2012 GSA Annual Meeting in Charlotte
Session No. 154 Tuesday, 6 November 2012
8:00 AM-12:00 PM, Charlotte Convention Center: 207D

T170. Central Virginia Earthquakes of 2011: Geology, Geophysics, and Significance for Seismic Hazards in Eastern North America (GSA Structural Geology and Tectonics Division; GSA Geophysics Division; GSA Environmental and Engineering Geology Division; U.S. Geological Survey)

J. Wright Horton and Martin C. Chapman, Presiding
 Paper #Start Time
154-18:00 AM SHAKING DISTRIBUTION OF THE 23 AUGUST 2011 MW5.8 MINERAL, VIRGINIA, EARTHQUAKE: HOUGH, Susan, U.S. Geological Survey, 525 S. Wilson Avenue, Pasadena, CA 91106, hough@usgs.gov
154-28:15 AM PROPAGATION EFFECTS FROM THE 23 AUGUST 2011 M 5.8 VIRGINIA EARTHQUAKE AND IMPLICATIONS FOR SHAKING HAZARDS: CATCHINGS, Rufus D.1, POWARS, David S.2, HORTON, J. Wright Jr2, and GOLDMAN, Mark R.3, (1) Earthquake Science Center, U.S. Geological Survey, 345 Middlefield Rd. MS 977, Menlo Park, CA 94025, catching@usgs.gov, (2) U.S. Geological Survey, 926A National Center, Reston, VA 20192, (3) Earthquake Hazards Team, U.S. Geological Survey, 345 Middlefield Rd, Menlo Park, CA 94025
154-38:30 AM EXTRAORDINARY DISTANCE LIMITS OF LANDSLIDES TRIGGERED BY THE 2011 VIRGINIA EARTHQUAKE: JIBSON, Randall W., U.S. Geological Survey, Box 25046, MS 966, Denver Federal Center, Denver, CO 80225, jibson@usgs.gov and HARP, Edwin L., U.S. Geological Survey, Box 25046, MS 966, Denver Federal Center, Denver, CO 80225
154-48:45 AM GROUNDWATER-LEVEL CHANGES CAUSED BY THE 2011 MW 5.8 MINERAL VIRGINIA EARTHQUAKE: ROELOFFS, Evelyn, U.S. Geological Survey, Earthquake Science Center, Vancouver, WA 98693, evelynr@usgs.gov, NELMS, David L., U.S. Geological Survey, Virginia Water Science Center, Richmond, VA 23228, and SHEETS, Rodney A. Jr, U.S. Geological Survey, Water Science Field Team, 6480 Doubletree Ave, Columbus, OH 43229
154-59:00 AM FINITE-ELEMENT SIMULATION OF AN INTRAPLATE EARTHQUAKE SETTING - IMPLICATIONS FOR THE VIRGINIA EARTHQUAKE OF AUGUST 23, 2011: COSTAIN, John K., Geosciences, Virginia Tech, Blacksburg, VA 24060, costain@vt.edu
154-69:15 AM GROUND SHAKING AND RESPONSE OF THE WASHINGTON MONUMENT RESULTING FROM THE 2011 MINERAL, VIRGINIA, EARTHQUAKE: WELLS, Donald1, EGAN, John1, GILKERSON, Debra1, and PARET, Terry2, (1) AMEC, 2101 Webster St, 12th FL, Oakland, CA 94612-3066, donald.wells@amec.com, (2) Wiss, Janney, Elstner Associates, Inc, 2000 Powell Street, Suite 1650, Emeryville, CA 94608
154-79:30 AM RELICT PALEOZOIC FAULTS IN THE EPICENTRAL AREA OF THE AUGUST 23, 2011 VIRGINIA EARTHQUAKE: ASSESSING POTENTIAL SOURCES OF REACTIVATION WITH FIELD OBSERVATIONS: HUGHES, K. Stephen and HIBBARD, James, Marine, Earth, and Atmospheric Sciences, North Carolina State University, 2800 Faucette Drive, Rm. 1125 Jordan Hall, Raleigh, NC 27695, kshughes@ncsu.edu
 9:45 AM Break
154-810:00 AM SPATIAL AND TEMPORAL COMPLEXITY OF THE AUGUST 23, 2011 VIRGINIA EARTHQUAKE RUPTURE PROCESS: CHAPMAN, Martin C., Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, mcc@vt.edu
154-910:15 AM OBSERVATIONS OF SEISMIC-WAVE ATTENUATION AND SITE RESPONSE FROM THE AUGUST 23, 2011 MW 5.8 EARTHQUAKE SEQUENCE: MCNAMARA, Daniel E.1, LEEDS, Alena L.1, MEREMONTE, Mark1, BENZ, H.2, ODUM, J.K.3, STEPHENSON, William J.4, GEE, Lind3, and WILLIAMS, Robert5, (1) US Geological Survey, 966 Denver Federal Center, Denver, CO 80225, mcnamara@usgs.gov, (2) U.S. Geol Survey, MS 966, Box 25046, Denver, CO 80225, (3) U.S. Geological Survey, Box 25046 MS-966, Denver, CO 80225, (4) U.S. Geol Survey, Box 25046 MS-966, Denver, CO 80225, (5) U.S. Geological Survey, Box 25046 MS-966, Denver, CO 80401
154-1010:30 AM PRELIMINARY ANALYSIS OF MAGNITUDE 5.8 VIRGINIA EARTHQUAKE CAUSATIVE FAULT AND SUBSIDIARY FAULTS ILLUMINATED BY AFTERSHOCKS: HORTON, J. Wright Jr1, MCNAMARA, Daniel E.2, SHAH, Anjana K.3, GILMER, Amy K.4, CARTER, Aina M.5, BURTON, William C.6, HARRISON, Richard W.1, CARTER, Mark W.1, HERRMANN, Robert B.7, and SNYDER, Stephen L.1, (1) U.S. Geological Survey, 926A National Center, Reston, VA 20192, whorton@usgs.gov, (2) US Geological Survey, 966 Denver Federal Center, Denver, CO 80225, (3) U.S. Geological Survey, Denver Federal Center, POB 25046, MS 964, Denver, CO 80225, (4) Division of Geology and Mineral Resources, Virginia Department of Mines, Minerals and Energy, 900 Natural Resources Drive, Suite 500, Charlottesville, VA 22903, (5) Louisa, VA 23093, (6) U.S. Geological Survey, MS 926A, Reston, VA 20192, (7) Earth and Atmospheric Sciences, St. Louis University, 203 O'Neil Hall, 3642 Lindell Blvd, St. Louis, MO 63108
154-1110:45 AM AIRBORNE MAGNETIC, GRAVITY AND RADIOMETRIC DATA ILLUMINATE SUBSURFACE GEOLOGY ASSOCIATED WITH THE M5.8 AUGUST 23, 2011 LOUISA COUNTY, VA EARTHQUAKE: SHAH, Anjana K., U.S. Geological Survey, Denver Federal Center, POB 25046, MS 964, Denver, CO 80225, ashah@usgs.gov, HORTON, J. Wright Jr, U.S. Geological Survey, 926A National Center, Reston, VA 20192, and GILMER, Amy K., Division of Geology and Mineral Resources, Virginia Department of Mines, Minerals and Energy, 900 Natural Resources Drive, Suite 500, Charlottesville, VA 22903
154-1211:00 AM STRUCTURAL SETTING OF THE 2011 M5.8 VIRGINIA EARTHQUAKE FROM SEISMIC REFLECTION DATA: PRATT, Thomas L., U.S. Geological Survey c/o Department of Earth and Space Sciences, University of Washington, Box 357940, Seattle, WA 98195-1310, tpratt@ocean.washington.edu
154-1311:15 AM AFTERSHOCK IMAGING WITH DENSE ARRAYS (AIDA): 3D REFLECTION IMAGING OF LOCAL STRUCTURE USING AFTERSHOCK SOURCES RECORDED BY DENSE DEPLOYMENT OF EARTHSCOPE PORTABLE INSTRUMENTS FOLLOWING THE AUGUST 23, 2011, MW 5.8, VIRGINIA EARTHQUAKE: BROWN, Larry1, QUIROS, Diego1, DAVENPORT, Kathy2, HOLE, John A.2, HAN, Liang2, CHEN, Chen1, and MOONEY, Walter3, (1) Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853, ldb7@cornell.edu, (2) Geosciences, Virginia Tech, Blacksburg, VA 24061, (3) USGS, 345 MIddlefield Rd, MS 977, Menlo Park, CA 94025
154-1411:30 AM IMPLICATIONS OF OBSERVED LIQUEFACTION DURING THE 2011 CENTRAL VIRGINIA EARTHQUAKE ON REGIONAL PALEOLIQUEFACTION STUDIES: GREEN, Russell A.1, LASLEY, Samuel2, and MAURER, Brett2, (1) Department of Civil and Environmental Engineering, Virginia Tech, 120B Patton Hall, Blacksburg, VA 24061, rugreen@vt.edu, (2) Department of Civil and Environmental Engineering, Virginia Tech, 20 Patton Hall, Blacksburg, VA 24061
154-1511:45 AM GEOMORPHIC EVIDENCE FOR PERSISTENT FAULTING CONSISTENT WITH THE 23 AUGUST, 2011 LOUISA COUNTY, VA EARTHQUAKE: BERTI, Claudio1, PAZZAGLIA, Frank J.1, MELTZER, Anne S.1, and HARRISON, Richard W.2, (1) Earth and Environmental Sciences, Lehigh University, 1 West Packer Ave, Bethlehem, PA 18015, clb208@lehigh.edu, (2) U.S. Geological Survey, 926A National Center, Reston, VA 20192

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