Arias Intensity
The Arias Intensity (IA) is a measure of the strength of a ground motion. It determines the intensity of shaking by measuring the acceleration of transient seismic waves. It has been found to be a fairly reliable parameter to describe earthquake shaking necessary to trigger landslides. It was proposed by Chilean engineer Arturo Arias in 1970.
It is defined as the time-integral of the square of the ground acceleration:
I_A = \frac {\pi} {2g} \int_0^{T_d} a (t)^2 dt (m/s)
where g is the acceleration due to gravity and Td is the duration of signal above threshold. Theoretically the integral should be infinite.
The Arias Intensity could also alternatively be defined as the sum of all the squared acceleration values from seismic strong motion records.

This is an excerpt from the article Arias Intensity from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Arias Intensity at en.wikipedia.org was accessed 243 times in the last 30 days. (as of: 10/26/2014)
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Arias Intensity - Wikipedia, the free encyclopedia
The Arias Intensity (IA) is a measure of the strength of a ground motion. It determines the intensity of shaking by measuring the acceleration of transient seismic ...
en.wikipedia.org/wiki/Arias_Intensity
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Arias Intensity attenuation - PEER - University of California, Berkeley
EMPIRICAL ATTENUATION RELATIONSHIP FOR Arias Intensity ... Arias Intensity is a ground motion parameter that captures the potential destructiveness  ...
peer.berkeley.edu/research/peertestbeds/Cct/Bray%2024%20May%202002%20Arias%20Intensity%20Attenuation.pdf
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Assessment of Arias Intensity of historical earthquakes using ...
Dec 2, 2011 ... for the direct assessment of Arias Intensity corresponding to a historic ... as Arias Intensity (Ia) for the majority of strong earthquakes that occur ...
www.nat-hazards-earth-syst-sci.net/11/3097/2011/nhess-11-3097-2011.pdf
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Notes on Ground Motion Parameters
Arias Intensity is thus independent of the method used to define strong motion duration. Arias Intensity is sometimes shown as a function of time during.
webshaker.ucsd.edu/homework/Ground_motion_parameters__Course_notes.pdf
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Probabilistic PGA and Arias Intensity maps of Kyrgyzstan ... - Springer
Key words: Arias Intensity, attenuation, Kyrgyzstan, probabilistic PGA maps, seismicity, ... New probabilistic seismic hazard and Arias Intensity maps have been ...
link.springer.com/content/pdf/10.1023/A:1023559932255.pdf
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A preliminary probabilistic seismic hazard ... - ResearchGate
A preliminary probabilistic seismic hazard assessment in terms of Arias Intensity is presented for the first time in southeastern Spain. In the calculation, the ...
www.researchgate.net/publication/222548219_A_preliminary_probabilistic_seismic_hazard_assessment_in_terms_of_Arias_intensity_in_southeastern_Spain/file/50463515a9373d1726.pdf
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Regional Arias Intensity Attenuation Relationship for Taiwan ...
Regional Arias Intensity Attenuation Relationship for Taiwan Considering VS30 by Chyi-Tyi Lee, Bow-Shan Hsieh, Chih-Hsuan Sung, and Po-Shen Lin. Abstract  ...
gis.geo.ncu.edu.tw/papers/Regional%20Arias%20intensity%20attenuation%20relationship%20for%20Taiwan.pdf
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Numerical and Comparative Study of Earthquake Intensity Indices in ...
2005; Sucuoglu and Nurtug 1995; Arias 1970; Trifunac and Brady 1975) have, from their own perspective, proposed various intensity indices. However due to ...
macha.itc.griffith.edu.au/dspace/bitstream/handle/10072/42218/73244_1.pdf?sequence=1
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Empirical attenuation relationship for Arias Intensity - Wiley Online ...
Arias Intensity is a ground motion parameter that captures the potential ... pirical relationship is developed to estimate Arias Intensity as a function of magnitude, ...
onlinelibrary.wiley.com/doi/10.1002/eqe.270/pdf
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Abstract - Bulletin of the Seismological Society of America
Abstract. The Arias Intensity is a measure of earthquake intensity arrived at through the integration of a square of the acceleration time history. It has been ...
www.bssaonline.org/content/102/1/129.abstract
Search results for "Arias Intensity"
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Arias Intensity in science
Predictive equations to estimate Arias Intensity and cumulative ...
Jul 18, 2013 ... University of Brighton ... Predictive equations to estimate Arias Intensity and cumulative absolute velocity as a function of Housner Intensity.
[PDF]Arias Intensity attenuation - PEER - University of California, Berkeley
EMPIRICAL ATTENUATION RELATIONSHIP FOR Arias Intensity ... Arias Intensity is a ground motion parameter that captures the potential destructiveness  ...
[PDF]Probabilistic PGA and Arias Intensity maps of Kyrgyzstan ... - Springer
1Kyrgyz Institute of Seismology, Bishkek, Kyrgyzstan; 2LGIH, University of Liege, Liege, ... New probabilistic seismic hazard and Arias Intensity maps have been ...
Arias Intensity - Wikipedia, the free encyclopedia
The Arias Intensity (IA) is a measure of the strength of a ground motion. ... Faculty of Geo-Information Science and Earth Observation of the University of Twente.
[PDF]Derivation of Attenuation Relations of Arias Intensity Using the Chi ...
For each site class, the attenuation relation of Arias Intensity is derived using a ... 3 Dean, Ching Yun University, Jung-Li, Taiwan, Email: ytyeh@mail.cyu.edu.tw ...
[PDF]Assessment of Arias Intensity of historical earthquakes using ...
Dec 2, 2011 ... University of Patras, Seismological Lab, RIO 265 04, Greece. Received: ... as Arias Intensity (Ia) for the majority of strong earthquakes that occur ...
[PDF]View - Griffith University
Department of Civil Engineering, Tsinghua University, Beijing 100084, China .... where IA is called Arias Intensity, ξ is the damping ratio of a structure, g is the ...
[PDF]A Closer Look at Arias Intensity-based Liquefaction Evaluation ...
Virginia Polytechnic Institute and State University, Blacksburg, VA, USA. ... proposed using Arias Intensity to quantify the capacity and demand of the soil and.
Arias Intensity Assessment of Liquefaction Test Sites on the East ...
Oct 17, 1989 ... 2University Distinguished Professor of Civil Engineering, Virginia Tech, ... Arias intensities, integrated from the strong motion records ranged ...
How to calculate input energy of an earthquake? - ResearchGate
Feb 21, 2013 ... Anca Lungu · City University London ... One simple way to look into the total energy released is by calculating Arias Intensity. Feb 21, 2013.
Books on the term Arias Intensity
Paleoseismology
Paleoseismology
James P. McCalpin, 2009
A measure of shaking intensity developed by Arias (1970) is useful in seismic hazard analysis and correlates well with distributions of earthquake‐induced landslides (Harp and Wilson, 1995; Jibson et al., 2000). Arias Intensity is the integral ...
Grove Book of Operas
Grove Book of Operas
Stanley Sadie and Laura Macy, 2009
The cover blurb calls The New Grove Book of Operas, "The world's definitive single volume of opera reference," and for once the hype is right on the money. The plot synopses are well done, with musical notes and historic background, some nice illustrations, and three very useful appendices: a fine and complete glossary; an index of r...
Slope Stability in Surface Mining
Slope Stability in Surface Mining
W. A. Hustrulid, M. Kim McCarter, Dirk J. A. Van Zyl, 2000
For each accelerogram, the authors computed the Arias Intensity (see Eq. 10.7, below) and conducted a rigorous Newmark analysis for several values of critical acceleration. The results were fit using a regression equation relating Newmark ...
The Last Slice of Space Chronicles: Lark Arias
The Last Slice of Space Chronicles: Lark Arias
Serena Sum Yee Yung, 2013
Serena Yung has lived in various places throughout her life, Hong Kong, Toronto, and now Montreal, and currently studies psychology and English literature at McGill University. Apart from writing and reading, her favorite pastimes are drawing, singing, dancing, and learning about science and philosophy.
Geotechnical Earthquake Engineering
Geotechnical Earthquake Engineering
Ikuo Towhata, 2008
Housner's spectrum intensity (SI in Sect. 23.2; Housner, 1961) stands for the magnitude of relative velocity between the base and the top mass of this model and designates the extent of distortion and damage. Arias (1970) stated that the ...
Hallelujah Junction: Composing an American Life
Hallelujah Junction: Composing an American Life
John Adams, 2009
Starred Review. Best known for his groundbreaking musical works Nixon in China and The Death of Klinghoffer, Adams helped shape the landscape of contemporary classical music. Combining the narrative power of opera, the atonal themes of 20th-century classical music, the spooky modulations of jazz and the complex rhythms of the Beatles and the Band, ...
U.S. Geological Survey Professional Paper
U.S. Geological Survey Professional Paper
1985
By definition, the Arias Intensity is proportional to the integral of the acceleration squared over the time (Arias, 1970), which is equal to A^T/, so, I0« A^Jda(M0^ JvV'3 = M0M and so, log Ia oc 2/3 M0 5. By definition, the moment magnitude is ...
Mario Lanza: An American Tragedy (Great Voices 7)
Mario Lanza: An American Tragedy (Great Voices 7)
Armando Cesari, 2004
In this newest addition to Bakersville's Great Voices series, Cesari makes the convincing argument that Philadelphia-born Lanza, while one of America's greatest operatic singers, could also have been one of the world's great opera singers, carrying the torch passed on by Enrico Caruso. For Cesari, an Italian-born singer now living in...
Characteristics, Timing, and Hazard Potential of ...
Characteristics, Timing, and Hazard Potential of ...
Michael D. Hylland, Mike Lowe, 1998
Newmark displacement can be estimated from the following empirical equation relating displacement, critical acceleration, and Arias Intensity (Jibson, 1993; Jibson and Keefer, 1993): log DN = 1.460 log Ia - 6.642ac + 1.546 (2) where DN is ...
Earthquake Engineering: From Engineering Seismology to Performance-Based Engineering
Earthquake Engineering: From Engineering Seismology to Performance-Based Engineering
Yousef Bozorgnia and Vitelmo V. Bertero, 2004
This multi-contributor book provides comprehensive coverage of earthquake engineering problems, an overview of traditional methods, and the scientific background on recent developments. It discusses computer methods on structural analysis and provides access to the recent design methodologies and serves as a reference for both professionals and res...
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Blog posts on the term
Arias Intensity
Monterey Opera presents “Arias in Autumn 2013″ | Peninsula Reviews
Malin Fritz, Christopher Bengochea, Susan Gundunas & Peter Tuff Monterey Opera gave us a whale of a show last night at the Golden State Theater in
www.peninsulareviews.com/2013/10/13/monterey-opera-presents-arias-in-autumn-2013/
Abstract - Probabilistic seismic hazard assessment in Greece – Part 1
www.nat-hazards-earth-syst-sci.net/10/25/2010/
The real electromagnetic emissions danger | Fazal Majid's low intensity weblog
Posted on 2013-12-26 by majid.
majid.info/blog/the-real-electromagnetic-emissions-danger/
Geotechnical Earthquake Engineering Course, IIT Bombay Civil Engineering Video Tutorials, Deepankar Choudhury
Geotechnical Earthquake Engineering Video Lectures, IIT Bombay Online Course, free tutorials and lecture notes, free download, Educational Lecture Videos
freevideolectures.com/Course/3278/Geotechnical-Earthquake-Engineering
Opera Today : Rivals—Arias for Farinelli & Co.
www.operatoday.com/content/2013/08/rivalsarias_for.php
Aria awards ceremony 2013: as it happened | Music | theguardian.com
It's the night when the biggest names in Australian music get gonged. We'll be watching it on TV and live from the black carpet. Join us and share your thoughts Flume sweeps Arias in triumph for 'people…
www.theguardian.com/music/2013/dec/01/aria-awards-ceremony-2013-watch-with-us-live
Jodi Arias Confesses ‘I Don’t Know If I’ll Appeal’ Conviction As Lifetime TV Movie Stirs Controversy | Radar Online
Jodi Arias tweeted up a storm Saturday night just as the TV movie about her case aired but the convicted murderer never mentioned the Lifetime flick. Instead, she wanted her followers to know she is not currently accepting donations for appeals because, she wrote, "Just don't know yet if I will p...
radaronline.com/exclusives/2013/06/jodi-arias-jodi-arias-dirty-little-secret-tania-raymonde-appeal-murder-lifetime-celebrity-justice/
Spellbinding Commitment – A Tribute to Lorraine Hunt Lieberson | LietoFineLondon
Review: Queens, Heroines and Ladykillers (The Barbican, Monday 3 June 2013) Anna Stéphany (Mezzo-soprano) Renata Pokupić (Mezzo-soprano) Karine Deshayes (Mezzo-soprano) The Orchestra of the Age of the Enlightenment William Christie (Director) Alex Ross – in his article on Lorraine Hunt Lieberson – wrote that the mezzo was “the most remarkable” singer he had ever heard.…
lietofinelondon.wordpress.com/2013/06/04/spellbinding-commitment-a-tribute-to-lorraine-hunt-lieberson/
Jodi Arias’ Lifetime Movie Reviews — ‘Dirty Little Secret’ A Fun Melodrama - Hollywood Life
Lifetime has given us a biographical TV movie to hold us over as we wait for a new jury to be selected so that Jodi Arias' trial can continue.
hollywoodlife.com/2013/06/23/jodi-arias-lifetime-movie-reviews-dirty-little-secret/
Model Validations and Comparisons of the Next Generation Attenuation of Ground Motions (NGA–West) Project
www.bssaonline.org/content/101/1/160.abstract
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