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The 2011 Mineral, Virginia, Earthquake, and Its Significance for Seismic Hazards in Eastern North America

GSA Special Papers

The 2011 Mineral, Virginia, Earthquake, and Its Significance for Seismic Hazards in Eastern North America

Editor(s)

Geological Society of America

DOI:

https://doi.org/10.1130/SPE509

Copyright:

© 2014 The Geological Society of America

ISBN print:

9780813725093

Publication date:

January 01, 2015

Book Chapter

Aftershock imaging using a dense seismometer array (AIDA) after the 2011 Mineral, Virginia, earthquake

Author(s)

Kathy K. Davenport

Kathy K. Davenport

Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, Virginia 24061-0001, USA

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John A. Hole

Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, Virginia 24061-0001, USA

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Diego A. Quiros

Diego A. Quiros

Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, Virginia 24061-0001, USA

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Larry D. Brown

Department of Earth and Atmospheric Sciences, Cornell University, 3120 Snee Hall, Ithaca, New York 14853-1504, USA

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Martin C. Chapman

Martin C. Chapman

Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, Virginia 24061-0001, USA

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Liang Han

Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, Virginia 24061-0001, USA

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Walter D. Mooney

Walter D. Mooney

U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025, USA

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Doi:

https://doi.org/10.1130/2015.2509(15)

Published:

January 01, 2015

The Aftershock Imaging with Dense Arrays (AIDA) project recorded 12 days of high-density seismic array data following the 23 August 2011 Mineral, Virginia (USA), earthquake. AIDA utilized short-period, vertical-component seismographs at 201 locations to record closely spaced data that would reduce spatial aliasing. Interstation correlation enabled a detection threshold between magnitude −1.5 and −2. A joint hypocenter and velocity inversion algorithm was applied to compressional and shear wave arrival times for 300 of the larger events. Traveltime misfits were minimized using a constant velocity of Vp = 6.2–6.25 and Vs = 3.61–3.63. Hypocenter location error estimates for this range of...

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