secondary earthquake

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• secondary wave — secondary wave, an earthquake wave in which rock particles vibrate at right angles to the direction of travel …   Useful english dictionary

• 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

• Earthquake prediction — An earthquake prediction is a prediction that an earthquake in a specific magnitude range will occur in a specific region and time window. Predictions are considered as such to the extent that they are reliable for practical, as well as… …   Wikipedia

• Earthquake location — The primary purpose of a seismometer is to locate the initiating points of earthquake hypocenters. The secondary purpose, of determining the size or Moment magnitude scale must be calculated after the precise location is known.The earliest… …   Wikipedia

• earthquake — I (New American Roget s College Thesaurus) n. tremor, seism, quake, shock. See violence. II (Roget s IV) n. Syn. quake, tremor, temblor, tremblor, trembler, earthquake shock, shock, fault, slip, movement of the earth s surface, movement of the… …   English dictionary for students

• 2011 Christchurch earthquake — Christchurch earthquake redirects here. For other uses, see Christchurch earthquake (disambiguation). For the 13 June 2011 aftershock, see June 2011 Christchurch earthquake. February 2011 Christchurch earthquake ChristChurch Cathedral and the… …   Wikipedia

• Great Hanshin earthquake — Great Hanshin Earthquake …   Wikipedia

• 1985 Mexico City earthquake — Mexico city Collapsed General Hospital …   Wikipedia

• Damage to infrastructure in the 2010 Haiti earthquake — Main article: 2010 Haiti earthquake Collapsed buildings in Port au Prince Damage to infrastructure in the 2010 Haiti earthquake was extensive and affected areas included Port au Prince, Petit Goâve, Léogâne, Jacmel and other settlements in… …   Wikipedia

• 2011 Tōhoku earthquake and tsunami — 2011 Miyagi earthquake redirects here. For the aftershock that occurred on 7 April, see April 2011 Miyagi earthquake. 2011 Tōhoku earthquake and tsunami 東日本大震災 An aerial view of damage in the Tōhoku region with black smoke coming from the Nippon… …   Wikipedia