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

This Article Full Text (PDF) References 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 HighWire Citing Articles via Google Scholar Google Scholar Articles by PAPAGEORGIOU, A. S. Search for Related Content GeoRef GeoRef Citation

On two characteristic frequencies of acceleration spectra: Patch corner frequency and f_max

DEPARTMENT OF CIVIL ENGINEERING RENSSELAER POLYTECHNIC INSTITUTE, TROY, NEW YORK 12180

Abstract

We examine two issues related to the radiation of tectonic earthquake sources: (i) the complexity of the shape of observed source spectra, and (ii) the effect of recording site characteristics on the cut-off frequency f_max of acceleration spectra beyond which spectral amplitudes diminish sharply.

We compute the far-field spectra of the 1979 Imperial Valley and the 1984 Morgan Hill earthquakes from the slip functions that were inferred from detailed inversion studies of strong motion and teleseismic data of these two California strike-slip events. These spectra, along with data from the 1983 Central Japan Sea earthquake sequence (main shock and aftershocks), demonstrate the existence of the so-called patch corner frequency, which is related to the scale-length of heterogeneities of the fault plane. Such a frequency is a distinct feature of the source spectrum of the specific barrier model of Papageorgiou and Aki.

By analyzing accelerograms of the San Fernando earthquake of 1971, we found that f_max determined from records at soil stations is nearly the same as that determined from records at hard rock stations.

This article has been cited by other articles:

				M.-W. Huang, J.-H. Wang, K.-F. Ma, C.-Y. Wang, J.-H. Hung, and K.-L. Wen Frequency-Dependent Site Amplifications with f >= 0.01 Hz Evaluated from Velocity and Density Models in Central Taiwan Bulletin of the Seismological Society of America, April 1, 2007; 97(2): 624 - 637. [Abstract] [Full Text] [PDF]

				B. Halldorsson and A. S. Papageorgiou Calibration of the Specific Barrier Model to Earthquakes of Different Tectonic Regions Bulletin of the Seismological Society of America, August 1, 2005; 95(4): 1276 - 1300. [Abstract] [Full Text] [PDF]

				Stochastic Strong Ground-Motion Simulation of the 7 September 1999 Athens (Greece) Earthquake Bulletin of the Seismological Society of America, June 1, 2004; 94(3): 1036 - 1052.

				Seismicity in Deep Gold Mines of South Africa: Implications for Tectonic Earthquakes Bulletin of the Seismological Society of America, June 1, 2002; 92(5): 1766 - 1782.

				R. A. W. Haddon Modeling of source rupture characteristics for the Saguenay earthquake of November 1988 Bulletin of the Seismological Society of America, April 1, 1995; 85(2): 525 - 551. [Abstract] [PDF]

				H. FUJIWARA and K. IRIKURA High-frequency seismic wave radiation from antiplane cohesive zone model and fmax as source effect Bulletin of the Seismological Society of America, August 1, 1991; 81(4): 1115 - 1128. [Abstract] [PDF]