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Applicability of Site Amplification Models for Hard Rock Site Conditions [PDF]

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
openaire   +3 more sources

Geospatial Site Amplification Model for California [PDF]

Bulletin of the Seismological Society of America
ABSTRACT 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, Laurie G. Baise, Shiying Nie, James Kaklamanos, Weiwei Zhan   +4 more
openaire   +2 more sources

Site amplification prediction model of shallow bedrock sites based on machine learning models [PDF]

Soil Dynamics and Earthquake Engineering, 2023
Prediction of the site amplification is of primary importance for a site-specific seismic hazard assessment. A large suite of both empirical and simulation-based site amplification models has been proposed.
Yong-Gook Lee, Sang-Jin Kim, Oh-Sung Kwon   +2 more
exaly   +3 more sources

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DNA fingerprinting by infrequent-restriction-site amplification

Journal of Clinical Microbiology, 1996
Identification 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, V, Reddy, B J, Marston, W H, Haas, J T, Crawford   +4 more
openaire   +2 more sources

Evaluation of site amplification and site period using different methods for an earthquake-prone settlement in Western Turkey [PDF]

Engineering Geology, 2006
Seismic micro hazard zonation for urban areas is the first step towards a seismic risk analysis and mitigation strategy. Essential here is to obtain a proper understanding of the local subsurface conditions and to evaluate ground shaking effects. In this
Reşat Ulusay
exaly   +2 more sources

Nationwide frequency-dependent seismic site amplification models for Iceland [PDF]

Soil Dynamics and Earthquake Engineering
Seismic wave amplification due to localized site conditions is an important aspect of regional seismic hazard assessment. Without systematic studies of frequency-dependent site-effects during strong Icelandic earthquakes, various local site proxies of ...
Atefe Darzi, Benedikt Halldórsson, Fabrice Cotton   +2 more
exaly   +3 more sources

Gene Amplification Mechanisms: The Role of Fragile Sites

1998
We 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, Coquelle, Arnaud, Toledo, Franck, Buttin, Gérard   +3 more
openaire   +2 more sources

Site-specific recombination promotes plasmid amplification in yeast

Cell, 1986
All 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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SEISMIC AMPLIFICATION AT A SOFT SOIL SITE WITH LIQUEFIABLE LAYER

Journal of Earthquake Engineering, 2000
It is well known that local soil conditions play a key role in the amplification of earthquake waves. In particular, a liquefiable shallow soil layer may produce a significant influence on ground motion during strong earthquakes. In this paper, the response of a liquefiable site during the 1995 Kobe earthquake is studied using vertical array records ...
Yang, J., Sato, T., Li, XS
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Site amplification characteristics of bedrock using three reference site methods

Exploration Geophysics, 2019
ABSTRACTWith the growing interest in seismic hazards following the Gyeongju earthquake (ML 5.8; 2016), information on site amplification characteristics is essential for the effective analysis of s...
Jun Kyoung Kim, Seong Hwa Yoo, Soung Hoon Wee   +2 more
openaire   +1 more source