Point of origin of an earthquake or the point below a nuclear explosion or meteor air burst
"Ground zero" redirects here. For other uses, see Ground zero (disambiguation).
A hypocenter or hypocentre (from Ancient Greek ὑπόκεντρον (hupókentron) 'below the center'), also called ground zero or surface zero, is the point on the Earth's surface directly below a nuclear explosion, meteor air burst, or other mid-air explosion. In seismology, a hypocenter of an earthquake is its point of origin below ground; a synonym is the focus of an earthquake.[1]
Generally, the terms ground zero and surface zero are also used in relation to epidemics, and other disasters to mark the point of the most severe damage or destruction. The term is distinguished from the term zero point in that the latter can also be located in the air, underground, or underwater.[2]
^Cite error: The named reference USGS was invoked but never defined (see the help page).
^"U.S. DoD Terminology: zero point". Retrieved 28 November 2016.
A hypocenter or hypocentre (from Ancient Greek ὑπόκεντρον (hupókentron) 'below the center'), also called ground zero or surface zero, is the point on the...
observatory, their different travel times help scientists locate the quake's hypocenter. In geophysics; the refraction or reflection of seismic waves is used...
epicentrum 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...
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. Earthquakes...
Genbaku (A-bomb) dome, which was only 150 m (490 ft) from ground zero (the hypocenter). The ruin was named Hiroshima Peace Memorial and was made a UNESCO World...
digestive organs. Adjacent to the Shima Hospital is a monument marking the hypocenter of the atomic blast, which is located about a five-minute walk away from...
kilometres from the hypocenter was about 40 times greater than that from the Sun. The initial radiation level at the hypocenter was approximately 240...
the museum is a history of the city before the bomb was dropped. The hypocenter of the explosion was the Urakami district, which was a traditionally rustic...
and a willow at approximately 740 m from the hypocenter, and a holly approximately 935 m from the hypocenter. Both specimens are preserved just beyond the...
weapons. An army of 45,000 soldiers marched through the area around the hypocenter soon after the nuclear blast. The exercise was conducted on September...
following categories: within a few kilometers of the hypocenters of the bombs; within 2 km of the hypocenters within two weeks of the bombings; exposed to radiation...
Memorial Hall for the Atomic Bomb Victims Nagasaki Peace Park Atomic Bomb Hypocenter (located near the Peace Park) Nagasaki Peace Pagoda Nagasaki Penguin Aquarium...
Gorkha, roughly 85 km (53 mi) northwest of central Kathmandu, and its hypocenter was at a depth of approximately 8.2 km (5.1 mi). It was the worst natural...
record direct S waves, particularly ones that were 120° away from the hypocenter of the earthquake. In 1913, Beno Gutenberg noticed the abrupt change in...
conventional explosives. A cloud of nuclear radiation travels from the hypocenter of the explosion, causing an impact to life forms even after the heat...
Hiroshima were much higher, as Hiroshima was on flat terrain, while the hypocenter of Nagasaki lay in a small valley. According to figures published in 1945...
and near the Peace Memorial Hall. Established in 1955, and near to the hypocenter of the explosion, remnants of a concrete wall of Urakami Cathedral can...
Little Boy's hypocenter at Hiroshima, Japan, was found to have absorbed about 9.46 grays (Gy) of ionizing radiation. The doses at the hypocenters of the Hiroshima...
point in Wiktionary, the free dictionary. Zero point may refer to: The hypocenter of a nuclear explosion Origin (mathematics), a fixed point of reference...
at distance. It depends upon many factors, including the depth of the hypocenter, terrain, distance from the epicenter, whether the underlying strata there...
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