Bulletin of the
Seismological Society of America

Volume 89 - Number 1 - February 1999

Contents

Deaggregation of Probabilistic Ground Motions in the Central and Eastern United States
    Stephen Harmsen, David Perkins, and Arthur Frankel

Seismic Coupling of Interface Modes in Sedimentary Basins: A Recipe for Disaster
    Cinna Lomnitz, Jorge Flores, Octavio Novaro, Thomas H. Seligman, and Raúl Esquivel

Spatial Distribution of High-Frequency Energy Radiation on the Fault of the 1995 Hyogo-Ken Nanbu, Japan, Earthquake (M_w6.9) on the Basis of the Seismogram Envelope Inversion
    Hisashi Nakahara, Haruo Sato, Masakazu Ohtake, and Takeshi Nishimura

A Semi-empirical Method for Simulating Strong Ground Motions Based on Variable-Slip Rupture Models for Large Earthquakes
    Kazuo Dan and Toshiaki Sato

3D Elastic Finite-Difference Modeling of Seismic Motion Using Staggered Grids with Nonuniform Spacing
    Arben Pitarka

3D Displacement Finite Differences and a Combined Memory Optimization
    Peter Moczo, Mária Lucká, Jozef Kristek, and Miriam Kristeková

Beginning of Earthquakes Modeled with the Griffith's Fracture Criterion
    Tamao Sato and Hiroo Kanamori

Defining Seismogenic Sources from Historical Earthquake Felt Reports
    Paolo Gasperini, Filippo Bernardini, Gianluca Valensise, and Enzo Boschi

An Alternative Method for a Reliable Estimation of Seismicity with an Application in Greece and the Surrounding Area
    C. Papazachos

Patterns of Historical Earthquake Rupture in the Iranian Plateau
    Manuel Berberian and Robert S. Yeats

Deformation and Quaternary Faulting in Southeast Missouri across the Commerce Geophysical Lineament
    W. J. Stephenson, J. K. Odum, R. A. Williams, T. L. Pratt, R. W. Harrison, and D. Hoffman

Nature of Narrow-Band Signals at 2.083 Hz
    Götz H. R. Bokelmann and Stefan Baisch

Wide-Aperture Beamforming of Depth Phases by Timescale Contraction
    Catherine R. D. Woodgold

Empirical Green's Functions: A Comparison between Pulse Width Measurements and Deconvolution by Spectral Division
    Nicholas Deichmann

Deconvolution of Teleseismic Body Waves for Enhancing Structure beneath a Seismometer Array
    Xiao-Qing Li and John L. Nábelek

Using a Genetic Algorithm to Model Broadband Regional Waveforms for Crustal Structure in the Western United States
    Joydeep Bhattacharyya, Anne F. Sheehan, Kristy Tiampo, and John Rundle

High-Frequency Attenuation in the Crust and Upper Mantle of the Northern Tien Shan
    Vladislav G. Martynov, Frank L. Vernon, Robert J. Mellors, and Gary L. Pavlis

Velocity Structure of the Upper Crust under the San Francisco Volcanic Field, Arizona
    Bashir A. Durrani, Diane I. Doser, G. R. Keller, and Thomas M. Hearn

Microtremor Measurements Used to Map Thickness of Soft Sediments
    Malte Ibs-von Seht and Jürgen Wohlenberg

Analysis of Earthquake Recordings Obtained from the Seafloor Earthquake Measurement System (SEMS) Instruments Deployed off the Coast of Southern California
    David M. Boore and Charles E. Smith

Intermediate-Term Earthquake Prediction Using the Modified Time-to-Failure Method in Southern California
    Daniel J. Brehm and Lawrence W. Braile

Outlier Detection from a Mixture Distribution When Training Data Are Unlabeled
    Stephan R. Sain, H. L. Gray, Wayne A. Woodward, and Mark D. Fisk

Short Notes

Rupture Depths and Source Processes of the 1997-1998 Earthquake Sequence in Central Italy
    Marco Olivieri and Göran Ekström

Continuous Monitoring of Ground-Motion Parameters
    Hiroo Kanamori, Philip Maechling, and Egill Hauksson

Basin Waves on a Seafloor Recording of the 1990 Upland, California, Earthquake: Implications for Ground Motions from a Larger Earthquake
    David M. Boore

Lateral Variation of Pn and Lg Attenuation at the CDSN Station LSA
    C. C. Reese, R. R. Rapine, and J. F. Ni

Comment and Reply

Comment on ``The Spectral Element Method: An Efficient Tool to Simulate the Seismic Response of 2D and 3D Geological Structures,'' by D. Komatitsch and J.-P. Vilotte
    E. Faccioli and A. Quarteroni

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Posted: 01/28/99