richter magnitude scale examples - EAS

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  1. The magnitude of an earthquake is basically determined by the Richter scale, from the logarithm of the wave amplitudes, that are recorded by an instrument called a seismograph. For example, a moderate earthquake shows a magnitude of 5.4 on the scale, whereas, a strong one shows a magnitude of 6.2.
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    How do you calculate the Richter magnitude?
    Richter scale magnitude is calculated from the maximum amplitude ‘A’ of the seismometer trace as shown in the figure below A0 is the seismometer reading produced by an Earthquake of standard size (i.e., a calibration earthquake). Generally A0 is 0.001 mm. This equation assumes that a distance of 100 km separates the seismometer and the epicentre.
    www.engineersdaily.com/2011/05/richter-scale-magnitud…
    How do you calculate the Richter scale?
    The Richter scale defines the magnitude of an earthquake to be R=log(IcIn) where Ic is the intensity of the earthquake and In is the intensity of a standard earthquake. Therefore, you can write the difference of two magnitudes as R2−R1=log(I2I1).
    www.sms-tsunami-warning.com/pages/richter-scale
    How to calculate Richter scale?
    The equation for Richter Magnitude is: ML= log10A(mm)+ (Distance correction factor) Here Ais the amplitude, in millimeters, measured directly from the photographic paper record of the Wood-Andersonseismometer, a special type of instrument. The distance factorcomes from a table that can be found in Richter's (1958) book Elementary Seismology.
    www.ux1.eiu.edu/~cfjps/1300/magnitude.html
    How high does the Richter scale go?
    Theoretically the Richter scale has no upper limit, but the yield point of the Earth's rocks imposes an effective limit between 9.0 and 9.5.
    www.britannica.com/science/Richter-scale
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    https://en.wikipedia.org/wiki/Richter_magnitude_scale

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    Because of various shortcomings of the original M L scale, most seismological authorities now use other similar scales, such as the moment magnitude scale (M w ), to report earthquake magnitudes, but much of the news media still refers to these as "Richter" magnitudes. All magnitude scales retain the logarithmic … See more

    The Richter scale /ˈrɪktər/ —also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale —is a measure of the strength of earthquakes, developed by See more

    The Richter scale was defined in 1935 for particular circumstances and instruments; the particular circumstances refer to it being defined for Southern California and "implicitly incorporates the attenuative properties of Southern California crust and mantle." The … See more

    These formulae for Richter magnitude ML  are alternatives to using Richter correlation tables based on Richter standard seismic event (, , ). Below, is the epicentral distance … See more

    1. ^ Kanamori 1978, p. 411. Hough (2007, pp. 122–126) discusses the name at some length.
    2. ^ McPhee, John (1998). Annals of the Former World. Farrar, Straus and Giroux. p. 608.
    3. ^ Kanamori 1978, p. 411; Richter 1935. See more

    Richter magnitudes image
    Development image

    Prior to the development of the magnitude scale, the only measure of an earthquake's strength or "size" was a subjective … See more

    The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs (adjustments are included to compensate for … See more

    1935 in science
    Rohn Emergency Scale for measuring the magnitude (intensity) of any emergency
    Seismic intensity scales See more

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  4. https://www.gi.alaska.edu/.../richter-magnitude-scale

    WebDec 16, 2022 · The Richter Magnitude Scale. February 04, 1985 / Larry Gedney and Neal Brown. Magnitude scales in general often seem to be devised with a devilish intent to mislead. Sometimes they don't even …

  5. https://www.usgs.gov/faqs/moment-magnitude-richter...

    WebEarthquake size, as measured by the Richter Scale is a well known, but not well understood, concept. The idea of a logarithmic earthquake magnitude scale was first developed by …

  6. https://www.britannica.com/science/Richter-scale

    Web7 rows · Jul 20, 1998 · In the decades that followed the creation of the original Richter scale, they developed the ...

    • MAGNITUDE LEVEL CATEGORY EFFECTS EARTHQUAKES PE…
      less than 1.0 to 2.9 micro generally not felt by people, ... more than 100,000
      3.0–3.9 minor felt by many people; no dama… 12,000–100,000
      4.0–4.9 light felt by all; minor breakage of ... 2,000–12,000
      5.0–5.9 moderate some damage to weak structu… 200–2,000
      See all 7 rows on www.britannica.com
  7. https://www.satcaweb.org/richters-magnitude-scale

    Web10 rows · Richters magnitude scale was developed by the physicist Charles F. Richter to measure the ...

    • - Magnitude Average earthquake effects
      Average earthquake effects 1.0-1.9 This type of earthquake is usu ...
      This type of earthquake is usu ... 2.0-2.9 Difficult to feel, but sensiti ...
      Difficult to feel, but sensiti ... 3.0-3.9 Typically felt by people at an ...
      See all 10 rows on www.satcaweb.org
  8. https://www.sms-tsunami-warning.com/pages/richter-scale

    WebThe Richter scale doesn't measure quake damage (see: Mercalli Scale) which is dependent on a variety of factors including population at the epicentre, terrain, depth, etc. An earthquake in a densely populated area …

  9. https://www.thoughtco.com/charles-richter-and...

    WebMar 04, 2019 · The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. The …

  10. https://sciencestruck.com/richter-scale-formula

    WebThe Richter scale formula measures and records the movement of the Earth at the epicenter of an earthquake. This number is then used to calculate the energy that has been released. This formula was developed …

  11. https://www.ntschools.org/cms/lib/NY19000908...

    Web(The height in the example is 23 millimeters.) • Place a straightedge between the distance to the epicenter (210 kilometers) and the height of the largest S-wave (23

  12. https://www.youtube.com/watch?v=kB09sne9n1I

    WebApr 22, 2013 · EXAMPLE: Using logarithms to measure the Richter scale. Worked example by David Butler. Features the Richter scale of earthquake magnitude, which …

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