Seismic site effects are related to the amplification of seismic waves in superficial geological layers.[1] The surface ground motion may be strongly amplified if the geological conditions are unfavorable (e.g. sediments). Therefore, the study of local site effects is an important part of the assessment of strong ground motions, seismic hazard and engineering seismology in general. Damage due to an earthquake may thus be aggravated as in the case of the 1985 Mexico City earthquake. For alluvial basins, we may shake a bowl of jelly to model the phenomenon at a small scale.
This article defines site effects first, presents the 1985 Mexico City earthquake, describes the theoretical analysis of the phenomenon (through mechanical waves) and details several research results on seismic site effects in Caracas.
^Semblat J.F., Pecker A. (2009) Waves and vibrations in soils: earthquakes, traffic, shocks, construction works, IUSS Press, Pavia, Italy, 499p.
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Seismicsiteeffects are related to the amplification of seismic waves in superficial geological layers. The surface ground motion may be strongly amplified...
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Japan Meteorological Agency (JMA) Seismic Intensity Scale (known in Japan as the Shindo seismic scale) is a seismic intensity scale used in Japan to categorize...
strong or expensive. It has to be properly designed to withstand the seismiceffects while sustaining an acceptable level of damage. Earthquake engineering...
The New Madrid Seismic Zone (NMSZ) (/ˈmædrɪd/), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate...
scale (MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an...
and seismic reflection data". In Grady, M.M.; Hutchinson, R.; McCall, G.J.H.; Rothery, D.A. (eds.). Meteorites: Flux with Time and Impact Effects. Special...
reflected seismic waves. The method requires a controlled seismic source of energy, such as dynamite or Tovex blast, a specialized air gun or a seismic vibrator...
In geophysics, geology, civil engineering, and related disciplines, seismic noise is a generic name for a relatively persistent vibration of the ground...
focal depth. The focal depth can be calculated from measurements based on seismic wave phenomena. As with all wave phenomena in physics, there is uncertainty...
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museums throughout the United States come from the site. Las Vegas experienced noticeable seismiceffects. Westerly winds routinely carried the fallout from...
also includes studies of earthquake environmental effects such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, glacial, fluvial...
The effects of a nuclear explosion on its immediate vicinity are typically much more destructive and multifaceted than those caused by conventional explosives...
of the sites such as ground shaking, liquefaction susceptibility, landslide and rock fall hazard, earthquake-related flooding, so that seismic hazards...
detection. A seismic array differs from a local network of seismic stations mainly by the techniques used for data analysis. The data from a seismic array is...
information services, d) seismic hazard and risk related studies, e) field studies for aftershock/swarm monitoring and site response studies and f) earthquake...
Array allowed sites to be targeted in a more focused manner than the broad Transportable Array. Natural or artificially created seismic waves could be...
Vibrational communication Seismic or vibrational communication is a process of conveying information through mechanical (seismic) vibrations of the substrate...
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as compared to the widespread effects of an earthquake. Due to lower-frequency vibrations of cryoseisms, some seismic monitoring stations may not record...
on 2008-04-29. Retrieved 2007-05-24. Adams, R. D. (January 1968). "Seismiceffects at Mangla Dam: Pakistan" (PDF). UNESCO. p. 5. Archived (PDF) from the...
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