Bulletin of the seismological society of America, Vol. 96 N°6. Bulletin Seismological Society of America - Decembre 2006
| Titre : | Bulletin of the seismological society of America, Vol. 96 N°6. Bulletin Seismological Society of America - Decembre 2006 |
| Type de document : | Bulletin |
| Paru le : | 16/01/2007 |
Dépouillements
Article : texte imprimé
Bommer, Julian J., Auteur ;
Abrahamson, Norman A., Auteur
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The basic elements of probabilistic seismic-hazard analysis (PSHA) were established almost four decades ago and PSHA has now become the most widely used approach for estimating seismic-design loads. Although the use of PSHA is widespread, consid[...]
Article : texte imprimé
Stirling, Mark, Auteur ;
Petersen, Mark, Auteur
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We compare the historical record of earthquake hazard experienced at 78 towns and cities (sites) distributed across New Zealand and the continental United States with the hazard estimated from the national probabilistic seismic-hazard (PSH) mode[...]
Article : texte imprimé
Yakovlev, Gleb, Auteur ;
Turcotte, Donald L., Auteur ;
Rundle, John B., Auteur
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Earthquakes on a specified fault (or fault segment) with magnitudes greater than a specified value have a statistical distribution of recurrence times. The mean recurrence time can be related to the rate of strain accumulation and the strength o[...]
Article : texte imprimé
Cramer, Chris H., Auteur
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The Mississippi embayment, located in the central United States, and its thick deposits of sediments (over 1 km in places) have a large effect on earthquake ground motions. Several previous studies have addressed how these thick sediments might [...]
Article : texte imprimé
Hong, H. P., Auteur ;
Goda, K., Auteur
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The deaggregation of seismic hazard is an effective way to identify scenario events that contribute to a selected seismic-hazard level. Depending on the use of the deaggregation results, the contribution may be defined as equal to or exceeding t[...]
Article : texte imprimé
González de Vallejo, Luis I., Auteur ;
García-Mayordomo, Julián, Auteur ;
Insua, Juan M., Auteur
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This article presents the first probabilistic seismic hazard assessment of the Canary Islands. The Canary Islands form a volcanic archipelago located on the passive margin of the African plate, 100 km off West Africa. Active volcanism has taken [...]
Article : texte imprimé
Bragato, P. L., Auteur ;
Bressan, G., Auteur
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In this article we propose a new method for automatic seismic zonation based on focal mechanisms. The technique searches for the areas where the homogeneity of the stress field is maximized. The problem is posed as one of optimal partitioning of[...]
Article : texte imprimé
Suryanto, W., Auteur ;
Igel, H., Auteur ;
Wassermann, J., Auteur
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Recently, ring laser technology has provided the first consistent observations of rotational ground motions around a vertical axis induced by earthquakes. "Consistent," in this context, implies that the observed waveforms and amplitudes are comp[...]
Article : texte imprimé
Boroschek, Rubén L., Auteur ;
Legrand, Denis, Auteur
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There is an important need for seismologists and engineers to determine seismic displacement including its quasi-static components. The existence of commercial low-cost and low-noise instruments has prompted researchers to try to derive displace[...]
Article : texte imprimé
Graizer, Vladimir, Auteur
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Most instruments used in seismological practice to record ground motion are pendulum seismographs, velocigraphs, or accelerographs. In most cases it is assumed that seismic instruments are only sensitive to the translational motion of the instru[...]
Article : texte imprimé
Guillaume Pousse, Auteur ;
Bonilla, Luis Fabián, Auteur ;
Cotton, Fabrice, Auteur
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Physical models that can be used to obtain realistic accelerograms usually require a thorough knowledge of the source, path, and site effects. In addition, the computational resources needed might be expensive. Thus, empirical models still repre[...]
Article : texte imprimé
Liu, Pengcheng, Auteur ;
Archuleta, Ralph J., Auteur ;
Hartzell, Stephen, Auteur
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We present a new method for calculating broadband time histories of ground motion based on a hybrid low-frequency/high-frequency approach with correlated source parameters. Using a finite-difference method we calculate low- frequency synthetics [...]
Article : texte imprimé
Pavlenko, Olga, Auteur ;
Irikura, Kojiro, Auteur
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Acceleration records of the Tottori earthquake (6 October 2000), provided by stations of the Digital Strong-Motion Network Kik-Net, show clear evidence of the nonlinearity of soil response at sites located in near-fault zones. In this study, rec[...]
Article : texte imprimé
Tothong, Polsak, Auteur ;
Allin Cornell, C., Auteur
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This article presents an empirical ground-motion prediction model (attenuation relation) for inelastic (as opposed to elastic) spectral displacement (Sdi) for ground motions without forward directivity effects. It is a function of two earthquake[...]
Article : texte imprimé
Joshi, A., Auteur
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High-frequency strong-motion data of two recent major earthquakes of the Garhwal Himalayan region of India have been analyzed to determine the Qß(f) for this region. Data from a local array of 24 stations, two main shocks, and several aftershock[...]
Article : texte imprimé
Atkinson, Gail M., Auteur ;
Boore, David M., Auteur
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New earthquake ground-motion relations for hard-rock and soil sites in eastern North America (ENA), including estimates of their aleatory uncertainty (variability) have been developed based on a stochastic finite-fault model. The model incorpora[...]
Article : texte imprimé
Bakun, W. H., Auteur
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Earthquakes in central Nevada (1932–1959) were used to develop a modified Mercalli intensity (MMI) attenuation model for estimating moment magnitude M for earthquakes in the Basin and Range province of interior western North America. M is 7.4–7.[...]
Article : texte imprimé
Keir,Derek, Auteur ;
Stuart, G. W., Auteur ;
Jackson, A., Auteur
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A calibrated local earthquake magnitude scale is essential for quantitative analyses of seismicity. In Ethiopia, effective monitoring of earthquakes and resulting assessment of seismic hazard are especially important as regions with seismic and [...]
Article : texte imprimé
Ziv, A., Auteur
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Motivated by recent studies showing that stress modifications due to small quakes are important in earthquake triggering, we use a quasi-dynamic spatially discrete model of a rate- and state-dependent fault to examine the effect of multiple elas[...]
Article : texte imprimé
Stefan Baisch, Auteur ;
Weidler, Ralph, Auteur ;
Vörös, Robert, Auteur
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A long-term fluid-injection experiment was performed in the Cooper Basin (Australia) in 2003 to stimulate a geothermal reservoir. More than 20,000 m3 of water were injected into the granitic crust at 4250 m depth. During reservoir stimulation ab[...]
Article : texte imprimé
Chao-ying Bai, Auteur ;
Stewart, Greenhalgh, Auteur
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A simple but robust method for joint (multiple) earthquake location in arbitrary 3D velocity media is presented in this article. It exploits the advantages of the irregular shortest-path method (irregular SPM) for the raytracing, and uses a damp[...]
Article : texte imprimé
Pujol, Jose, Auteur ;
Mueller, Karl, Auteur ;
Peng Shen, Auteur
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We determined a high-resolution 3D P-wave velocity model for an 80 km x 80 km area around the San Fernando Valley extending 22 km below sea level. We used events recorded from 1981 to 2000 as well as 799 aftershocks of the 1971 San Fernando eart[...]
Article : texte imprimé
Baldwin, John N., Auteur ;
Witter, Robert C., Auteur ;
Vaughn, James D., Auteur
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The Commerce geophysical lineament (CGL) is a 600-km-long, 5- to 10-km-wide, northeast-trending magnetic and gravity anomaly that extends from northeastern Arkansas to central Indiana. The seismogenic potential of the CGL is poorly known. Howeve[...]
Article : texte imprimé
Meltzner, Aron J., Auteur ;
Rockwell, Thomas K., Auteur ;
Owen, Lewis A., Auteur
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The Brawley fault zone (BFZ) and the Brawley Seismic Zone constitute the principal transfer zone accommodating strain between the San Andreas and Imperial faults in southernmost California. The BFZ ruptured along with the Imperial fault in the 1[...]
Article : texte imprimé
Zhizhin, M. N., Auteur ;
Rouland, D., Auteur ;
Bonnin, J., Auteur
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The present study deals with rapid, automatic, estimation of some earthquake parameters (location, focal depth, and magnitude) in a region of rather high seismic activity, in quasi-real time, through the analysis of incoming broadband records. T[...]
Article : texte imprimé
Fisk, Mark D., Auteur
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Theoretical understanding of regional P/S discriminants has been a long- standing research topic with important implications for nuclear explosion monitoring. The observation that discrimination is poor at low frequencies, but becomes significan[...]
Article : texte imprimé
Arrowsmith, Stephen J., Auteur ;
Arrowsmith, Marie D., Auteur ;
Hedlin, Michael A. H., Auteur
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Delay-fired mine blasts, which consist of a series of individual shots arranged in a grid pattern and detonated in sequence, can introduce spectral modulations into recorded seismograms. We can exploit spectral modulations to separate delay-fire[...]
Article : texte imprimé
Liu, Qinya, Auteur ;
Tromp, Jeroen, Auteur
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We derive the adjoint equations associated with the calculation of Fréchet derivatives for tomographic inversions based upon a Lagrange multiplier method. The Fréchet derivative of an objective function {chi}(m), where m denotes the Earth model,[...]
Article : texte imprimé
Kristek, Jozef, Auteur ;
Moczo, Peter, Auteur
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We present a 1D finite-difference (FD) scheme that is based on the application of Geller and Takeuchi’s (1998) optimally accurate FD operators to the heterogeneous strong-form equation of motion developed by Moczo et al. (2002). We numerically c[...]
Article : texte imprimé
De Meersman, K., Auteur ;
van der Baan, M., Auteur ;
Kendall, J.-M., Auteur
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We present a method to extract seismic signals from three-component array data and estimate their polarization properties at each station. The technique is based on a singular value decomposition (SVD) of the complex three-component analytic sig[...]
Article : texte imprimé
Yuan-Hsi Lee, Auteur ;
Chen, He-Shin, Auteur ;
Ruey-Juin Rau, Auteur
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The 1999 Chi-Chi earthquake, Mw 7.6, ruptured a major thrust fault along the western foothills of the Central Mountain Range of Taiwan. Here, we use cadastral control points to detect horizontal displacement in Taichung, central Taiwan. The cada[...]
Article : texte imprimé
Yang, Ting, Auteur ;
Shen, Yang, Auteur
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Removing the crustal signature from teleseismic travel times is an important procedure to reduce the trade-off between crustal and mantle velocity heterogeneities in seismic tomography. Because reverberations of long- and short-period body-wave [...]
Article : texte imprimé
Mitra, S., Auteur ;
Priestley, K., Auteur ;
Gaur, V. K., Auteur
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We use seismograms from regional earthquakes recorded on digital seismographs in peninsular India to determine the frequency-dependent Q of Lg for the Indian platform. We measure Lg attenuation by determining the decay of spectral amplitudes wit[...]
Article : texte imprimé
Gallipoli, Maria Rosaria, Auteur ;
Mucciarelli, Marco, Auteur ;
Ponzo, Felice, Auteur
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Taking advantage of a large displacement-release experiment on a two- story reinforced concrete building located in Bagnoli (Naples, Italy), we performed free-field measurements using 3D seismometers, accelerometers, and a 100-m-long vertical ar[...]
Article : texte imprimé
Beauval, Céline, Auteur ;
Hainzl, Sebastian, Auteur ;
Scherbaum, Frank, Auteur
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The first step in the estimation of probabilistic seismic hazard in a region commonly consists of the definition and characterization of the relevant seismic sources. Because in low-seismicity regions seismicity is often rather diffuse and fault[...]
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