seismic focus
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seismic focus — /saɪzmɪk ˈfoʊkəs/ (say suyzmik fohkuhs) noun a point within the earth s crust at which an earthquake originates …
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 vertical — noun : the point on the surface of the earth vertically over the focus from which the impulse of an earthquake proceeds; also : the vertical line joining these two points … Useful english dictionary
Outline of geophysics — Seismic velocities and boundaries in the interior of the Earth sampled by seismic waves. The following outline is provided as an overview of and topical guide to geophysics: Geophysics – the physics of the Earth and its environment in space; also … Wikipedia
earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake … Universalium
Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 … Wikipedia
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Great Hanshin earthquake — Great Hanshin Earthquake … Wikipedia
Nuklearkatastrophe von Fukushima — Satellitenfoto der Reaktorblöcke 1 bis 4 (von rechts nach links) am 16. März 2011 nach mehreren Explosionen und Bränden. Als Nuklearkatastrophe von Fukushima werden eine Reihe von katastrophalen Unfällen und schweren Störfällen im… … Deutsch Wikipedia
Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… … Universalium
Near-surface geophysics — is the use of geophysical methods to investigate small scale features in the shallow (tens of meters) subsurface. It is closely related to applied geophysics or exploration geophysics. Methods used include seismic refraction and reflection,… … Wikipedia
