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1957 San Francisco Earthquake
The 1957 San Francisco earthquake (also known as the Daly City earthquake of 1957) occurred on March 22 at 11:44:22 local time with a moment magnitude of 5.7 and a maximum Mercalli Intensity of VII (''Very strong''). It was located just off the San Francisco Peninsula near the San Andreas Fault and was felt in a limited portion of Northern and Central California. There was a non-destructive foreshock and aftershock sequence that lasted for several months. With financial losses of around US$1 million, damage was considered minimal, with one death and forty injuries. Tectonic setting The San Andreas Fault System (SAFS) is a collection of faults that accommodates differential motion between the Pacific and North American plates and extends from the Mendocino triple junction in the north to the Salton Sea in the south. While the majority of movement occurs as right-lateral strike-slip on the significant branches of the system, including the San Jacinto and Hayward faults tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moment Magnitude Scale
The moment magnitude scale (MMS; denoted explicitly with or Mwg, 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. 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 use the term "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 saturatethat 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 United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daly City, California
Daly City () is the second-most populous city in San Mateo County, California, United States. Located in the San Francisco Bay Area, and immediately south of San Francisco (sharing its northern border with almost all of San Francisco's southern border), it is named for businessman and landowner John Donald Daly. Its population was 104,901 at the 2020 United States census, 2020 census. The Race and ethnicity in the United States Census, racial makeup of Daly City was 57.3% Asian Americans, Asian, 11.7% non-Hispanic White, and 23.1% Hispanic or Latino of any race in the 2020 United States census, 2020 census. Notably, 33.2% of the population of Daly City is Filipino. History Archaeological evidence suggests the San Francisco Bay area has been inhabited as early as 2700 BC. People of the Ohlone languages, Ohlone language group probably occupied Northern California from at least the year A.D. 500. Though the Californias, their territory had been Viceroyalty of New Spain, claimed b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of The San Francisco Bay Area
The San Francisco Bay Area, commonly known as the Bay Area, is a List of regions of California, region of California surrounding and including San Francisco Bay, and anchored by the cities of Oakland, San Francisco, and San Jose, California, San Jose. The Association of Bay Area Governments defines the Bay Area as including the nine counties that border the estuary, estuaries of San Francisco Bay, San Pablo Bay, and Suisun Bay: Alameda County, California, Alameda, Contra Costa County, California, Contra Costa, Marin County, California, Marin, Napa County, California, Napa, San Mateo County, California, San Mateo, Santa Clara County, California, Santa Clara, Solano County, California, Solano, Sonoma County, California, Sonoma, and San Francisco County, California, San Francisco. Other definitions may be either smaller or larger, and may include neighboring counties which are not officially part of the San Francisco Bay Area, such as the Central Coast (California), Central Coast c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
March 1957 In The United States
March is the third month of the year in both the Julian calendar, Julian and Gregorian calendars. Its length is 31 days. In the Northern Hemisphere, the Meteorology, meteorological beginning of Spring (season), spring occurs on the first day of March. The March equinox on the 20 or 21 marks the astronomical beginning of spring in the Northern Hemisphere and the beginning of autumn in the Southern Hemisphere, where September is the seasonal equivalent of the Northern Hemisphere's March. History The name of March comes from ''Martius (month), Martius'', the first month of the earliest Roman calendar. It was named after Mars (mythology), Mars, the List of Roman deities, Roman god of war, and an ancestor of the Roman people through his sons Romulus and Remus. His month ''Martius'' was the beginning of the season for warfare, and the Roman festivals, festivals held in his honor during the month were mirrored by others in October, when the season for these activities came to a c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1957 Earthquakes
Events January * January 1 – The Saarland joins West Germany. * January 3 – Hamilton Watch Company introduces the first electric watch. * January 5 – South African player Russell Endean becomes the first batsman to be Dismissal (cricket), dismissed for having handled the ball, in Test cricket. * January 9 – British Prime Minister Anthony Eden resigns. * January 10 – Harold Macmillan becomes Prime Minister of the United Kingdom. * January 11 – The African Convention is founded in Dakar. * January 14 – Kripalu Maharaj is named fifth Jagadguru (world teacher), after giving seven days of speeches before 500 Hindu scholars. * January 15 – The film ''Throne of Blood'', Akira Kurosawa's reworking of ''Macbeth'', is released in Japan. * January 20 ** Israel withdraws from the Sinai Peninsula (captured from Egypt on October 29, 1956). * January 26 – The Ibirapuera Planetarium (the first in the Southern Hemisphere) is inaugurated in the city of São Paulo, Brazil. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In California
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] |
San Francisco Historical Society
The San Francisco Historical Society is a nonprofit organization dedicated to the preservation, interpretation, and presentation of the history of San Francisco and the surrounding San Francisco Bay Area, Bay Area. It is a membership-based organization that holds monthly speaking programs, conducts walking tours of San Francisco, provides educational resources for grade schools and publishes original research. It owns the Barbary Coast Trail walking tour and publishes the biannual journal ''Argonaut''. As of 2021, it has just under 2,000 members. History The San Francisco Historical Society was founded in 1988 by historian Charles A. Fracchia. In February 2002, the San Francisco Historical Society merged with the Museum of the City of San Francisco to create the San Francisco Museum and Historical Society, which the San Francisco municipal government recognized as the official historical museum of San Francisco. One of the purposes of the merger of the two organizations was to put ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on its hundredth anniversary, was "Earth Science in the Pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Government Printing Office
The United States Government Publishing Office (USGPO or GPO), formerly the United States Government Printing Office, is an agency of the Legislature, legislative branch of the Federal government of the United States, United States federal government. The office produces and distributes information products and services for all three branches of the Federal Government, including U.S. passports for the Department of State as well as the official publications of the Supreme Court of the United States, Supreme Court, the United States Congress, Congress, the Executive Office of the President of the United States, Executive Office of the President, United States federal executive departments, executive departments, and Independent agencies of the United States government, independent agencies. An act of Congress changed the office's name to its current form in 2014. History Establishment of the Government Printing Office The Government Printing Office was created by Joint resol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Seismological Centre
The International Seismological Centre (ISC) is a non-governmental, nonprofit organisation charged with the final collection, definitive analysis and publication of global seismicity. The ISC was formed in 1964 as an international organisation independent of national governments that would carry on the work of the International Seismological Summary in collecting and analyzing seismic data from around the world, and particularly to handle increased flow of data from the World-Wide Standard Seismograph Network (WWSSN), also established that year. The ISC considers its prime task to be the collection and re-analysis of all available earthquake seismic date in order to produce definitive data on earthquakes. The ISC's catalog is considered "the most complete and authoritative final depository of global earthquake parameter data." Purpose The main scientific goal of the centre is the definitive compilation of earthquake information and the readings on which they are based. Collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In The United States
The following is a list of notable earthquakes and tsunamis which had their epicenter in areas that are now part of the United States with the latter affecting areas of the United States. Those in ''italics'' were not part of the United States when the event occurred. List of earthquakes Earthquake swarms which affected the United States: * 1962–71 Denver earthquake swarm * Enola earthquake swarm * 2008 Reno earthquakes * Guy-Greenbrier earthquake swarm * Oklahoma earthquake swarms (2009–present) Earthquakes which affected the United States but whose epicenters were outside the United States borders: * 1925 Charlevoix–Kamouraska earthquake – magnitude 6.2 earthquake, no injuries or fatalities anywhere * 1979 Imperial Valley earthquake – magnitude 6.4 earthquake with an epicenter less than 1 km inside Mexico – significant damage and injuries on both sides of the border (60 in the US) * 2010 Baja California earthquake (Mexico near S California) – magnitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In California
A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but lists are frequently written down on paper, or maintained electronically. Lists are "most frequently a tool", and "one does not ''read'' but only ''uses'' a list: one looks up the relevant information in it, but usually does not need to deal with it as a whole". Lucie Doležalová,The Potential and Limitations of Studying Lists, in Lucie Doležalová, ed., ''The Charm of a List: From the Sumerians to Computerised Data Processing'' (2009). Purpose It has been observed that, with a few exceptions, "the scholarship on lists remains fragmented". David Wallechinsky, a co-author of '' The Book of Lists'', described the attraction of lists as being "because we live in an era of overstimulation, especially in terms of information, and lists help ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
