalvo·Steven Dorsher·Jaret Heise·Shivaraj Kandhasamy·Vuk Mandic·Szabolcs Márka·Guido Müller·Luca Naticchioni·Thomas O'Keefe·David S. Rabeling·Angelo Sajeva·Tom Trancynger·Vinzenz Wand
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Abstract

An array of seismometers is being developed at the Sanford Underground Laboratory, the former Homestake mine, in South Dakota 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.

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Jan Harms, Fausto Acernese, Fabrizio Barone, Imre Bartos, Mark Beker, J. F. J. van den Brand, Nelson Christensen, Michael Coughlin, Riccardo DeSalvo, Steven Dorsher, Jaret Heise, Shivaraj Kandhasamy, Vuk Mandic, Szabolcs Márka, Guido Müller, Luca Naticchioni, Thomas O'Keefe, David S. Rabeling, Angelo Sajeva, Tom Trancynger, Vinzenz Wand. 2010-06-03. Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota. https://doi.org/10.1088/0264-9381%2F27%2F22%2F225011

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