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Surface rupture caused by normal faulting along the Lost River Fault, during the 1983 Borah Peak earthquake. In seismology, surface rupture (or ground rupture, or ground displacement) is the visible offset of the ground surface when an earthquake rupture along a fault affects the Earth's surface. Surface rupture is opposed by buried rupture ...
A tectonic earthquake begins by an initial rupture at a point on the fault surface, a process known as nucleation. The scale of the nucleation zone is uncertain, with some evidence, such as the rupture dimensions of the smallest earthquakes, suggesting that it is smaller than 100 m while other evidence, such as a slow component revealed by low-frequency spectra of some earthquakes, suggest ...
Ground rupture is a visible breaking and displacement of the Earth's surface along the trace of the fault, which may be of the order of several meters in the case of major earthquakes. Ground rupture is a major risk for large engineering structures such as dams, bridges, and nuclear power stations and requires careful mapping of existing faults ...
Moderately damaging earthquakes strike between New York and Wilmington, Delaware, about twice a century, the USGS said, and smaller earthquakes are felt in the region roughly every two to three years.
The earthquake in Turkey that killed more than 3,100 people and set off a series of aftershocks ruptured just over 11 miles beneath the earth’s surface. The earthquake in Turkey that killed more ...
The Northridge earthquake was a buried rupture earthquake, [1] which caused massive surface damage. In seismology, a buried rupture earthquake, or blind earthquake, is an earthquake which does not produce a visible offset in the ground along the fault (as opposed to a surface rupture earthquake, which does).
A section between Monterey County and San Bernardino County ruptured 166 years ago, and another portion ruptured in the great San Francisco earthquake 117 years ago.
The point at which fault slipping begins is referred to as the focus of the earthquake. [8] The fault rupture begins at the focus and then expands along the fault surface. The rupture stops where the stresses become insufficient to continue breaking the fault (because the rocks are stronger) or where the rupture enters ductile material. [8]