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1903 Manzikert Earthquake
The 1903 Manzikert earthquake struck Manzikert of nowadays Muş Province in eastern Turkey on 28 April. Registering a surface wave magnitude of 7.0, the earthquake originated from a highly active seismic zone. It killed 3,500 people and 20,000 animals, destroyed 12,000 homes, and is now listed among Turkey's deadliest earthquakes in recorded history. To this day, Turkey is threatened by major earthquakes – more than 100 earthquakes over 7.0 have taken place in the country's known history. Geology The country of Turkey is situated on a highly active section of the Eurasian Plate boundary. The country is mainly mountainous, approximately 85 percent of the country is at an elevation of or more. The entire country lies within a zone of active deformation known as the Alpide belt. This zone of continental collision reaches from the Atlantic Ocean to the Himalaya Mountains and beyond; dating back to the Paleogene period. It has formed due to convergent movement between the Arabian, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Wave Magnitude
The surface wave magnitude (M_s) scale is one of the magnitude scales used in seismology to describe the size of an earthquake. It is based on measurements of Rayleigh surface waves that travel along the uppermost layers of the Earth. This magnitude scale is related to the local magnitude scale proposed by Charles Francis Richter in 1935, with modifications from both Richter and Beno Gutenberg throughout the 1940s and 1950s. It is currently used in People's Republic of China as a national standard (GB 17740-1999) for categorising earthquakes. Recorded magnitudes of earthquakes through the mid 20th century, commonly attributed to Richter, could be either M_s or M_L. Definition The formula to calculate surface wave magnitude is: :M_s = \log_\left(\frac\right)_ + \sigma(\Delta)\,, where A is the maximum particle displacement in surface waves ( vector sum of the two horizontal displacements) in μm The micrometre ( international spelling as used by the Internati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Plate
The African Plate is a major tectonic plate that includes much of the continent of Africa (except for its easternmost part) and the adjacent oceanic crust to the west and south. It is bounded by the North American Plate and South American Plate to the west (separated by the Mid-Atlantic Ridge); the Arabian Plate and Somali Plate to the east; the Eurasian Plate, Aegean Sea Plate and Anatolian Plate to the north; and the Antarctic Plate to the south. Between and , the Somali Plate began rifting from the African Plate along the East African Rift. Since the continent of Africa consists of crust from both the African and the Somali plates, some literature refers to the African Plate as the Nubian Plate to distinguish it from the continent as a whole. Boundaries The western edge of the African Plate is a divergent boundary with the North American Plate to the north and the South American Plate to the south which forms the central and southern part of the Mid-Atlantic Ridge. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In Turkey
This is a list of earthquakes in Turkey, including any notable historical earthquakes that have epicenters within the current boundaries of Turkey, or which caused significant effects in this area. Overall, the population in major cities like Istanbul resides in structures that are a mix of vulnerable and earthquake resistant construction. The predominant vulnerable building types are adobe block and stone block masonry construction. This list is incomplete. Tectonic setting Turkey is a seismically active area within the complex zone of collision between the Eurasian Plate and both the African and Arabian Plates. Much of the country lies on the Anatolian Plate, a small plate bounded by two major strike-slip fault zones, the North Anatolian Fault and East Anatolian Fault. The western part of the country is also affected by the zone of extensional tectonics in the Aegean Sea caused by the southward migration of the Hellenic arc. The easternmost part of Turkey lies on the wester ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In 1903
This is a list of earthquakes in 1903. Only magnitude 6.0 or greater earthquakes appear on the list. Exceptions to this are earthquakes which have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. All dates are listed according to UTC time. The countries and their flags are noted as they would have appeared in this year for example the Dutch East Indies being present-day Indonesia. A quieter year than normal but one with many deaths. The bulk of the deaths in this year came from a quake which struck Turkey in April. The largest event of the year was a magnitude 8.1 earthquake in Greece but this only caused two deaths. Overall By death toll * Note: At least 10 casualties By magnitude * Note: At least 7.0 magnitude Notable events January February March April May June August September October November Decem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aftershock
In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock. Large earthquakes can have hundreds to thousands of instrumentally detectable aftershocks, which steadily decrease in magnitude and frequency according to a consistent pattern. In some earthquakes the main rupture happens in two or more steps, resulting in multiple main shocks. These are known as doublet earthquakes, and in general can be distinguished from aftershocks in having similar magnitudes and nearly identical seismic waveforms. Distribution of aftershocks Most aftershocks are located over the full area of fault rupture and either occur along the fault plane itself or along other faults within the volume affected by the strain associated with the main shock. Typically, aftershocks are found up to a distance equal to the rupture length away from the fault plane. The pattern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitlis
Bitlis ( hy, Բաղեշ '; ku, Bidlîs; ota, بتليس) is a city in southeastern Turkey and the capital of Bitlis Province. The city is located at an elevation of 1,545 metres, 15 km from Lake Van, in the steep-sided valley of the Bitlis River, a tributary of the Tigris. The local economy is mainly based on agricultural products which include fruits, grain and tobacco. Industry is fairly limited, and deals mainly with leatherworking, manufacture of tobacco products as well as weaving and dyeing of coarse cloth. Bitlis is connected to other urban centres by road, including Tatvan on Lake Van, 25 km to the northeast, and the cities of Muş (Mush), 100 km northwest, and Diyarbakır, 200 km to the west. The climate of Bitlis can be harsh, with long winters and heavy snowfalls. Summers are hot, and often humid. Since the local elections of March 2019, the Mayor of Bitlis is Nesrullah Tanğlay. History Ancient and medieval The origin of the name Bitlis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erzurum
Erzurum (; ) is a List of cities in Turkey, city in eastern Anatolia, Turkey. It is the largest city and capital of Erzurum Province and is 1,900 meters (6,233 feet) above sea level. Erzurum had a population of 367,250 in 2010. The city uses the double-headed eagle as its coat-of-arms, a motif that has been a common symbol throughout Anatolia since the Bronze Age. Erzurum has winter sports facilities and hosted the 2011 Winter Universiade. Name and etymology The city was originally known in Armenian language, Armenian as Karno K'aghak' ( hy, Կարնոյ քաղաք), meaning city of Karin, to distinguish it from the district of Karin (wikt:Կարին, Կարին). It is presumed its name was derived from a local tribe called the Karenitis. Darbinian, M. "Erzurum," Armenian Soviet Encyclopedia. Yerevan: Armenian Academy of Sciences, 1978, vol. 4, p. 93. An alternate theory contends that a local princely family, the Kamsarakans, the Armenian off-shoot of the Iranian House of K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patnos
Patnos (Armenian language, Armenian: Բադնոց, transliteration, Latin transliteration: Badnoc‘ or Patnoc‘, Kurdish language, Kurdish: Panos) was a historically important Armenian city, is now a district of Ağrı Province of Turkey on a plain surrounded by high mountains including Süphan, watered by tributaries of the Murat River. 82 km south of the city of Ağrı on the road to Van, Turkey, Van. The mayor is Emrah Kılıç (Peoples' Democratic Party (Turkey), HDP). The plain has been settled since at least 1300BC and this was a centre of the Urartu civilisation. The city has many historical ruins from Urartian period. There are a number of places of historical interest around Patnos, including the castle of Aznavur Tepe, an impressive Urartu building. Today Patnos is a small town in an impoverished rural area. References Populated places in Ağrı Province Districts of Ağrı Province Kurdish settlements in Turkey Important Bird Areas of Turkey {{Ağrı ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrust Fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks. Thrust geometry and nomenclature Reverse faults A thrust fault is a type of reverse fault that has a dip of 45 degrees or less. If the angle of the fault plane is lower (often less than 15 degrees from the horizontal) and the displacement of the overlying block is large (often in the kilometer range) the fault is called an ''overthrust'' or ''overthrust fault''. Erosion can remove part of the overlying block, creating a ''fenster'' (or '' window'') – when the underlying block is exposed only in a relatively small area. When erosion removes most of the overlying block, leaving island-like remnants resting on the lower block, the remnants are called ''klippen'' (singular '' klippe''). Blind thrust faults If the fault plane terminates before it reaches the Earth's surface, it is referred to as a ''blind thrust'' fault. Because of the lack of surface evidence, blind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Anatolian Fault
The North Anatolian Fault (NAF) ( tr, Kuzey Anadolu Fay Hattı) is an active right-lateral strike-slip fault in northern Anatolia, and is the transform boundary between the Eurasian Plate and the Anatolian Plate. The fault extends westward from a junction with the East Anatolian Fault at the Karliova Triple Junction in eastern Turkey, across northern Turkey and into the Aegean Sea for a length of 1500 kilometers. It runs about 20 km south of Istanbul. The North Anatolian Fault is similar in many ways to the San Andreas Fault in California. Both are continental transforms with similar lengths and slip rates. The Sea of Marmara near Istanbul is an extensional basin similar to the Salton Trough in California, where a releasing bend in the strike-slip system creates a pull-apart basin. Significant earthquakes Since the disastrous 1939 Erzincan earthquake, there have been seven earthquakes measuring over 7.0 in magnitude, each happening at a point progressively further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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