Advances in Studies of Heterogeneities in the Earth's Lithosphere: The Keiiti Aki Volume II

by Yehuda Ben-Zion (Editor), William H. K. Lee (Editor)

Overview

heterogeneous structures, especially when the data quality is not very high. GAUTIER et al. perform tomographic inversion of local earthquake arrival times for crustal structure and earthquake locations in the actively rifting Gulf of Corinth. The velocities image the rift basin and the hypocenters image a regional-scale detachment fault. Inthe third group of papers, SNIEDER reviews theoretical concepts governing changes of coda waves due to small localized perturbations in the medium properties or source location, and describes how to estimatethe resulting meanand varianceof the travel-time perturbations. CAMPILLO reviews theoretical results on properties of coda waves in asymptotic multiple-scattering regime, and how to construct Green functions from coda waves and ambient seismic noise. The results are illustrated with applications of imaging velocity structures in Alaska and California. WEGLER et al. use the theory of radiative transfer to model the transport of seismic energy in 2-D and 3-D acoustic random media. The theory accounts correctly for the direct wave front, envelope broadening caused by multiple forward scattering, and late coda caused by multiple wide-angle scattering. However, for very heterogeneous media the radiative transfer results difier from those of the full wave equation. ZENG develops a set of scattered wave energy equations that include scattered surface waves and conversions of body waves to surface wave scattering. Numerical results show that scattered wave energy can be approximated well by body-wave scattering at earlier times and short distances, but at large distances scattered surface waves dominate the scattered body waves at surface stations.

Product Details

ISBN-13:	9783764375799
Publisher:	Birkhäuser Basel
Publication date:	05/22/2006
Series:	Pageoph Topical Volumes
Edition description:	2006
Pages:	370
Product dimensions:	6.69(w) x 9.61(h) x 0.03(d)

Table of Contents

Modelling Rupture Dynamics of a Planar Fault in 3-D Half Space by Boundary Integral Equation Method: An Overview.- Geological Observations of Damage Asymmetry in the Structure of the San Jacinto, San Andreas and Punchbowl Faults in Southern California: A Possible Indicator for Preferred Rupture Propagation Direction.- The Applicability of Modern Methods of Earthquake Location.- Development and Applications of Double-difference Seismic Tomography.- Estimating Crustal Heterogeneity from Double-difference Tomography.- A New Passive Tomography of the Aigion Area (Gulf of Corinth, Greece) from the 2002 Data Set.- The Theory of Coda Wave Interferometry.- Phase and Correlation in ‘Random’ Seismic Fields and the Reconstruction of the Green Function.- Modeling Full Seismogram Envelopes Using Radiative Transfer Theory with Born Scattering Coefficients.- Scattered Surface Wave Energy in the Seismic Coda.- Constituents of Vertical-component Coda Waves at Long Periods.- Temporal Changes of Shallow Seismic Velocity Around the Karadere-Düzce Branch of the North Anatolian Fault and Strong Ground Motion.- Crustal Heterogeneity in the Source Region of the 2004 Mid Niigata Prefecture Earthquake: Inversion Analysis of Coda Envelopes.- In Memory of Keiiti Aki, 1930–2005.- Publication List of Keiiti Aki.