Results 11 to 20 of about 108,930 (302)

Effects of the 6th September 2002 earthquake: damage amplification in the south-eastern sector of Palermo explained by GIS technology

open access: yesAnnals of Geophysics, 2003
During the 6th September 2002 earthquake the highest damage level in Palermo was observed in the SE sector. This is a recent urbanization area where reinforced concrete structures predominate.
A. Zuccarello   +3 more
doaj   +1 more source

Site effect determination using seismic noise from Tungurahua volcano (Ecuador):implications for seismo-acoustic analysis [PDF]

open access: yes, 2015
Scattering and refractions that occur in the heterogenous near-surface beneath seismic stations can strongly affect the relative amplitudes recorded by three-component seismometers.
Kendall, J M   +2 more
core   +2 more sources

Diffuse seismic waves and site effects

open access: yesJournal of Geophysics and Engineering, 2011
The Green's function can be retrieved from averaging cross correlations of recorded motions within a diffuse field. When autocorrelation is performed the energy density at a point is proportional to the trace of the imaginary part of the Green's function tensor at the source itself.
F J Sánchez-Sesma   +4 more
openaire   +1 more source

Geo-Proxy-Based Site Classification for Regional Zonation of Seismic Site Effects in South Korea

open access: yesApplied Sciences, 2018
Seismic site effects and topographic effects related to ground motion occur during an earthquake due to site-specific geotechnical or geological characteristics, including the geological or geographical structure and the characteristics of near-surface ...
Chang-Guk Sun   +2 more
doaj   +1 more source

Evaluating the Minimum Number of Earthquakes in Empirical Site Response Assessment: Input for New Requirements for Microzonation in the Swiss Building Codes

open access: yesFrontiers in Earth Science, 2022
Site-specific hazard analyses and microzonation are important products for densely populated areas and facilities of special risk. The empirical amplification function is classically estimated using the standard spectral ratio (SSR) approach.
Vincent Perron   +2 more
doaj   +1 more source

The direct boundary element method: 2D site effects assessment on laterally varying layered media (methodology) [PDF]

open access: yes, 2004
The Direct Boundary Element Method (DBEM) is presented to solve the elastodynamic field equations in 2D, and a complete comprehensive implementation is given. The DBEM is a useful approach to obtain reliable numerical estimates of site effects on seismic
Aki   +28 more
core   +2 more sources

Numerical Analysis of Seismic Site Effects in Loess Region of Western China under Strong Earthquake Excitations

open access: yesShock and Vibration, 2020
The Loess Plateau is one of the most tectonically and seismically active areas in the world. Observations from past strong earthquakes, particularly the Minxian–Zhangxian and Wenchuan earthquakes, have shown distinctive evidence of seismic site effects ...
Tuo Chen   +4 more
doaj   +1 more source

Modelling strong seismic ground motion: three-dimensional loading path versus wavefield polarization [PDF]

open access: yes, 2012
Seismic waves due to strong earthquakes propagating in surficial soil layers may both reduce soil stiffness and increase the energy dissipation into the soil.
D'Avila, Maria Paola Santisi   +2 more
core   +6 more sources

GIS-Based Optimum Geospatial Characterization for Seismic Site Effect Assessment in an Inland Urban Area, South Korea

open access: yesApplied Sciences, 2020
Soil and rock characteristics are primarily affected by geological, geotechnical, and terrain variation with spatial uncertainty. Earthquake-induced hazards are also strongly influenced by site-specific seismic site effects associated with subsurface ...
Han-Saem Kim   +4 more
doaj   +1 more source

Seismic response analysis for Romanian extra-carpathian sedimentary areas

open access: yesTerritorium: Revista Portuguesa de riscos, prevenção e segurança, 2021
The seismic response of the ground motion is analysed using processed recordings and related spectral characteristics. The analysis is carried out for few representative different sites, with different geological local conditions.
Gheorghe Marmureanu   +2 more
doaj   +1 more source

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