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Simulation-based site amplification model for shallow bedrock sites in Korea
Earthquake Spectra, 2021A new simulation‐based site amplification model for shallow sites with thickness less than 30 m in Korea is developed. The site amplification model consists of linear and nonlinear components that are developed from one‐dimensional linear and nonlinear site response analyses. A suite of measured shear wave velocity profiles is used
Duhee Park +2 more
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Interpretation of Seismic Vertical Amplification Observed at an Array Site
Bulletin of the Seismological Society of America, 2000 Strong ground motions were recorded at Port Island, Kobe, by a borehole array during the 1995 Hyogo-ken Nanbu (Kobe) earthquake. These records indicate that, while the horizontal peak accelerations were reduced as seismic waves traveling from the bottom to the surface, motions in the vertical direction were significantly amplified at the surface, with ...
Yang, J, Sato, Tadanobu
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Applicability of Site Amplification Models for Hard Rock Site Conditions
Site effects are typically modeled with a single parameter, the shear wave velocity at the uppermost 30 m (VS30), representing the soil profile's overall seismic response. VS30-based site amplification models may be used as standalone tools to determine the site amplification factors or implemented in ground motion models for various soil conditions ...
Onur Kanun, Zeynep Gülerce, Onur Pekcan
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Characterization of Site Amplification by a Parametric Study
Journal of Earthquake Engineering, 2023The reliability of Vs30 and the performance of alternative time averaged shear wave velocities (Vsz) and shear wave travel times (Ttz) at various depths, z, were investigated for the estimation of site amplification and fundamental frequency (f 0) characterization by considering the linear and nonlinear soil behavior.
N. Özge Fercan +2 more
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DNA fingerprinting by infrequent-restriction-site amplification
Journal of Clinical Microbiology, 1996Identification of bacterial strains by DNA fingerprinting facilitates epidemiologic studies and improves disease control. For some species of organisms, no typing method is available; for others, typing methods are tedious. We developed a method of amplifying DNA sequences flanking infrequent restriction sites by PCR and used the method to produce ...
G H, Mazurek +4 more
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Site Response Study and Amplification Factor for Shallow Bedrock Sites
Indian Geotechnical Journal, 2020Amplification is a key paramter considered to account modifcation of seimic wave in the soil for earthquake resistance design of structure placed on soil. Initially, earthquake wave amplifications are related with shear wave velocity (Vs) ratio of soil and foundation layer, and then it was related to average value of Vs up to 30 m (Vs30 ).
Aditya Parihar, P. Anbazhagan
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Earthquake SpectraThis article presents a suite of response spectrum (RS) and Fourier amplitude spectrum (FAS) site amplification models for Central and Eastern North America (CENA). The amplification database used in model development was produced through large-scale one-
Sissy Nikolaou +2 more
exaly +2 more sources
Gene Amplification Mechanisms: The Role of Fragile Sites
1998We studied the early stages of gene amplification in a Chinese hamster cell line and identified two distinct amplification mechanisms, both relying on an unequal segregation of gene copies at mitosis. In some cases, a sequence containing the selected gene is looped out, generating an acentric circular molecule, and amplification proceeds through ...
Debatisse, Michelle +3 more
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Geospatial Site Amplification Model for California
Bulletin of the Seismological Society of AmericaABSTRACT In ground-motion models (GMMs), site terms are typically derived from site-specific velocity profiles, such as VS30 (the time-averaged shear-wave velocity to a depth of 30 m) and Z1.0 (the depth to the 1.0 km/s shear-wave velocity horizon). However, these variables are not universally spatially available.
Maggie Roberts +4 more
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Site-specific recombination promotes plasmid amplification in yeast
Cell, 1986All stable, naturally occurring circular yeast DNA plasmids contain a pair of long, nontandem inverted repeats that undergo frequent reciprocal recombination. This yields two plasmid inversion isomers that exist in the cell in equal numbers. In the 2 mu circle plasmid of S.
F C, Volkert, J R, Broach
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