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Earthquakes. The epicenter ( / ˈɛpɪˌsɛntər / ), epicentre, or epicentrum [1] in seismology is the point on the Earth 's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates.
In seismology, an isoseismal map is used to show lines of equally felt seismic intensity, generally measured on the Modified Mercalli scale. Such maps help to identify earthquake epicenters, particularly where no instrumental records exist, such as for historical earthquakes. They also contain important information on ground conditions at ...
The epicenter of the moment magnitude 6.7 (M w) blind thrust earthquake was beneath the San Fernando Valley. [3] Lasting approximately 8 seconds and achieving the largest peak ground acceleration of over 1.7 g , it was the largest earthquake in the area since 1971.
e. Epicentral distance refers to the ground distance from the epicenter to a specified point. [1] Generally, the smaller the epicentral distance of an earthquake of the same scale, the heavier the damage caused by the earthquake. On the contrary, with the increase of epicentral distance, the damage caused by the earthquake is gradually reduced. [2]
Earlier forms, like the Neanderthals, were thought to be just steps along the path of evolution, who died out because we were better versions. Ancient DNA technology has revolutionized the way we ...
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]
Seismology ( / saɪzˈmɒlədʒi, saɪs -/; from Ancient Greek σεισμός ( seismós) meaning "earthquake" and -λογία ( -logía) meaning "study of") is the scientific study of earthquakes (or generally, quakes) and the generation and propagation of elastic waves through the Earth or other planetary bodies. It also includes studies of ...
The Academy of Motion Picture Arts and Sciences ( AMPAS ), often pronounced / ˈæmpæs / AM-pass; also known as simply the Academy or the Motion Picture Academy) is a professional honorary organization in Beverly Hills, California, U.S., with the stated goal of advancing the arts and sciences of motion pictures. The Academy's corporate ...