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1949 Tierra Del Fuego Earthquake
The 1949 Tierra del Fuego earthquakes occurred slightly more than eight hours apart on 17 December. Their epicenters were located in the east of the Chilean Tierra del Fuego Province, close to the Argentine border on the island of Tierra del Fuego. The two shocks measured 7.7 and 7.6 on the moment magnitude scale and were the most powerful ever recorded in the south of Argentina and one of the most powerful in austral Chile. They were felt with intensities as high as VIII (''Severe'') on the Mercalli intensity scale, and affected the settlements of Punta Arenas and Río Gallegos. See also * List of earthquakes in 1949 * List of earthquakes in Chile * List of earthquakes in Argentina References External links * Instituto Nacional de Prevención Sísmica''Listado de Terremotos Históricos'' * 1949 Events January * January 1 – A United Nations-sponsored ceasefire brings an end to the Indo-Pakistani War of 1947. The war results in a stalemate and the divis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doublet Earthquake
__NOTOC__ In seismology, doublet earthquakes – and more generally, multiplet earthquakes – were originally identified as multiple earthquakes with nearly identical waveforms originating from the same location. They are now characterized as distinct earthquake sequences having two (or more) main shocks of similar magnitude, sometimes occurring within tens of seconds, but sometimes separated by years. The similarity of magnitude – often within 0.4 magnitude – distinguishes multiplet events from aftershocks, which start at about 1.2 magnitude less than the parent shock ( Båth's law) and decrease in magnitude and frequency according to known laws. Doublet/multiplet events also have nearly identical seismic waveforms, as they come from the same rupture zone and stress field, whereas aftershocks, being peripheral to the main rupture, typically reflect more diverse circumstances of origin. Multiplet events overlap in their focal fields (rupture zones), which can be up 100 kilome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In Chile
__NOTOC__ Chile lies in a region which is adjacent to the fast-moving Nazca plate, and has high tectonic activity. The records for earlier centuries are apparently incomplete. Of the Lists of earthquakes#Strongest earthquakes by magnitude, world's 46 known earthquakes with M ≥ 8.5 since the year 1500, one-third occurred in Chile and are shown in the map to the side. Some virtually have the same epicenters like the 1604 Arica earthquake, 1604 and 1868 Arica earthquake, 1868 (in Arica), the 1730 Valparaíso earthquake, 1730 and 1822 (in Valparaíso), the 1751 Concepción earthquake, 1751 and 1835 Concepción earthquake, 1835 (in Concepción), and the 1575 Valdivia earthquake, 1575 and 1837 Valdivia earthquake, 1837 (in Valdivia). The strongest known recorded in modern times was also in Chile, the 1960 Valdivia earthquake. Earthquakes See also *Geology of Chile References * Servicio sismológico Universidad de ChileSismos importantes o destructivos desde 1570Historic World ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1949 In Chile
The following lists events that happened during 1949 in Chile. Incumbents *President of Chile: Gabriel González Videla Events January *14 January - The law granting Chilean women the right to vote in parliamentary and presidential elections is published. February *5 February - Chilean Army Captain Alberto Larraguibel breaks the high Jump world record with his horse Huaso, overcoming an obstacle of 2.47 meters. March *6 March – Chilean parliamentary election, 1949 April *19 April - In the Araucania Region, an earthquake measuring 7.3 degrees on the Richter scale mainly affected the cities of Angol, Temuco and Los Angeles, leaving 35 dead, 155 injured and 2,065 homeless. July * 15 July – Chile dismisses two consuls in New York City because of alleged Communist ties. * 16 July – Chile disenfranchises female Communist voters. August *6 August - Condorito is published for the first time in Okey magazine. *16 August And 17 August - Demonstrations are held in Santia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1949 In Argentina
Events January * January 1 – A United Nations-sponsored ceasefire brings an end to the Indo-Pakistani War of 1947. The war results in a stalemate and the division of Kashmir, which still continues as of 2025 * January 2 – Luis Muñoz Marín becomes the first democratically elected Governor of Puerto Rico. * January 11 – The first "networked" television broadcasts take place, as KDKA-TV in Pittsburgh, Pennsylvania, goes on the air, connecting east coast and mid-west programming in the United States. * January 16 – Şemsettin Günaltay forms the new government of Turkey. It is the 18th government, last One-party state, single party government of the Republican People's Party. * January 17 – The first Volkswagen Beetle, VW Type 1 to arrive in the United States, a 1948 model, is brought to New York City, New York by Dutch businessman Ben Pon Sr., Ben Pon. Unable to interest dealers or importers in the Volkswagen, Pon sells the sample car to pay his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Presidential Republic (1925–1973)
The Presidential Republic () is the period in the history of Chile spanning from the approval of the 1925 Constitution on 18 September 1925, under the government of Arturo Alessandri Palma, to the overthrow of the Popular Unity government headed by the President Salvador Allende on 11 September 1973. The period is concurrent with the "Inward Development" (''Desarrollo hacia adentro'') period in Chilean economic history. Carlos Ibáñez and Arturo Alessandri Palma Headed by Colonel Marmaduque Grove, left-wing troops deposed the September Junta in the 1925 coup, and handed power to General Pedro Dartnell as interim president, with the hope of recalling Arturo Alessandri Palma from exile. Dartnell, however, decided to form another junta, the January Junta, which ended with Alessandri's return on March 20, 1925. Alessandri had a new Constitution drafted, and approved in a referendum by 134,421 voters on August 30. The Constitution, which was promulgated on September 18, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Magallanes Region
History is the systematic study of the past, focusing primarily on the human past. As an academic discipline, it analyses and interprets evidence to construct narratives about what happened and explain why it happened. Some theorists categorize history as a social science, while others see it as part of the humanities or consider it a hybrid discipline. Similar debates surround the purpose of history—for example, whether its main aim is theoretical, to uncover the truth, or practical, to learn lessons from the past. In a more general sense, the term ''history'' refers not to an academic field but to the past itself, times in the past, or to individual texts about the past. Historical research relies on primary and secondary sources to reconstruct past events and validate interpretations. Source criticism is used to evaluate these sources, assessing their authenticity, content, and reliability. Historians strive to integrate the perspectives of several sources to develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Tierra Del Fuego
Tierra del Fuego (, ; Spanish for "Land of Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South America, South American mainland, across the Strait of Magellan. The archipelago consists of the main island, Isla Grande de Tierra del Fuego, with an area of , along with numerous smaller islands, including Cape Horn and Diego Ramírez Islands. The western part of the Tierra del Fuego archipelago, about two-thirds including its many islands, is part of Chile, and the eastern part is part of Argentina. The southernmost extent of the archipelago, Cape Horn, lies just north of latitude 56th parallel south, 56°S. The earliest-known human settlement in Tierra del Fuego dates to approximately 8,000 BC. Europeans first explored the islands during Ferdinand Magellan's expedition of 1520. ''Tierra del Fuego'' ("Land of Fire") and similar names stem from sightings of the many fires that the inhabitants built along the coastline and possibly even in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In Chile
__NOTOC__ Chile lies in a region which is adjacent to the fast-moving Nazca plate, and has high tectonic activity. The records for earlier centuries are apparently incomplete. Of the world's 46 known earthquakes with M ≥ 8.5 since the year 1500, one-third occurred in Chile and are shown in the map to the side. Some virtually have the same epicenters like the 1604 and 1868 (in Arica), the 1730 and 1822 (in Valparaíso), the 1751 and 1835 (in Concepción), and the 1575 and 1837 (in Valdivia). The strongest known recorded in modern times was also in Chile, the 1960 Valdivia earthquake. Earthquakes See also *Geology of Chile References * Servicio sismológico Universidad de ChileSismos importantes o destructivos desde 1570Historic World Earthquakes: Chile United States Geological Survey Further reading * * {{DEFAULTSORT:List of Earthquakes in Chile Earthquakes Chile Chile, officially the Republic of Chile, is a country in western South America. It is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In Argentina
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] |
List Of Earthquakes In Argentina ...
This is a list of earthquakes in Argentina. * Details are approximate for old events. * Magnitude is measured in the Richter scale. * Intensity is measured in the Mercalli intensity scale. * Depth is given in miles. 1600–1899 20th century 21st century See also * List of earthquakes in Mendoza Province References * Instituto Nacional de Prevención Sísmica''Listado de Terremotos Históricos'' {{Argentina topics Earthquakes Argentina Earthquakes 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 c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In 1949
This is a list of earthquakes in 1949. 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 as they wouldn't have generated significant media interest. All dates are listed according to UTC time. Three events took up the vast majority of the deaths for 1949. The events happened during a volatile mid year period seismically speaking. Firstly in Tajikistan in July 12,000 were killed. A few weeks later in early August a quake struck Ecuador leaving 6,000 dead. In mid August Turkey suffered from an earthquake leaving another 320 dead. Also in this part of the year was the largest quake, a magnitude 8.0 in Canada. 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 Jul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicenter
The epicenter (), epicentre, or 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. Determination The primary purpose of a seismometer is to locate the initiating points of earthquake epicenters. The secondary purpose, of determining the 'size' or magnitude must be calculated after the precise location is known. The earliest seismographs were designed to give a sense of the direction of the first motions from an earthquake. The Chinese frog seismograph would have dropped its ball in the general compass direction of the earthquake, assuming a strong positive pulse. We now know that first motions can be in almost any direction depending on the type of initiating rupture ( focal mechanism). The first refinement that allowed a more precise determination of the location was the use of a time scale. Instead of merely noting, or recording, the absolute motions of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
