Richter scale


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Related to Richter scale: Moment magnitude scale, tsunami

Rich·ter scale

 (rĭk′tər)
n.
A logarithmic scale used to express the amount of energy released by an earthquake. Its values typically fall between 0 and 9, with each increase of 1 representing a 10-fold increase in energy.

[After Charles Francis Richter (1900-1985), American seismologist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Richter scale

(ˈrɪxtə)
n
(General Physics) a scale for expressing the magnitude of an earthquake in terms of the logarithm of the amplitude of the ground wave; values range from 0 to over 9. Compare Mercalli scale See also magnitude5
[C20: named after Charles Richter (1900–85), US seismologist]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

Rich′ter scale`


n.
a logarithmic scale for expressing the magnitude of an earthquake, a measurement under 5 considered minor and over 7 indicating major destruction.
[1935–40; after Charles French. Richter (1900–85), U.S. seismologist]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Rich·ter scale

(rĭk′tər)
A scale used to rate the strength or total energy of earthquakes. The scale has no upper limit but usually ranges from 1 to 9. Each increase in whole number represents a tenfold increase in magnitude, so that an earthquake rated as 5 is ten times as powerful as one rated as 4. An earthquake with a magnitude of 1 is detectable only by instruments (seismographs); one with a magnitude of 7 is a major earthquake. See Note at earthquake.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Richter scale - a logarithmic scale of 1 to 10 formerly used to express the magnitude of an earthquake on the basis of the size of seismograph oscillations
geology - a science that deals with the history of the earth as recorded in rocks
graduated table, ordered series, scale, scale of measurement - an ordered reference standard; "judging on a scale of 1 to 10"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

Richter scale

[ˈrɪxtəˌskeɪl] N (Geol) → escala f Richter
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

Richter scale

nRichterskala f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

Richter scale

[ˈrɪxtəʳ skeɪl] n the Richter scalela scala Richter
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
The earthquake, 8.1 on the Richter scale, hit Mexico City and adjoining region.
A quake measuring 4.9 on the Richter scale hit the islands of Kozushima and Miyakejima at 1:57 p.m., the agency said.
The region was struck by a series of tremors over 6.0 on the open-ended Richter scale early last year, with Chinese seismologists attributing the geologic activity to a collision between the Indian tectonic plate and the Asian-European tectonic plate.
The earlier quake, measuring 6.1 on the Richter scale, was centered off Nicaragua's west coast, causing slight building damage and several injuries in Managua, 50 miles away.
The country was previously hit by an earthquake measuring 5.5 on Richter Scale that struck off Indonesia's Ceram Sea-- a section of the Pacific Ocean forming one of the several small seas between Indonesia's islands--on July 22.
According to media reports tremors were felt in India within hours of an earthquake measuring 4.7 on the Richter scale hit Surat district in Gujarat Sunday morning.
Hani Zahran, director-general of the National Center for Earthquakes and Volcanoes, said the earthquake was 15 km deep and measured 3.7 on the Richter scale northwest of Sabia.
Summary: An earthquake measuring 3.5 on the Richter scale shook South Lebanon on Saturday, but no damage or casualties were reported.
Manchester has had five earthquakes already this month, between August 10 and August 23, with the highest magnitude measuring 2.5 on the Richter scale.
Seismologist Bennett Simpson, from the Royal Geographical Society, said: "It was a small earthquake in world terms but significant for the UK." But his colleagues say Britain is overdue for a quake measuring 5 or more on the Richter scale - 25 times more powerful that yesterday's tremors.
May 1994: Welford-on-Avon, near Stratford, was the epicentre of an earthquake measuring 3.1 on the Richter scale. The effects were felt in Stratford and as far away as Worcester.
An earthquake of 3.9 on the Richter scale hit the same areas at around 5:09 a.m., it added.