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2010 Damghan Earthquake
The 2010 Damghan earthquake (also known as the Kuh-Zar earthquake) occurred in northern Iran at on August 27 with a moment magnitude of 5.8 and maximum Mercalli intensity of VII (''Very strong''). This strike-slip event damaged and destroyed a number of small villages in a sparsely populated region near the Alborz mountain range. It left four people dead, 40 injured, and about 800 without homes. The deaths and injuries in this moderate event were attributed to the low-quality construction styles that are typical of the area. The Iranian Strong Motion Network provided data by which seismologists determined the type and extent of the slip as well as the peak ground acceleration. Other large and destructive earthquakes have affected Semnan Province, including several events in 856 AD and 1953. Tectonic setting The tectonics of Iran are dominated by the continental collision of the Arabian and Eurasian Plates. The rate of convergence has been estimated at two centimeters per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault (geology)
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1953 Torud Earthquake
The 1953 Torud earthquake occurred at the northeastern border of the Great Salt Kavir in Torud, Semnan, Iran on 12 February. The shock had a moment magnitude of 6.6 and had a maximum Mercalli intensity of VIII (''Severe''). At least 800 people were killed. See also *List of earthquakes in 1953 This is a list of earthquakes in 1953. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the ... * List of earthquakes in Iran References Sources * External links * 1953 earthquakes 1953 in Iran Earthquakes in Iran History of Semnan Province 1953 disasters in Iran {{Iran-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Faulting
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, where there is no displacement at ground level. This is a major risk to any structure that is built across a fault zone that may be active, in addition to any risk from ground shaking. Surface rupture entails vertical or horizontal movement, on either side of a ruptured fault. Surface rupture can affect large areas of land. __TOC__ Lack of surface rupture Not every earthquake results in surface rupture, particularly for smaller and deeper earthquakes. In some cases, however, the lack of surface effects is because the fault that moved does not reach the surface. For example, the 1994 Northridge earthquake had a moment magnitude of 6.7, caused major damage in the Los Angeles area, occurred at below the Earth's surface, but did not cause surfa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissure
A fissure is a long, narrow crack opening along the surface of Earth. The term is derived from the Latin word , which means 'cleft' or 'crack'. Fissures emerge in Earth's crust, on ice sheets and glaciers, and on volcanoes. Ground fissure A , also called an , is a long, narrow crack or linear opening in the Earth's crust. Ground fissures can form naturally, such as from tectonic faulting and earthquakes, or as a consequence of human activity, such as oil mining and groundwater pumping. Once formed, ground fissures can be extended and eroded by torrential rain. They can be hazardous to people and livestock living on the affected surfaces and damaging to property and infrastructure, such as roads, underground pipes, canals, and dams. In circumstances where there is the extensive withdrawal of groundwater, the earth above the water table can subside causing fissures to form at the surface. This typically occurs at the floor of arid valleys having rock formations and compacte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torud, Semnan
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Satveh
Satveh ( fa, سطوه, also Romanized as Saţveh; also known as Sadfeh, Satfar, and Satva) is a village in Torud Rural District, in the Central District of Shahrud County, Semnan Province, Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... At the 2006 census, its population was 1,009, in 219 families. References Populated places in Shahrud County {{Shahrud-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moalleman
Moalleman ( fa, معلمان, also Romanized as Mo‘allemān, Maluman, and Mu‘allaman) is a village in Qohab-e Rastaq Rural District, Amirabad District, Damghan County, Semnan Province, Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... At the 2006 census, its population was 190, in 51 families. References Populated places in Damghan County {{Damghan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoseynan
Hoseynan ( fa, حسينان, also Romanized as Ḩoseynān and Ḩoseynān; also known as Ḩoseynīān, Hoseynīyān, Husain Nūd, Husain Nūn, and Husinan) is a village in Qohab-e Rastaq Rural District, Amirabad District, Damghan County, Semnan Province, Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... At the 2006 census, its population was 178, in 50 families. References Populated places in Damghan County {{Damghan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shimi, Iran
Shimi ( fa, شیمی, also Romanized as Shīmī; also known as Shemī) is a village in Qohab-e Rastaq Rural District, Amirabad District, Damghan County, Semnan Province, Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... At the 2006 census, its population was 156, in 38 families. References Populated places in Damghan County {{Damghan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelu, Semnan
Kelu ( fa, كلو, also Romanized as Kelū) is a village in Qohab-e Rastaq Rural District, Amirabad District, Damghan County, Semnan Province, Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... At the 2006 census, its population was 199, in 49 families. References Populated places in Damghan County {{Damghan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuh Zar, Semnan
Kuh Zar ( fa, كوه زر, also Romanized as Kūh Zar) is a village in Qohab-e Rastaq Rural District, Amirabad District, Damghan County, Semnan Province, Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... At the 2006 census, its population was 494, in 115 families. References Populated places in Damghan County {{Damghan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercalli Intensity
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the effects of an earthquake at a given location, distinguished from the earthquake's inherent force or strength as measured by seismic magnitude scales (such as the "" magnitude usually reported for an earthquake). While shaking is caused by the seismic energy released by an earthquake, earthquakes differ in how much of their energy is radiated as seismic waves. Deeper earthquakes also have less interaction with the surface, and their energy is spread out across a larger volume. Shaking intensity is localized, generally diminishing with distance from the earthquake's epicenter, but can be amplified in sedimentary basins and certain kinds of unconsolidated soils. Intensity scales empirically categorize the intensity of shaking based on the effects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
