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Abstract

This manuscript reports ground motion intensity measure (IM) correlations for a number of IM types, as measured from the NGA-West2 database. IMs considered are Spectral Accelerations with periods from 0.01 s to 10 s, Peak Ground Acceleration, Peak Ground Velocity, and Significant Duration (for 5–75% and 5–95% definitions). Results are shown for correlations of both maximum-direction and geometric mean spectral acceleration values, given the need for such maximum-direction correlations in a new ASCE 7-16 procedure. Additionally, the potential magnitude-, distance- and site-condition-dependence of IM correlations are evaluated. The results are practically important as IM correlations are increasingly used in a range of engineering and seismic hazard calculations. We find that maximum-direction spectral correlations are comparable to correlations for other spectral acceleration definitions, and that the correlations have no practically significant dependence on magnitude, distance or site conditions. These results support the collective understanding that IM correlations are stable across a range of conditions, and as a result, that existing correlation models are generally appropriate for continued use in engineering calculations.

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References

Abrahamson

N. A.

Silva

W. J.

and Kamai

2014. Summary of the ASK14 ground motion relation for active crustal regions, Earthquake Spectra 30, 1025–1055.

Afshari

and Stewart

J. P.

2016. Physically parameterized prediction equations for significant duration in active crustal regions, Earthquake Spectra 32, 2057–2081.

Akkar

Sandikkaya

M. A.

and Ay

B. Ö.

2014. Compatible ground-motion prediction equations for damping scaling factors and vertical-to-horizontal spectral amplitude ratios for the broader Europe region, Bull Earthq Eng 12, 517–547.

Al Atik

2011. Correlation of spectral acceleration values for subduction and crustal models, in COSMOS Technical Session, Emeryville, CA.

Al Atik

Abrahamson

Bommer

J. J.

Scherbaum

Cotton

and Kuehn

2010. The variability of ground-motion prediction models and its components, Seismol Res Lett 81, 794–801.

American Society of Civil Engineers (ASCE), 2016. Minimum Design Loads for Buildings and Other Structures, ASCE 7-16, Reston, VA.

Ancheta

T. D.

Darragh

R. B.

Stewart

J. P.

Seyhan

Silva

W. J.

Chiou

B. S.-J.

Wooddell

K. E.

Graves

R. W.

Kottke

A. R.

Boore

D. M.

Kishida

and Donahue

J. L.

2014. NGA-West2 database, Earthquake Spectra 30, 989–1005.

Azarbakht

Mousavi

Nourizadeh

and Shahri

2014. Dependence of correlations between spectral accelerations at multiple periods on magnitude and distance, Earthq Eng Struct Dyn 43, 1193–1204.

Baker

J. W.

and Cornell

C. A.

2005. A vector-valued ground motion intensity measure consisting of spectral acceleration and epsilon, Earthq Eng Struct Dyn 34, 1193–1217.

10.

Baker

J. W.

and Jayaram

2008. Correlation of spectral acceleration values from NGA ground motion models, Earthquake Spectra 24, 299–317.

11.

Boore

D. M.

2010. Orientation-independent, nongeometric-mean measures of seismic intensity from two horizontal components of motion, Bull Seismol Soc Am 100, 1830–1835.

12.

Boore

D. M.

Stewart

J. P.

Seyhan

and Atkinson

G. M.

2014. NGA-West2 equations for predicting PGA, PGV, and 5% damped PSA for shallow crustal earthquakes, Earthquake Spectra 30, 1057–1085.

13.

Bradley

B. A.

2010. A generalized conditional intensity measure approach and holistic ground-motion selection, Earthq Eng Struct Dyn 39, 1321–1342.

14.

Bradley

B. A.

2011a. Correlation of significant duration with amplitude and cumulative intensity measures and its use in ground motion selection, J Earthq Eng 15, 809–832.

15.

Bradley

B. A.

2011b. Empirical correlation of PGA, spectral accelerations and spectrum intensities from active shallow crustal earthquakes, Earthq Eng Struct Dyn 40, 1707–1721.

16.

Bradley

B. A.

2012. Empirical correlations between peak ground velocity and spectrum-based intensity measures, Earthq Spectra 28, 17–35.

17.

Campbell

K. W.

and Bozorgnia

2014. NGA-West2 ground motion model for the average horizontal components of PGA, PGV, and 5% damped linear acceleration response spectra, Earthquake Spectra 30, 1087–1115.

18.

Carlton

and Abrahamson

2014. Issues and approaches for implementing conditional mean spectra in practice, Bull Seismol Soc Am 104, 503–512.

19.

Chiou

B. S.-J.

and Youngs

R. R.

2014. Update of the Chiou and Youngs NGA model for the average horizontal component of peak ground motion and response spectra, Earthquake Spectra 30, 1117–1153.

20.

Cimellaro

G. P.

2013. Correlation in spectral accelerations for earthquakes in Europe, Earthq Eng Struct Dyn 42, 623–633.

21.

Goda

and Atkinson

G. M.

2009. Probabilistic characterization of spatially correlated response spectra for earthquakes in Japan, Bull Seismol Soc Am 99, 3003–3020.

22.

Jayaram

and Baker

J. W.

2010. Considering spatial correlation in mixed-effects regression, and impact on ground-motion models, Bull Seismol Soc Am 100, 3295–3303.

23.

and Sun

2006. A quadratically convergent Newton method for computing the nearest correlation matrix, SIAM J Matrix Anal Appl 28, 360–385.

24.

Shahi

S. K.

and Baker

J. W.

2014. NGA-West2 models for ground-motion directionality, Earthquake Spectra 30, 1285–1300.

25.

Zimmerman

R. B.

Baker

J. W.

Hooper

J. D.

Bono

Haselton

C. B.

Engel

Hamburger

R. O.

Celikbas

and Jalalian

2017. Response history analysis for the design of new buildings in the NEHRP Provisions and ASCE/SEI 7 Standard: Part III - example applications illustrating the recommended methodology, Earthquake Spectra, in press, doi: http://dx.doi.org/10.1193/061814EQS087M.

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Intensity Measure Correlations Observed in the NGA-West2 Database,and Dependence of Correlations on Rupture and Site Parameters

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