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A 3D Broadband Seismometer Array Experiment at the Homestake Mine

Mandic, Vuk and Tsai, Victor C. and Pavlis, Gary L. and Prestegard, Tanner and Bowden, Daniel C. and Meyers, Patrick and Caton, Ross (2018) A 3D Broadband Seismometer Array Experiment at the Homestake Mine. Seismological Research Letters, 89 (6). pp. 2420-2429. ISSN 0895-0695. http://resolver.caltech.edu/CaltechAUTHORS:20180822-151337473

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Abstract

Seismometer deployments are often confined to near the Earth’s surface for practical reasons, despite the clear advantages of deeper seismometer installations related to lower noise levels and more homogeneous conditions. Here, we describe a 3D broadband seismometer array deployed at the inactive Homestake Mine in South Dakota, which takes advantage of infrastructure originally setup for mining and is now used for a range of scientific experiments. The array consists of 24 stations, of which 15 were underground, with depths ranging from 300 ft (91 m) to 4850 ft (1478 m), and with a 3D aperture of ∼1.5 km in each direction, thus spanning a 3D volume of about 3.4 km^3. We describe unique research opportunities and challenges related to the 3D geometry, including the generally low ambient noise levels, the strong coherency between observed event waveforms across the array, and the technical challenges of running the network. This article summarizes preliminary results obtained using data acquired by the Homestake array, illustrating the range of possible studies supported by the data.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1785/0220170228DOIArticle
ORCID:
AuthorORCID
Tsai, Victor C.0000-0003-1809-6672
Bowden, Daniel C.0000-0003-3332-5146
Additional Information:© 2018 Seismological Society of America. Published Online 22 August 2018. The authors thank the staff at the Sanford Underground Research Facility and Program for the Array Seismic Studies of the Continental Lithosphere (PASSCAL) for assistance, particularly the help of Tom Regan, Jaret Heise, Jamey Tollefson, and Bryce Pietzyk. Terry Stigall made important technical contributions to operate and maintain the array. The authors also thank C. Langston and an anonymous reviewer for comments. The seismic instruments used for this array were provided by the Incorporated Research Institutions for Seismology (IRIS) through the PASSCAL Instrument Center at New Mexico Tech. Data collected are available through the IRIS Data Management Center. The facilities of the IRIS Consortium are supported by the National Science Foundation under Cooperative Agreement EAR‐1261681 and the Department of Energy (DOE) National Nuclear Security Administration. This work was supported by National Science Foundation INSPIRE Grant PHY1344265. Data and Resources: Data collected by the Homestake array and presented here are available at the Incorporated Research Institutions for Seismology (IRIS) Data Management Center available at www.iris.edu (last accessed July 2018) in 2018, designation X6. Also used are data for the array network facility of USArray website available at http://anf.ucsd.edu/events/ (last accessed April 2017).
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
NSFEAR‐1261681
Department of Energy (DOE)UNSPECIFIED
NSFPHY-1344265
Record Number:CaltechAUTHORS:20180822-151337473
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180822-151337473
Official Citation:Vuk Mandic, Victor C. Tsai, Gary L. Pavlis, Tanner Prestegard, Daniel C. Bowden, Patrick Meyers, Ross Caton; A 3D Broadband Seismometer Array Experiment at the Homestake Mine. Seismological Research Letters ; 89 (6): 2420–2429. doi: https://doi.org/10.1785/0220170228
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89064
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Aug 2018 22:23
Last Modified:30 Oct 2018 17:11

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