S12C:
Understanding the Influence of Near-Surface Materials on Seismic Wave Amplitudes: Methods for Measuring, Modeling, and Using Site Response I

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Session ID#: 32837

Session Description:
Changes in seismic wave amplitudes caused by near-surface materials are crucial to many aspects of earthquake hazard assessments. These site response and basin effect estimates are used to adjust amplitudes of recordings used to determine ground-motion prediction equations, to quantify the amplification of ground motions in urban areas and at specific sites, and to extrapolate between bedrock ground motions and observed surface ground motions. This session is intended to explore and compare methods used to understand the influence of shallow strata on ground motions. Contributions can include presentations on theoretical studies and modeling of near-surface effects, development of methods for measuring near-surface material properties, and direct measurements of the influence of shallow materials on ground motions.
Primary Convener:  Thomas L Pratt, U.S. Geological Survey, Geologic Hazards Science Center, Reston, United States
Conveners:  William J Stephenson, USGS Central Region Offices Denver, Denver, United States and Chris H Cramer, University of Memphis, Center for Earthquake Research and Information, Memphis, United States
Chairs:  Chris H Cramer, University of Memphis, Center for Earthquake Research and Information, Memphis, United States, Thomas L Pratt, U.S. Geological Survey, Geologic Hazards Science Center, Reston, United States and William J Stephenson, U.S. Geological Survey, Denver, CO, United States
OSPA Liaison:  Thomas L Pratt, U.S. Geological Survey, Geologic Hazards Science Center, Reston, United States

Cross-Listed:
  • NH - Natural Hazards
  • NS - Near Surface Geophysics
Index Terms:

4307 Methods [NATURAL HAZARDS]
7212 Earthquake ground motions and engineering seismology [SEISMOLOGY]

Abstracts Submitted to this Session:

Empirical Site Amplification Factors Incorporating Soil Nonlinearity in Taiwan (265810)
Chun-Hsiang Kuo, NCREE National Center for Research on Earthquake Engineering of Taiwan, Taipei, Taiwan, Chi-Hsuan Chung, NCU National Central University of Taiwan, Department of Earth Science, Jhongli, Taiwan, Lin Che-Min, National Center for Research on Earthquake Engineering, National Institutes of Applied Research, Taipei, Taiwan, Jyun-Yan Huang, National Center for Research on Earthquake Engineering, Taipei, Taiwan and Kuo-Liang Wen, National Central University, Institute of Geophysice, Taoyuan, Taiwan
Non-linear and plastic soil response from strong ground motion detected using the ambient seismic field (213230)
Loïc Viens, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, Marine Denolle, Harvard University, Department of Earth and Planetary Sciences, Cambridge, United States and Naoshi Hirata, Earthquake Research Institute, University of Tokyo, Tokyo, Japan
Imaging and characterizing shallow sedimentary strata using teleseismic arrivals recorded on linear arrays: An example from the Atlantic Coastal Plain of the southeastern U.S. (257197)
Thomas L Pratt, U.S. Geological Survey, Geologic Hazards Science Center, Reston, United States
Ground Motions Simulations and Site Effects in the Quito Basin (Ecuador) (207511)
Francoise Courboulex1, David Castro-Cruz2, Aurore Laurendeau3, Luis F Bonilla4, Etienne Bertrand2, Diego Mercerat2 and Alexandra Alvarado5, (1)Université Côte d’Azur, IRD, CNRS, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (2)CEREMA, Laboratoire de Nice, Nice, France, (3)IRSN Institut de Radioprotection et de Sûreté Nucléaire, Fontenay Aux Roses Cedex, France, (4)IFSTTAR, Bouguenais Cedex, France, (5)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador
Ambient Noise Tomography at Regional and Local Scales in Southern California using Rayleigh Wave Phase Dispersion and Ellipticity (280395)
Elizabeth Berg1, Fan-Chi Lin2, Hongrui Qiu3, Yadong Wang1, Amir A Allam4, Robert W Clayton5 and Yehuda Ben-Zion6, (1)University of Utah, Department of Geology & Geophysics, Salt Lake City, UT, United States, (2)University of Utah, Salt Lake City, UT, United States, (3)China University of Geosciences, Wuhan, China, (4)University of Alaska Fairbanks, Fairbanks, United States, (5)California Institute of Technology, Pasadena, CA, United States, (6)USC, Department of Earth Sciences, Los Angeles, CA, United States
Multi-method Near-surface Geophysical Surveys for Site Response and Earthquake Damage Assessments at School Sites in Washington, USA (297199)
Recep Cakir1, Timothy J Walsh2 and David K. Norman2, (1)Washington State Department of Natural Resources, Washington Geological Survey, Port Angeles, WA, United States, (2)Washington State Department of Natural Resources, Washington Geological Survey, Olympia, WA, United States

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