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1957 Guerrero Earthquake
The 1957 Guerrero earthquake occurred on 28 July at 08:40 UTC. It had a magnitude of 7.6 and a maximum perceived intensity of VII (''very strong'') on the Modified Mercalli intensity scale. Mexico City and Chilpancingo were particularly badly affected. It caused the deaths of between 54 and 160 people. A small tsunami was triggered but caused little damage. Tectonic setting The state of Guerrero lies adjacent to part of the Middle America Trench where the Cocos Plate is being subducted beneath the North American Plate. The convergence between these plates at this location is about 65 mm per year. There have been many large and destructive earthquakes in the past, such as the M 7.6 1911 Guerrero earthquake. The Guerrero seismic gap is a ca. 200 km long segment of the subduction interface, which has not had a large earthquake since the 1911 event. Although several slow earthquakes have been observed in that time interval, an earthquake in the range M 7.9–8.0 could still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change also a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chilapa De Álvarez
Chilapa de Álvarez, informally known as Chilapa, is a town located in the Chilapa de Álvarez Municipality under the Mexican state of Guerrero. The town is located approximately 54 kilometers east of the state capital Chilpancingo. Chilapa's first official charter was issued by the Aztec government in the 15th century after the area's conquest by Moctezuma I in 1458. The Spanish officially designated the town ''Chilapa de Santa Maria de Asuncion'' in 1522; in the late 19th century it was renamed ''Chilapa de Álvarez'' in honor of Mexican president Juan Álvarez. Traces of human occupation in the area date to 1200 BC. Chilapa is noted for its large Saturday ''tianguis'', or Aztec market, and its crafts. Local culinary specialities of Chilapa include pozole, chalupas, ''pan de chilapa'' bread, and homemade mezcal. The municipal cathedral has a mechanical figurine of Juan Diego, who appears at a window in the cathedral spire and drops rose petals onto the plaza below. Every August ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
July 1957 Events In Mexico
July is the seventh month of the year in the Julian and Gregorian calendars and is the fourth of seven months to have a length of 31 days. It was named by the Roman Senate in honour of Roman general Julius Caesar in 44 B.C., it being the month of his birth. Before then it was called Quintilis, being the fifth month of the calendar that started with March. It is on average the warmest month in most of the Northern Hemisphere, where it is the second month of summer, and the coldest month in much of the Southern Hemisphere, where it is the second month of winter. The second half of the year commences in July. In the Southern Hemisphere, July is the seasonal equivalent of January in the Northern hemisphere. "Dog days" are considered to begin in early July in the Northern Hemisphere, when the hot sultry weather of summer usually starts. Spring lambs born in late winter or early spring are usually sold before 1 July. July symbols *July's birthstone is the ruby, which symbolize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
