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Earthquakes In British Columbia
An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. 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 weapons testing. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the epicen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quake Epicenters 1963-98
Quake may refer to: Seismology * Earthquake, a shaking of the Earth's surface * Quake (natural phenomenon), surface shaking on any astronomical body Arts and entertainment * Quake (album), ''Quake'' (album), a 2003 album by Erik Friedlander * Quake (1992 film), ''Quake'' (1992 film), an American direct-to-video film * Quake (2021 film), an Icelandic drama film * The Quake (film), ''The Quake'' (film), a 2018 Norwegian film * Quake (series), ''Quake'' (series), a series of first-person shooter games ** Quake (video game), ''Quake'' (video game), the 1996 first game in the series *** Quake engine, ''Quake'' engine, a game engine by ID Software, first used in the 1996 game *** Quake (original soundtrack), ''Quake'' (original soundtrack), by Trent Reznor and Nine Inch Nails, 1996 ** Quake II engine, ''Quake II'' engine, the 1997 second iteration of the game engine, first used in ''Quake II'' * WQKE, The Quake, an FM radio station in Plattsburgh, New York, US * Quake, a List of Transfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsunami
A tsunami ( ; from , ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami. Unlike normal ocean waves, which are generated by wind, or tides, which are in turn generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water from a large event. Tsunami waves do not resemble normal undersea currents or sea waves because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide. For this reason, it is often referred to as a tidal wave, although this usage is not favoured by the scientific community because it might give the false impression of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaodong
A yaodong (窰 in native Jin Chinese, or 窰洞 ''yáodòng'' in Beijing Mandarin) is a particular form of Earth sheltering, earth shelter dwelling common in the Loess Plateau in China's north. They are generally carved out of a hillside or excavated horizontally from a central "sunken courtyard". The earth that surrounds the indoor space serves as an effective insulator, keeping the inside of the structure warm in cold seasons and cool in hot seasons. Consequently, very little heating is required in winter, and in summer, it is as cool as an air-conditioned room. The history of yaodongs goes back centuries, and they continue to be used. As of the early 2000s, between 30 and 40 million people in northern China still lived in yaodongs, a number rapidly decreasing as millions move to more modern dwellings nearby or move away as part of urbanization in China. Types The landscape of the Loess Plateau terrain is very complicated, with valleys, slopes, ridges, and hillocks. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shaanxi
Shaanxi is a Provinces of China, province in north Northwestern China. It borders the province-level divisions of Inner Mongolia to the north; Shanxi and Henan to the east; Hubei, Chongqing, and Sichuan to the south; and Gansu and Ningxia to the west. Shaanxi covers an area of over with about 37 million people, the 16th-largest in China. Xi'anwhich includes the sites of the former capitals Fenghao and Chang'anis the provincial capital and largest city in Northwest China and also one of the oldest cities in China and the oldest of the Historical capitals of China, Four Ancient Capitals, being the capital for the Western Zhou, Western Han, Sima Jin, Jin, Sui dynasty, Sui and Tang dynasty, Tang List of Chinese dynasties, dynasties. Xianyang, which served as the capital of the Qin dynasty (221–206 BC), is just north across the Wei River. The other Prefectures of China, prefecture-level prefecture-level city, cities into which the province is divided are Ankang, Baoji, Hanzho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS Magnitude 8 Earthquakes Since 1900
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on its hundredth anniversary, was "Earth Science in the Public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Map Of Earthquakes 1900-
A map is a symbolic depiction of interrelationships, commonly spatial, between things within a space. A map may be annotated with text and graphics. Like any graphic, a map may be fixed to paper or other durable media, or may be displayed on a transitory medium such as a computer screen. Some maps change interactively. Although maps are commonly used to depict geography, geographic elements, they may represent any space, real or fictional. The subject being mapped may be two-dimensional such as Earth's surface, three-dimensional such as Earth's interior, or from an abstract space of any dimension. Maps of geographic territory have a very long tradition and have existed from ancient times. The word "map" comes from the , wherein ''mappa'' meant 'napkin' or 'cloth' and ''mundi'' 'of the world'. Thus, "map" became a shortened term referring to a flat representation of Earth's surface. History Maps have been one of the most important human inventions for millennia, allowin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underground Nuclear Testing
Underground nuclear testing is the test detonation of nuclear weapons that is performed underground. When the device being tested is buried at sufficient depth, the nuclear explosion may be contained, with no release of radioactive materials to the atmosphere. The extreme heat and pressure of an underground nuclear explosion cause changes in the surrounding rock. The rock closest to the location of the test is vaporised, forming a cavity. Farther away, there are zones of crushed, cracked, and irreversibly strained rock. Following the explosion, the rock above the cavity may collapse, forming a rubble chimney. If this chimney reaches the surface, a bowl-shaped subsidence crater may form. The first underground test took place in 1951. Further tests soon led scientists to conclude that even notwithstanding environmental and diplomatic considerations, underground testing was of far greater scientific value than all other forms of testing. This understanding strongly influenced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Episodic Tremor And Slip
Episodic tremor and slip (ETS) is a seismological phenomenon observed in some subduction zones that is characterized by non-earthquake seismic rumbling, or tremor, and slow slip along the plate interface. Slow slip events are distinguished from earthquakes by their propagation speed and focus. In slow slip events, there is an apparent reversal of crustal motion, although the fault motion remains consistent with the direction of subduction. ETS events themselves are imperceptible to human beings and do not cause damage. Discovery Nonvolcanic, episodic tremor was first identified in southwest Japan in 2002. Shortly afterwards, the Geological Survey of Canada coined the term "episodic tremor and slip" to characterize observations of GPS measurements in the Vancouver Island area. Vancouver Island lies in the eastern, North American region of the Cascadia subduction zone. ETS events in Cascadia were observed to reoccur cyclically with a period of approximately 14 months. Analysi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moonquakes
A quake is the result when the surface of a planet, moon or star begins to shake, usually as the consequence of a sudden release of energy transmitted as seismic waves, and potentially with great violence. The types of quakes include earthquake, moonquake, marsquake, venusquake, sunquake, starquake, and mercuryquake. They can also all be referred to generically as earthquakes. Earthquake An earthquake is a phenomenon that results from the sudden release of stored energy in the Earth's crust that creates seismic waves. At the Earth's surface, earthquakes may manifest themselves by a shaking or displacement of the ground and sometimes cause tsunamis, which may lead to loss of life and destruction of property. An earthquake is caused by tectonic plates (sections of the Earth's crust) getting stuck and putting a strain on the ground. The strain becomes so great that rocks give way and fault lines occur. Moonquake A moonquake is the lunar equivalent of an earthquake (i.e., a quak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marsquake
A marsquake is a Quake (natural phenomenon), quake which, much like an earthquake, is a shaking of the surface or interior of the planet Mars. Such quakes may occur with a shift in the planet's interior, such as the result of plate tectonics, from which most quakes on Earth originate, or possibly from Hotspot (geology), hotspots such as Olympus Mons or the Tharsis Montes. The detection and analysis of marsquakes are informative to probing the Geology of Mars, interior structure of Mars, as well as potentially identifying whether any of Mars's Volcanism on Mars, many volcanoes continue to be volcanically active. Quakes have been observed and well-documented on the Lunar seismology, Moon, and there is evidence of past Geology of Venus#Tectonic activity, quakes on Venus. Marsquakes were first detected but not confirmed by the Viking mission in 1976. Marsquakes were detected and confirmed by the InSight mission in 2019. Using InSight data and analysis, the Viking marsquakes were confi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seismic Retrofit
Seismology (; 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 planetary bodies. It also includes studies of the environmental effects of earthquakes such as tsunamis; other seismic sources such as volcanoes, plate tectonics, glaciers, rivers, oceanic microseisms, and the atmosphere; and artificial processes such as explosions. Paleoseismology is a related field that uses geology to infer information regarding past earthquakes. A recording of Earth's motion as a function of time, created by a seismograph is called a seismogram. A seismologist is a scientist who works in basic or applied seismology. History Scholarly interest in earthquakes can be traced back to antiquity. Early speculations on the natural causes of earthquakes were included in the writings of Thales of Miletus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
