Observations and estimation of long-period strong ground motion in the los angeles basin

1976 ◽  
Vol 4 (5) ◽  
pp. 473-488 ◽  
Author(s):  
Thomas C. Hanks
Keyword(s):  
Los Angeles ◽  
Ground Motion ◽  
Strong Ground Motion ◽  
Los Angeles Basin ◽  
Long Period ◽  
Strong Ground

The Whittier Narrows, California Earthquake of October 1, 1987—Note on Peak Accelerations during the 1 and 4 October Earthquakes

1988 ◽  
Vol 4 (1) ◽  
pp. 101-113 ◽  
Author(s):  
M. D. Trifunac
Keyword(s):  
Wave Propagation ◽  
Los Angeles ◽  
Ground Motion ◽  
Strong Ground Motion ◽  
Strong Dependence ◽  
Three Dimensional ◽  
Physical Processes ◽  
Los Angeles Basin ◽  
Dense Arrays ◽  
Strong Ground

Attenuation patterns of the recorded peak accelerations during two moderate earthquakes (ML = 5.9 and 5.3) in Los Angeles, California are described. It is shown that the recording of earthquake motions by dense arrays of accelerographs can yield a detailed and deterministic picture of the physical processes which are involved in shaping the observed variations of strong ground motion. For the two earthquakes the observed changes of peak amplitudes with respect to the azimuth and distance are slowly and continuously changing functions showing strong dependence of amplitudes on the radiation patterns of the two earthquakes and on the effects of wave propagation through irregular three-dimensional geology of the Los Angeles basin.

231 Long-Period Strong Ground Motion at the Oil Storage Tank Sites Damaged due to the 1999 Chi-Chi Earthquake in Taiwan

2001 ◽  
Vol 2001.14 (0) ◽  
pp. 185-186
Author(s):  
Shoichi YOSHIDA ◽  
Shinsaku ZAMA ◽  
Minoru YAMADA ◽  
Kazuo ISHIDA ◽  
Takayasu TAHARA
Keyword(s):  
Ground Motion ◽  
Storage Tank ◽  
Strong Ground Motion ◽  
Long Period ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Strong Ground

Long-period Strong Ground Motion and Damage to Oil Storage Tanks Due to the 2003 Tokachi-oki Earthquake

2004 ◽  
Vol 57 (2) ◽  
pp. 83-103 ◽  
Author(s):  
Ken HATAYAMA ◽  
Shinsaku ZAMA ◽  
Haruki NISHI ◽  
Minoru YAMADA ◽  
Yoshihiro HIROKAWA ◽  
...  
Keyword(s):  
Ground Motion ◽  
Strong Ground Motion ◽  
Storage Tanks ◽  
Long Period ◽  
Oil Storage ◽  
Strong Ground

scholarly journals A technique for simulating strong ground motion using hybrid Green's function

1998 ◽  
Vol 88 (2) ◽  
pp. 357-367 ◽  
Author(s):  
Katsuhiro Kamae ◽  
Kojiro Irikura ◽  
Arben Pitarka
Keyword(s):  
Green’S Function ◽  
Ground Motion ◽  
Green's Function ◽  
Green's Functions ◽  
Strong Ground Motion ◽  
Green’S Functions ◽  
Ground Motions ◽  
Large Earthquake ◽  
Long Period ◽  
Strong Ground

Abstract A method for simulating strong ground motion for a large earthquake based on synthetic Green's function is presented. We use the synthetic motions of a small event as Green's functions instead of observed records of small events. Ground motions from small events are calculated using a hybrid scheme combining deterministic and stochastic approaches. The long-period motions from the small events are deterministically calculated using the 3D finite-difference method, whereas the high-frequency motions from them are stochastically simulated using Boore's method. The small-event motions are synthesized summing the long-period and short-period motions after passing them through a pair of matched filters to follow the omega-squared source model. We call the resultant time series “hybrid Green's functions” (HGF). Ground motions from a large earthquake are simulated by following the empirical Green's function (EGF) method. We demonstrate the effectiveness of the method at simulating ground motion from the 1995 Hyogo-ken Nanbu earthquake (Mw 6.9).

Study on Long-Period Inelastic Spectra of Strong Ground Motion Containing Velocity Pulse

2011 ◽  
Vol 243-249 ◽  
pp. 3919-3926 ◽  
Author(s):  
Chun Feng Li ◽  
Xiao Jun Li ◽  
Yian Xiang Yu ◽  
Yong Bo Li
Keyword(s):  
Ground Motion ◽  
Strong Ground Motion ◽  
Time History ◽  
Elastic Response ◽  
Velocity Pulse ◽  
Long Period ◽  
Elastic Response Spectra ◽  
Time Histories ◽  
Original Time ◽  
Strong Ground

In order to understand fully the effect of strong ground motion containing velocity pulse on constant-ductility long-period inelastic spectra, we synthesize two time histories, not containing velocity pulse, whose elastic spectra are identical to that of original time history containing velocity pulse, and whose peak accelerations are as big as that of the original time history. The reason why we synthesize two time histories for one original time history is to avoid the effect of randomicity in selecting sample. We select two time histories of 1999 CHi-CHi earthquake as original time histories, one of which has two synthesized counterparts. It is found that although the elastic response spectra of original time histories are identical with those of their synthesized counterparts, their constant-ductility long-period inelastic spectra are different. We consider that the difference results from the velocity pulses which exist in the original time histories.

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