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The magnitude of an earthquake is related to the total area of its fault rupture. [8] Most earthquakes are small, with rupture dimensions less than the depth of the focus so the rupture doesn't break the surface, but in high magnitude, destructive earthquakes, surface breaks are common. [8]
Hypocenter (Focus) and epicenter of an earthquake. An earthquake's hypocenter or focus is the position where the strain energy stored in the rock is first released, marking the point where the fault begins to rupture. [3] This occurs directly beneath the epicenter, at a distance known as the hypocentral depth or focal depth. [3]
In seismology, the depth of focus or focal depth is the depth at which an earthquake occurs. Earthquakes occurring at a depth of less than 70 km (43 mi) are classified as shallow-focus earthquakes, while those with a focal depth between 70 km (43 mi) and 300 km (190 mi) are commonly termed mid-focus or intermediate-depth earthquakes. [ 1 ]
The data for an earthquake is plotted using a lower-hemisphere stereographic projection. The azimuth and take-off angle are used to plot the position of an individual seismic record. The take-off angle is the angle from the vertical of a seismic ray as it emerges from the earthquake focus.
In its most general sense, the word earthquake is used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally or be induced by human activities, such as mining, fracking, and nuclear tests. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the epicenter.
English: Diagram of the epicenter of an earthquake in relation to its hypocenter/focus point. Derived from original work by Sam Hocevar. Derived from original work by Sam Hocevar. Русский: Эпицентр и гипоцентр землетрясения
Speakers of Telugu refer to it as simply Telugu or Telugoo. [49] Older forms of the name include Teluṅgu and Tenuṅgu. [50] Tenugu is derived from the Proto-Dravidian word *ten ("south") [51] to mean "the people who lived in the south/southern direction" (relative to Sanskrit and Prakrit-speaking peoples).
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