HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (16) Citing Articles via Google Scholar Google Scholar Articles by Chang, S.-J. Articles by Langston, C. A. Search for Related Content GeoRef GeoRef Citation

Joint Analysis of Teleseismic Receiver Functions and Surface Wave Dispersion using the Genetic Algorithm

School of Earth and Environmental Sciences
Seoul National University
Seoul 151-747, Korea
baagce{at}snu.ac.kr
(S.-J.C., C.-E.B.)
Center for Earthquake Research and Information
University of Memphis
Memphis, Tennessee 38152-3050
(C.A.L.)

Manuscript received 2 June 2003.

Teleseismic P-wave receiver function data and Rayleigh-wave phase velocity measurements are combined using the genetic algorithm, a global optimization technique, to model crustal structure in southern Korea. The two datasets complement each other because receiver functions are sensitive to shear-wave velocity contrasts in layered structures, while surface wave dispersion is sensitive to averages of shear-wave velocities. The genetic algorithm is more useful than linearized inversion in regions where there is little a priori information about local velocity structure because it is not sensitive to the initial model. The stability and variability of resulting crustal model parameters are quantified by using a Monte Carlo technique in specifying a suite of initial models. Depths to the Moho discontinuity in southern Korea were estimated to be 29-30 km for stations near the western coast and 33-36 km for inland stations. A well-resolved crustal low-velocity zone was inferred for some stations.