Results 261 to 270 of about 14,383 (299)

Simulation of Rotational ground motion in the near field region

2020
<p><strong> </strong></p><p>In recent times, seismic rotational motions have received significant attention of seismologists as well earthquake engineers. The measurement of rotational motions is useful not only for the complete characterization of the ground ...
Raghukanth Stg, Varun K singla
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Stochastic geologic effects on near-field ground motions in alluvium

Bulletin of the Seismological Society of America, 1988
Abstract Analysis of accelerograms recorded at the 20 m range from a buried 5-lb detonation in alluvium revealed wide (as large as 20 dB in the amplitude modulus of the Fourier transform) variations in response for frequencies above 35 Hz. Additional experiments were performed which ruled out source asymmetry or instrumental irregularity
Robert E. Reinke, Brian W. Stump
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Simulation of Near-Field Pulse-Like Ground Motion

2012
The accurate prediction of ground motions from possible future earthquakes is the first step toward the robust assessment and mitigation of structural damage against earthquake hazards. The modeling of critical or resonant ground motions has been developed by the present authors in several studies.
Izuru Takewaki, Abbas Moustafa, Kohei Fujita   +2 more
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Calculations of Near Field, Earthquake Ground Motion

1973
Abstract : A stick-slip rupture model has been incorporated into a two- dimensional (plane strain) Lagrangian code with the added feature that rupture initiation is plastic work dependent. Realistic laboratory test data have been used as input to the model.
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Near-field ground motion from the Landers earthquake

1995
In order to investigate near-field ground motions, an important Lucerne Valley record from the Landers earthquake is studied. The Lucerne Valley record was recorded on the Kinemetrics SMA-2/EMA instrument located 2 km from the fault. Since the characteristics of the SMA-2/EMA instrument were not completely understood and the conventional data ...
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Seismic isolation of cable‐stayed bridges for near‐field ground motions

Earthquake Engineering & Structural Dynamics, 2003
AbstractThis study examines the efficacy of using seismic isolation to favorably influence the seismic response of cable‐stayed bridges subjected to near‐field earthquake ground motions. In near‐field earthquake ground motions, large amplitude spectral accelerations can occur at long periods where many cable‐stayed bridges have significant structural ...
Michael J. Wesolowsky, John C. Wilson
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Liquefaction Potential Assessment for Near Field and Far Field Ground Motion

2021
Out of the various seismic hazards, soil liquefaction is a major cause of both losses of life and damage to infrastructures and lifeline systems. For establishment of various important structures, suitable identification, evaluation and analysis of the liquefaction should be done in soil sites.
Nikhil Gupta, Ranjan Kumar, Kapilesh Bhargava   +2 more
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Predicted near-field ground motion for dynamic stress-drop models

pure and applied geophysics, 1985
We propose a finite difference method, using a hexagonal grid, to compute displacements (stresses, velocities, accelerations) in the near-field of a 2-D in-plane stress-drop crack, in both whole space (constant stress-drop) and half-space (depth-dependent stress-drop).
C -I. Trifu, M. Radulian
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Vertical ground motion in near field

2014
Two questions have puzzled seismologists in the past: if vertical peak accelerations could exceed the horizontal ones and if vertical peaks exceeding 1 g were feasible in the near field. Recordings of vertical accelerations larger than 1 g are very rare, only 7 so far (according to the Strong Motion Virtual Data Center, see Table 1). This is mainly due
M. Santulin, D. Sandron, TAMARO, Alberto, A. Rebez, M. Mucciarelli, D. Slejko   +5 more
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Deterministic and probabilistic representation of near-field pulse-like ground motion

Soil Dynamics and Earthquake Engineering, 2010
The response and damage assessment of engineering structures under near-field ground motions is currently of great interest. Near-field ground motion with directivity focusing or fling effects produces pulse-like ground motion that has characteristics different from those of ordinary records.
Moustafa, Abbas, Takewaki, Izuru
openaire   +1 more source