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1687 Peru Earthquake
The 1687 Peru earthquake occurred at 11:30 UTC on 20 October. It had an estimated magnitude of 8.4–8.7 and caused severe damage to Lima, Callao and Ica. It triggered a tsunami and overall about 5,000 people died. Tectonic setting The earthquake occurred along the boundary between the Nazca Plate and the South American Plate. The earthquake is likely to be a result of thrust faulting, caused by the subduction of the Nazca plate beneath the South American plate. The coastal parts of Peru and Chile have a history of great megathrust earthquakes originating from this plate boundary, such as the 1960 Valdivia earthquake. Damage The port of Pisco was completely destroyed by the tsunami, with at least three ships being swept over the remains of the town. Characteristics The earthquake was probably followed by another large event further to the south. A magnitude of 8.7 has been estimated from tsunami runup heights and by comparison with the earthquake of 1974. The tsunami was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moment Magnitude Scale
The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 paper by Thomas C. Hanks and Hiroo Kanamori. Similar to the local magnitude scale, local magnitude/Richter scale () defined by Charles Francis Richter in 1935, it uses a logarithmic scale; small earthquakes have approximately the same magnitudes on both scales. Despite the difference, news media often says "Richter scale" when referring to the moment magnitude scale. Moment magnitude () is considered the authoritative magnitude scale for ranking earthquakes by size. It is more directly related to the energy of an earthquake than other scales, and does not saturate—that is, it does not underestimate magnitudes as other scales do in certain conditions. It has become the standard scale used by seismological authorities like the U.S. Geological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chilean Wheat Cycle
In Chilean historiography, the wheat cycle (Spanish: ''ciclo triguero'') refers to two episodes of booming wheat exports and related changes in society and agriculture. The first cycle occurred from 1687 to the independence wars and was caused by heavy demand in Peru. The importance of wheat had led the 18th century in Chile to be labelled the wheat century (Spanish: ''siglo del trigo''). The second cycle started in the mid-19th century, fueled by the California and Australian gold rushes and ended definitively during the Long depression in the 1870s. First cycle Chile has a history of exporting cereals to Peru dating back to 1687 when Peru was struck by both an earthquake and a stem rust epidemic. Villalobos, Sergio; Silva, Osvaldo; Silva, Fernando and Estelle, Patricio. 1974. ''Historia De Chile''. Editorial Universitaria, Chile. p 155–160. Chilean soil and climatic conditions were better for cereal production than those of Peru and Chilean wheat was cheaper and of better qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1687 Tsunamis
Events January–March * January 3 – With the end of latest of the Savoyard–Waldensian wars in the Duchy of Savoy between the Savoyard government and Protestant Italians known as the Waldensians, Victor Amadeus III, Duke of Savoy, carries out the release of 3,847 surviving prisoners and their families, who had forcibly been converted to Catholicism, and permits the group to emigrate to Switzerland. * January 8 – Richard Talbot, 1st Earl of Tyrconnell, is appointed as the last Lord Deputy of Ireland by the English crown, and begins efforts to include more Roman Catholic Irishmen in the administration. Upon the removal of King James II in England and Scotland, the Earl of Tyrconnell loses his job and is replaced by James, who reigns briefly as King of Ireland until William III establishes his rule over the isle. * January 27 – In one of the most sensational cases in England in the 17th century, midwife Mary Hobry murders her abusive husband, Denis H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megathrust Earthquakes In Peru
Megathrust earthquakes occur at convergent plate boundaries, where one tectonic plate is forced underneath another. The earthquakes are caused by slip along the thrust fault that forms the contact between the two plates. These interplate earthquakes are the planet's most powerful, with moment magnitudes (''Mw'') that can exceed 9.0. Since 1900, all earthquakes of magnitude 9.0 or greater have been megathrust earthquakes. The thrust faults responsible for megathrust earthquakes often lie at the bottom of oceanic trenches; in such cases, the earthquakes can abruptly displace the sea floor over a large area. As a result, megathrust earthquakes often generate tsunamis that are considerably more destructive than the earthquakes themselves. Teletsunamis can cross ocean basins to devastate areas far from the original earthquake. Terminology and mechanism The term ''megathrust'' refers to an extremely large thrust fault, typically formed at the plate interface along a subduction zone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Editorial Universitaria
Editorial Universitaria is Chilean university press based in Santiago. It was established in 1947 with funds from private people and from the University of Chile. During its existence, it has published the works of generations influential Chilean scientists and intellectuals. The press publishes, among other things, children's literature Children's literature or juvenile literature includes stories, books, magazines, and poems that are created for children. Modern children's literature is classified in two different ways: genre or the intended age of the reader. Children's .... References 1947 establishments in Chile University of Chile Book publishing companies of Chile Book publishing companies based in Santiago University presses of Chile Publishing companies established in 1947 {{Chile-university-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University Press
Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by Henry VIII of England, King Henry VIII in 1534, it is the oldest university press A university press is an academic publishing house specializing in monographs and scholarly journals. Most are nonprofit organizations and an integral component of a large research university. They publish work that has been reviewed by schola ... in the world. It is also the King's Printer. Cambridge University Press is a department of the University of Cambridge and is both an academic and educational publisher. It became part of Cambridge University Press & Assessment, following a merger with Cambridge Assessment in 2021. With a global sales presence, publishing hubs, and offices in more than 40 Country, countries, it publishes over 50,000 titles by authors from over 100 countries. Its publishing includes more than 380 academic journals, monographs, reference works, school and uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Historical Earthquakes
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the beginning of the 20th century. As the events listed here occurred before routine Seismometer, instrumental recordings, they rely mainly on the analysis of written sources. There is often significant uncertainty in location and magnitude and sometimes date for each earthquake. The number of fatalities is also often highly uncertain, particularly for the older events. Pre-11th century 11th–18th centuries 19th century Source for all events with 'USGS' labelled as the source United States Geological Survey (USGS''Note: Magnitudes are generally estimations from intensity data. When no magnitude was available, the Mercalli intensity scale, maximum intensity, written as a Roman numeral from I to XII, is given.'' See also * :Articles on pre-1900 earthquakes * List of 20th-century earthquakes * List of 21st-century earthquakes * List of tsunamis * Lists of earthquakes * List of megath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In Peru
Earthquakes in Peru are common occurrences as the country is located in a seismic zone. The interface between the Nazca and South American tectonic plates is located near the Peruvian coast. The South American Plate is moving over the Nazca Plate at a rate of per year. This earthquakes occur as thrust faulting on the interface between the two plates, with the South American Plate moving towards the sea over the Nazca Plate. The same process has caused the rise of the Andes mountain range and the creation of the Peru–Chile Trench, as well as volcanism in the Peruvian highlands. Geology of Peru The oldest rocks in Peru date to the Precambrian and are more than two billion years old. Along the southern coast, granulite and charnockite shows reworking by an ancient orogeny mountain-building event. Situated close to the Peru-Chile Trench, these rocks have anomalously high strontium isotope ratios, which suggest recent calc-alkaline volcanism. In the Eastern Cordillera of Peru, Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wine Cellar
A wine cellar is a storage room for wine in bottles or barrels, or more rarely in carboys, amphorae, or plastic containers. In an ''active'' wine cellar, important factors such as temperature and humidity are maintained by a climate control system. In contrast, ''passive'' wine cellars are not climate-controlled, and are usually built underground to reduce temperature swings. An aboveground wine cellar is often called a ''wine room'', while a small wine cellar (fewer than 500 bottles) is sometimes termed a ''wine closet''. The household department responsible for the storage, care and service of wine in a great mediaeval house was termed the buttery. Large wine cellars date back over 3,700 years. Purpose Wine cellars protect alcoholic beverages from potentially harmful external influences, providing darkness, constant temperature, and constant humidity. Wine is a natural, perishable food product issued from fermentation of fruit. Left exposed to heat, light, vibration or fluctuati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ica, Peru
Ica () (Quechua: ''Ika'') is a city and the capital of the Department of Ica in southern Peru. While the area was long inhabited by varying cultures of indigenous peoples, the Spanish ''conquistador'' Jerónimo Luis de Cabrera claimed its founding in 1563. As of the 2017 census, it had a population of over 282,407. The city suffered extensive damage and loss of life during the 2007 Peru earthquake. Location The city is located on the Ica River about to the south of Lima, along the desert coast of southern Peru. Further south along the Pan-American Highway lies the city of Nazca. History In 2007, researchers found the fossil remains of a prehistoric penguin, ''Icadyptes salasi'', which inhabited the Atacama Desert about 30 million years ago. Scientists estimate it was about tall, with a beak. Evidence of prehistoric indigenous civilizations has been found in the nearby deserts, such as that of Paracas. Other cultures include the Chincha and the Inca, the latter of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epidemic
An epidemic (from Ancient Greek, Greek ἐπί ''epi'' "upon or above" and δῆμος ''demos'' "people") is the rapid spread of disease to a large number of patients among a given population within an area in a short period of time. Epidemics of infectious diseases are generally caused by several factors including a significant change in the ecology of the areal population (e.g., increased stress maybe additional reason or increase in the density of a vector species), the introduction of an emerging pathogen to an areal population (by movement of pathogen or host) or an unexpected genetic change that is in the pathogen reservoir. Generally, epidemics concerns with the patterns of infectious disease spread. An epidemic may occur when host immunity to either an established pathogen or newly emerging novel pathogen is suddenly reduced below that found in the endemic equilibrium and the transmission threshold is exceeded. For example, in meningococcal infections, an attack rate in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stem Rust
Stem rust, also known as cereal rust, black rust, red rust or red dust, is caused by the fungus ''Puccinia graminis'', which causes significant disease in cereal crops. Crop species that are affected by the disease include bread wheat, durum wheat, barley and triticale. These diseases have affected cereal farming throughout history. The annual recurrence of stem rust of wheat in North Indian plains was discovered by Prof. K.C. Mehta. Since the 1950s, wheat strains bred to be resistant to stem rust have become available. Fungicides effective against stem rust are available as well. In 1999 a new virulent race of stem rust was identified against which most current wheat strains show no resistance. The race was named TTKSK (e.g. isolate Ug99). An epidemic of stem rust on wheat caused by race TTKSK spread across Africa, Asia and the Middle East, causing major concern due to the large numbers of people dependent on wheat for sustenance, thus threatening global food security. An o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
