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 Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (19) Citing Articles via Google Scholar Google Scholar Articles by Malagnini, L. Articles by Koch, K. Search for Related Content GeoRef GeoRef Citation

Regional Ground-Motion Scaling in Central Europe

Istituto Nazionale di Geofisica
Rome, Italy
(L. M.)

Department of Earth and Atmospheric Sciences
Saint Louis University
St. Louis, Missouri
(L. M., R. B. H.)

Institute for Geosciences and Natural Resources
Hannover, Germany
(K. K.)

Regressions of 2700 horizontal-component broadband seismograms from 213 seismic events recorded by the German Regional Seismic Network (67 earthquakes and 146 large mining explosions and rockbursts) are carried out to study the scaling relationships of high-frequency S-wave motion for central Europe. At a set of sampling frequencies, regressions were performed on the logarithms of the peak amplitudes of narrow bandpass-filtered seismograms, as well as on the logarithms of the Fourier components of the velocity spectra. At a fixed frequency f, these values are written as

EXC(f, r_ref) is the excitation at an arbitrary reference hypocentral distance, r_ref, SITE(f) is a site term, and D(r, r_ref, f) describes the crustal attenuation in the region.

The crustal propagation term, empirically estimated in the (0.5–16.0 Hz) frequency band and (40–600 km) distance range, is modeled using a complex geometrical spreading function and a frequency-dependent crustal Q. We suggest

and a log-log quadrilinear geometrical spreading.

A factor exp(-₀f) is used to fit the high-frequency roll-off of the inverted excitation terms. Since we deal with two different kinds of sources (explosions-rockbursts and earthquakes), we use

The same Brune spectral model, characterized by a stress drop = 30 bars, is used to fit both earthquakes and explosive excitation terms.

A regression on the effective duration of the ground motion following the S-wave onset is also carried out. In central Europe, duration is observed to be almost frequency-independent. This property might be explained in terms of a self-similar distribution of crustal scatterers.

This article has been cited by other articles:

				B. Edwards, A. Rietbrock, J. J. Bommer, and B. Baptie The Acquisition of Source, Path, and Site Effects from Microearthquake Recordings Using Q Tomography: Application to the United Kingdom Bulletin of the Seismological Society of America, August 1, 2008; 98(4): 1915 - 1935. [Abstract] [Full Text] [PDF]

				L. Malagnini, K. Mayeda, R. Uhrhammer, A. Akinci, and R. B. Herrmann A Regional Ground-Motion Excitation/Attenuation Model for the San Francisco Region Bulletin of the Seismological Society of America, June 1, 2007; 97(3): 843 - 862. [Abstract] [Full Text] [PDF]

				F. Scherbaum, F. Cotton, and H. Staedtke The Estimation of Minimum-Misfit Stochastic Models from Empirical Ground-Motion Prediction Equations Bulletin of the Seismological Society of America, April 1, 2006; 96(2): 427 - 445. [Abstract] [Full Text] [PDF]

				S. Drouet, A. Souriau, and F. Cotton Attenuation, Seismic Moments, and Site Effects for Weak-Motion Events: Application to the Pyrenees Bulletin of the Seismological Society of America, October 1, 2005; 95(5): 1731 - 1748. [Abstract] [Full Text] [PDF]

				L. Scognamiglio, L. Malagnini, and A. Akinci Ground-Motion Scaling in Eastern Sicily, Italy Bulletin of the Seismological Society of America, April 1, 2005; 95(2): 568 - 578. [Abstract] [Full Text] [PDF]

				R. Ortega and L. Quintanar A Study of the Local Magnitude Scale in the Basin of Mexico: Mutually Consistent Estimates of log A0 and Ground-Motion Scaling Bulletin of the Seismological Society of America, April 1, 2005; 95(2): 605 - 613. [Abstract] [Full Text] [PDF]

				High-Frequency Earthquake Ground-Motion Scaling in Utah and Yellowstone Bulletin of the Seismological Society of America, October 1, 2004; 94(5): 1644 - 1657.

				Ground-Motion Scaling in the Kachchh Basin, India, Deduced from Aftershocks of the 2001 Mw 7.6 Bhuj Earthquake Bulletin of the Seismological Society of America, October 1, 2004; 94(5): 1658 - 1669.

				Earthquake Ground-Motion Scaling in Central Mexico between 0.7 and 7 Hz Bulletin of the Seismological Society of America, February 1, 2003; 93(1): 397 - 413.

				Spectral Shear-Wave Ground-Motion Scaling in Switzerland Bulletin of the Seismological Society of America, February 1, 2003; 93(1): 414 - 429.

				Characteristics of the Ground Motion in Northeastern Italy Bulletin of the Seismological Society of America, August 1, 2002; 92(6): 2186 - 2204.

				High-Frequency Ground Motion in the Erzincan Region, Turkey: Inferences from Small Earthquakes Bulletin of the Seismological Society of America, December 1, 2001; 91(6): 1446 - 1455.

				Ground-Motion Scaling in the Apennines (Italy) Bulletin of the Seismological Society of America, August 1, 2000; 90(4): 1062 - 1081.