Effects of 3D Random Correlated Velocity Perturbations on Predicted Ground Motions

被引：52

作者：

Hartzell, Stephen ^{[1
]}

Harmsen, Stephen ^{[1
]}

Frankel, Arthur ^{[1
]}

机构：

[1] US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA

来源：

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA | 2010年 / 100卷 / 04期

关键词：

1994 NORTHRIDGE EARTHQUAKE; SAN-FRANCISCO EARTHQUAKE; SEISMIC-WAVE SIMULATIONS; BAND TIME HISTORIES; FAULT ZONE; GREENS-FUNCTIONS; ELEMENT-METHOD; CLARA VALLEY; PART II; CALIFORNIA;

D O I：

10.1785/0120090060

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Three-dimensional, finite-difference simulations of a realistic finite-fault rupture on the southern Hayward fault are used to evaluate the effects of random, correlated velocity perturbations on predicted ground motions. Velocity perturbations are added to a three-dimensional (3D) regional seismic velocity model of the San Francisco Bay Area using a 3D von Karman random medium. Velocity correlation lengths of 5 and 10 km and standard deviations in the velocity of 5% and 10% are considered. The results show that significant deviations in predicted ground velocities are seen in the calculated frequency range (<= 1 Hz) for standard deviations in velocity of 5% to 10%. These results have implications for the practical limits on the accuracy of scenario ground-motion calculations and on retrieval of source parameters using higher-frequency, strong-motion data.

引用

页码：1415 / 1426

页数：12

共 52 条

[1]

Aagaard B.T., 2001, EARTHQ SPECTRA, V17, P177, DOI [10.1193/1.1586171, DOI 10.1193/1.1586171]

[2] Ground-motion modeling of the 1906 San Francisco earthquake, part I: Validation using the 1989 Loma Prieta earthquake [J].

Aagaard, Brad T. ;

Brocher, Thomas M. ;

Dolenc, David ;

Dreger, Douglas ;

Graves, Robert W. ;

Harmsen, Stephen ;

Hartzell, Stephen ;

Larsen, Shawn ;

Zoback, Mary Lou .

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2008, 98 (02) :989-1011

[3] Ground-motion modeling of the 1906 San Francisco earthquake, part II:: Ground-motion estimates for the 1906 earthquake and scenario events [J].

Aagaard, Brad T. ;

Brocher, Thomas M. ;

Dolenc, David ;

Dreger, Douglas ;

Graves, Robert W. ;

Harmsen, Stephen ;

Hartzell, Stephen ;

Larsen, Shawn ;

McCandless, Kathleen ;

Nilsson, Stefan ;

Petersson, N. Anders ;

Rodgers, Arthur ;

Sjoegreen, Bjoern ;

Zoback, Mary Lou .

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2008, 98 (02) :1012-1046

[4] The basin-edge effect from weak ground motions across the fault-bounded edge of the Lower Hutt Valley, New Zealand [J].

Adams, BM ;

Osborne, NM ;

Taber, JJ .

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2003, 93 (06) :2703-2716

[5]

[Anonymous], 1960, WAVE PROPAGATION RAN

[6] Large-scale simulation of elastic wave propagation in heterogeneous media on parallel computers [J].

Bao, HS ;

Bielak, J ;

Ghattas, O ;

Kallivokas, LF ;

O'Hallaron, DR ;

Shewchuk, JR ;

Xu, JF .

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 1998, 152 (1-2) :85-102

[7]

Bielak J, 2005, CMES-COMP MODEL ENG, V10, P99

[8]

Brocher T., 2006, Seismol. Res. Lett, V77, P271

[9] Imaging of the near-surface shear-wave velocity structure of the Granada Basin (Southern Spain) [J].

Chourak, M ;

Corchete, V ;

Badal, J ;

Serón, F ;

Gómez, F .

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, 2003, 93 (01) :430-442

[10] The 2004 Mw6.0 Parkfield, California, earthquake:: Inversion of near-source ground motion using multiple data sets -: art. no. L23312 [J].

Custódio, S ;

Liu, PC ;

Archuleta, RJ .

GEOPHYSICAL RESEARCH LETTERS, 2005, 32 (23) :1-4

← 1 2 3 4 5 6 →