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33 relations: Amplitude, Attenuation, Beno Gutenberg, California Institute of Technology, Carnegie Institution for Science, Charles Francis Richter, Chicxulub crater, Energy, Epicenter, Harry O. Wood, Hypocenter, IRIS Consortium, John August Anderson, John Milne, Kiyoo Wadati, Logarithm, Mercalli intensity scale, Microearthquake, Micrometre, Moment magnitude scale, Pacific Tsunami Warning Center, Rohn emergency scale, Rossi–Forel scale, Seismic intensity scales, Seismic magnitude scales, Seismic moment, Seismometer, Shadow zone, Southern California, Surface wave magnitude, United States Geological Survey, 1935 in science, 1960 Valdivia earthquake.
Amplitude
The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period).
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Attenuation
In physics, attenuation or, in some contexts, extinction is the gradual loss of flux intensity through a medium.
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Beno Gutenberg
Beno Gutenberg (June 4, 1889 – January 25, 1960) was a German-American seismologist who made several important contributions to the science.
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California Institute of Technology
The California Institute of Technology (abbreviated Caltech)The university itself only spells its short form as "Caltech"; other spellings such as.
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Carnegie Institution for Science
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research.
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Charles Francis Richter
Charles Francis Richter; April 26, 1900 – September 30, 1985) was an American seismologist and physicist. Richter is most famous as the creator of the Richter magnitude scale, which, until the development of the moment magnitude scale in 1979, quantified the size of earthquakes. Inspired by Kiyoo Wadati’s 1928 paper on shallow and deep earthquakes, Richter first used the scale in 1935 after developing it in collaboration with Beno Gutenberg; both worked at the California Institute of Technology. The quote “logarithmic plots are a device of the devil” is attributed to Richter.
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Chicxulub crater
The Chicxulub crater is an impact crater buried underneath the Yucatán Peninsula in Mexico.
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Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
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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.
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Harry O. Wood
Harry Oscar Wood (1879 – 1958) was an American seismologist who made several significant contributions in the field of seismology in the early twentieth-century.
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Hypocenter
A hypocenter (or hypocentre) (from ὑπόκεντρον for 'below the center') is the point of origin of an earthquake or a subsurface nuclear explosion.
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IRIS Consortium
IRIS (Incorporated Research Institutions for Seismology) is a university research consortium dedicated to exploring the Earth's interior through the collection and distribution of seismographic data.
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John August Anderson
John August Anderson (August 7, 1876 – December 2, 1959) was an American astronomer.
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John Milne
John Milne (30 December 1850 – 31 July 1913) was a British geologist and mining engineer who worked on a horizontal seismograph.
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Kiyoo Wadati
was an early seismologist at the Central Meteorological Observatory of Japan (now known as the Japan Meteorological Agency), researching deep (subduction zone) earthquakes.
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Logarithm
In mathematics, the logarithm is the inverse function to exponentiation.
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Mercalli intensity scale
The Mercalli intensity scale is a seismic intensity scale used for measuring the intensity of an earthquake.
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Microearthquake
A microearthquake (or microquake) is a very low intensity earthquake which is 2.0 or less in magnitude.
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Micrometre
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".
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Moment magnitude scale
The moment magnitude scale (MMS; denoted as Mw or M) is one of many seismic magnitude scales used to measure the size of earthquakes.
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Pacific Tsunami Warning Center
The Pacific Tsunami Warning Center (PTWC) is one of two tsunami warning centers that are operated by NOAA in the United States.
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Rohn emergency scale
The Rohn emergency scaleRohn, Eli and Blackmore, Denis (2009), International Journal of Information Systems for Crisis Response Management (IJISCRAM), Volume 1, Issue 4, October 2009 is a scale on which the magnitude (intensity) of an emergency is measured.
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Rossi–Forel scale
The Rossi–Forel scale was one of the first seismic scales to reflect earthquake intensities.
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Seismic intensity scales
Seismic intensity scales categorize the intensity or severity of ground shaking (quaking) at a given location, such as resulting from an earthquake.
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Seismic magnitude scales
Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake.
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Seismic moment
Seismic moment is a quantity used by seismologists to measure the size of an earthquake.
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Seismometer
A seismometer is an instrument that measures motion of the ground, caused by, for example, an earthquake, a volcanic eruption, or the use of explosives.
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Shadow zone
A seismic shadow zone is an area of the Earth's surface where seismographs can only barely detect an earthquake after its seismic waves have passed through the Earth.
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Southern California
Southern California (colloquially known as SoCal) is a geographic and cultural region that generally comprises California's southernmost counties.
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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.
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United States Geological Survey
The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.
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1935 in science
The year 1935 in science and technology involved some significant events, listed below.
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1960 Valdivia earthquake
The 1960 Valdivia earthquake (Terremoto de Valdivia) or Great Chilean earthquake (Gran terremoto de Chile) of 22 May is the most powerful earthquake ever recorded.
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References
[1] https://en.wikipedia.org/wiki/Richter_magnitude_scale
