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An earthquake is the shaking of the surface of Earth resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes may also be referred to as quakes, tremors, or temblors. The word tremor is also used for non-earthquake seismic rumbling . In its most general sense, an earthquake is any seismic event ...
Submarine earthquake, an earthquake that occurs underwater at the bottom of a body of water, especially an ocean. [ 17] Supershear earthquake, an earthquake in which the propagation of the rupture along the fault surface occurs at speeds in excess of the seismic shear wave (S-wave) velocity, causing an effect analogous to a sonic boom. [ 18]
Although the effects of soil liquefaction have been long understood, engineers took more notice after the 1964 Alaska earthquake and 1964 Niigata earthquake. It was a major cause of the destruction produced in San Francisco's Marina District during the 1989 Loma Prieta earthquake, and in the Port of Kobe during the 1995 Great Hanshin earthquake.
Tsunami. Major. Run-up of 67 m (220 ft) at Shoup Bay, Alaska. Casualties. 131 killed. The 1964 Alaskan earthquake, also known as the Great Alaskan earthquake and Good Friday earthquake, occurred at 5:36 PM AKST on Good Friday, March 27, 1964. [ 2] Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from ...
Earthquake environmental effects are the effects caused by an earthquake, including surface faulting, tsunamis, soil liquefactions, ground resonance, landslides and ground failure, either directly linked to the earthquake source or provoked by the ground shaking. [ 1] These are common features produced both in the near and far fields, routinely ...
The 1959 Hebgen Lake earthquake (also known as the 1959 Yellowstone earthquake) [ 4] occurred in the western United States on August 17 at 11:37 pm ( MST) in southwestern Montana. [ 4][ 5] The earthquake measured 7.2 on the moment magnitude scale, [ 1] caused a huge landslide, resulted in over 28 fatalities and left $ 11 million (equivalent to ...
A seismic wave is a mechanical wave of acoustic energy that travels through the Earth or another planetary body. It can result from an earthquake (or generally, a quake ), volcanic eruption, magma movement, a large landslide and a large man-made explosion that produces low-frequency acoustic energy.
The island of Hawaii is affected by earthquakes related to three main causes. Some are associated with the movement of magma and tend to be shallow focus (less than 5 km (3.1 mi) depth). The largest earthquakes are those caused by overall gravitational spreading of the volcano, whether within the volcano's flanks or at the base of the volcanic ...