seismic waves
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Seismic wave — Seismic waves are waves that travel through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion. Seismic waves are also continually excited by the pounding of ocean waves and the wind. Seismic waves are… … Wikipedia
Seismic refraction — is a geophysical principle (see refraction) governed by Snell s Law. Used in the fields of engineering geology, geotechnical engineering and exploration geophysics, seismic refraction traverses (seismic lines) are performed using a seismograph(s) … Wikipedia
Seismic shadowing — is a global effect of an earthquake. The seismic waves generated by an earthquake pass through the body of the Earth, but between 104° and 140° from the focus of an earthquake, little or no seismic waves can be detected. This is because primary… … Wikipedia
Seismic microzonation — map of Greater Bangkok prepared based on predominant period of site obtained from microtremor observations [1] Main article: Earthquake engineering Seismic microzonation is defined as the process … Wikipedia
Seismic retrofit — Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes. Other retrofit techniques are applicable to areas subject to tropical cyclones,… … Wikipedia
seismic tomography — seismic tomography, the use of seismic waves to form images of the earth s interior which are then synthesized into a single cross sectional view: »the three dimensional maps produced by seismic tomography … Useful english dictionary
seismic wave — Vibration generated by an earthquake, explosion, or similar phenomenon and propagated within the Earth or along its surface. Earthquakes generate two principal types of waves: body waves, which travel within the Earth, and surface waves, which… … Universalium
seismic survey — method of investigating subterranean structure, particularly as related to exploration for petroleum, natural gas, and mineral deposits (mineral deposit). The technique is based on determinations of the time interval that elapses between… … Universalium
seismic wave — GLOSSARY OF VOLCANIC TERMS A term for elastic earth waves formed by either earthquakes or explosions. Seismic waves include both surface waves as well as body waves … Glossary of volcanic terms
seismic — [[t]sa͟ɪzmɪk[/t]] ADJ: ADJ n Seismic means caused by or relating to an earthquake. Earthquakes produce two types of seismic waves... The latest seismic activity was also felt in northern Kenya … English dictionary
seismic lithosphere — noun the region between the surface of the Earth and the asthenosphere characterized by the efficient propagation of seismic waves … Wiktionary
