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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
207D (Charlotte Convention Center)

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, Advocates
Paper #
Start Time
1
8:00 AM
SHAKING DISTRIBUTION OF THE 23 AUGUST 2011 MW5.8 MINERAL, VIRGINIA, EARTHQUAKE (Invited Presentation)
HOUGH, Susan, U.S. Geological Survey, 525 S. Wilson Avenue, Pasadena, CA 91106, hough@usgs.gov, hough@usgs.gov
2
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. Wright2 and GOLDMAN, Mark R.3, (1)Earthquake Science Center, U.S. Geological Survey, 345 Middlefield Rd. MS 977, Menlo Park, CA 94025, (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, catching@usgs.gov, catching@usgs.gov
3
8:30 AM
EXTRAORDINARY DISTANCE LIMITS OF LANDSLIDES TRIGGERED BY THE 2011 VIRGINIA EARTHQUAKE
JIBSON, Randall W. and HARP, Edwin L., U.S. Geological Survey, Box 25046, MS 966, Denver Federal Center, Denver, CO 80225, jibson@usgs.gov, jibson@usgs.gov
Handouts
  • Virginia EQ-2012 GSA-small.pptx (20.5 MB)
    • 4
    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, NELMS, David L., U.S. Geological Survey, Virginia Water Science Center, Richmond, VA 23228 and SHEETS, Rodney A., U.S. Geological Survey, Water Science Field Team, 6480 Doubletree Ave, Columbus, OH 43229, evelynr@usgs.gov, evelynr@usgs.gov
    5
    9:00 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, costain@vt.edu
    6
    9:15 AM
    GROUND SHAKING AND RESPONSE OF THE WASHINGTON MONUMENT RESULTING FROM THE 2011 MINERAL, VIRGINIA, EARTHQUAKE
    WELLS, Donald, AMEC, 2101 Webster St, 12th FL, Oakland, CA 94612-3066, EGAN, John, AMEC, 2101 Webster St, 12th FL, Oakland, CA 94612, MURPHY, Debra G., AMEC E&I, 2101 Webster St, 12th Floor, Oakland, CA 94612-3066 and PARET, Terry, Wiss, Janney, Elstner Associates, Inc, 2000 Powell Street, Suite 1650, Emeryville, CA 94608, donald.wells@amec.com, donald.wells@amec.com
    7
    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, kshughes@ncsu.edu
    Handouts
  • 2012_Hughes_Relict_Faults_VA_EQ_Charlotte.pdf (11.4 MB)
    •  
    9:45 AM
    Break
    8
    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, mcc@vt.edu
    9
    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.2, MEREMONTE, Mark2, BENZ, H.3, ODUM, J.K.4, STEPHENSON, William J.5, GEE, Lind4 and WILLIAMS, Robert6, (1)US Geological Survey, 1711 Illinois Street, Golden, CO 80401, (2)US Geological Survey, 966 Denver Federal Center, Denver, CO 80225, (3)U.S. Geol Survey, MS 966, Box 25046, Denver, CO 80225, (4)U.S. Geological Survey, Box 25046 MS-966, Denver, CO 80225, (5)U.S. Geol Survey, Box 25046 MS-966, Denver, CO 80225, (6)U.S. Geological Survey, Box 25046 MS-966, Denver, CO 80401, mcnamara@usgs.gov, mcnamara@usgs.gov
    10
    10:30 AM
    PRELIMINARY ANALYSIS OF MAGNITUDE 5.8 VIRGINIA EARTHQUAKE CAUSATIVE FAULT AND SUBSIDIARY FAULTS ILLUMINATED BY AFTERSHOCKS
    HORTON, J. Wright1, MCNAMARA, Daniel E.2, SHAH, Anjana K.3, GILMER, Amy K.4, CARTER, Aina M.5, BURTON, William C.6, HARRISON, Richard W.7, CARTER, Mark W.1, HERRMANN, Robert B.8 and SNYDER, Stephen L.1, (1)U.S. Geological Survey, 926A National Center, Reston, VA 20192, (2)US Geological Survey, 1711 Illinois Street, Golden, CO 80401, (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 National Center, Reston, VA 20192, (7)U.S. Geological Survey, MS. 926A, National Center, Reston, VA 20192, (8)Earth and Atmospheric Sciences, St. Louis University, 203 O'Neil Hall, 3642 Lindell Blvd, St. Louis, MO 63108, whorton@usgs.gov, whorton@usgs.gov
    11
    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, HORTON, J. Wright, 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, ashah@usgs.gov, ashah@usgs.gov
    12
    11:00 AM
    STRUCTURAL SETTING OF THE 2011 M5.8 VIRGINIA EARTHQUAKE FROM SEISMIC REFLECTION DATA (Invited Presentation)
    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, tpratt@ocean.washington.edu
    13
    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, Diego2, DAVENPORT, Kathy3, HOLE, John A.3, HAN, Liang3, CHEN, Chen1 and MOONEY, Walter4, (1)Earth and Atmospheric Sciences, Cornell University, Snee Hall, Ithaca, NY 14853, (2)Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853, (3)Geosciences, Virginia Tech, Blacksburg, VA 24061, (4)USGS, 345 MIddlefield Rd, MS 977, Menlo Park, CA 94025, ldb7@cornell.edu, ldb7@cornell.edu
    14
    11:30 AM
    IMPLICATIONS OF OBSERVED LIQUEFACTION DURING THE 2011 CENTRAL VIRGINIA EARTHQUAKE ON REGIONAL PALEOLIQUEFACTION STUDIES
    GREEN, Russell A., Department of Civil and Environmental Engineering, Virginia Tech, 120B Patton Hall, Blacksburg, VA 24061, LASLEY, Samuel, Department of Civil and Environmental Engineering, Virginia Tech, 20 Patton Hall, Blacksburg, VA 24061 and MAURER, Brett W., Department of Civil and Environmental Engineering, Virginia Tech, Patton Hall, Blacksburg, VA 24061, rugreen@vt.edu, rugreen@vt.edu
    15
    11:45 AM
    GEOMORPHIC EVIDENCE FOR PERSISTENT FAULTING CONSISTENT WITH THE 23 AUGUST, 2011 LOUISA COUNTY, VA EARTHQUAKE
    BERTI, Claudio, Earth and Environmental Sciences, Lehigh University, 1 W. Packer Ave, Bethlehem, PA 18015, PAZZAGLIA, Frank J., Earth and Environmental Sciences, Lehigh University, 1 W Packer Ave, Bethlehem, PA 18015-3001, MELTZER, Anne S., Earth and Environmental Sciences, Lehigh University, 1 West Packer Ave, Bethlehem, PA 18015 and HARRISON, Richard W., U.S. Geological Survey, MS. 926A, National Center, Reston, VA 20192, clb208@lehigh.edu, clb208@lehigh.edu
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