T170. Central Virginia Earthquakes of 2011: Geology, Geophysics, and Significance for Seismic Hazards in Eastern North America

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 Jr and Martin C. Chapman, Advocates
Paper #
Start Time
8:00 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
8:15 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
8:30 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
8:45 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
9:15 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
9:30 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
10:00 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
10:15 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
10:30 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
10:45 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
11:00 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
11:15 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
11:30 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
11:45 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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