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Ahar-Varzaghan earthquake 2012

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Journal Article

Test of Goodness of the NGA Ground‐Motion Equations to Predict the Strong Motions of the 2012 Ahar–Varzaghan Dual Earthquakes in Northwestern Iran

Mehdi Mousavi, Hamid Zafarani, Sahar Rahpeyma, Alireza Azarbakht
Published: 05 August 2014
Bulletin of the Seismological Society of America (2014) 104 (5): 2512-2528.
DOI: https://doi.org/10.1785/0120130302
... and 1400  m/s, recorded during the 2012 Ahar–Varzaghan dual earthquakes (Mw1 6.4, Mw2 6.3) were taken into account to examine the predictive capabilities of the Next Generation Attenuation (NGA) ground‐motion prediction equations (GMPEs) via a set of comparative analyses and tests. The first‐applied method...
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Journal Article

Stochastic Simulation of Strong‐Motion Records from the 2012 Ahar–Varzaghan Dual Earthquakes, Northwest of Iran

Hamid Zafarani, Mohammad Rahimi, Assadollah Noorzad, Behzad Hassani, Babak Khazaei
Published: 19 May 2015
Bulletin of the Seismological Society of America (2015) 105 (3): 1419-1434.
DOI: https://doi.org/10.1785/0120140241
... from the 2012 Ahar–Varzaghan dual earthquakes in northwest Iran and their aftershocks. Also, the modified finite‐fault method, which is able to model nonuniform stress distribution on the fault plane, is employed to investigate the coseismic stress parameter for the first and second Ahar–Varzaghan dual...
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V S 30 –distance distribution of recordings from the <b>2012</b> <b>Ahar</b>–<b>Varzaghan</b> ...

V S 30 –distance distribution of recordings from the 2012 Ahar–Varzaghan ...

Published: 05 August 2014
Figure 2. V S 30 –distance distribution of recordings from the 2012 Ahar–Varzaghan dual earthquakes data.
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Comparison of median prediction from the event‐specific GMPE with the spe...

Comparison of median prediction from the event‐specific GMPE with the spe...

Published: 05 August 2014
Figure 3. Comparison of median prediction from the event‐specific GMPE with the spectral accelerations from the 2012 Ahar–Varzaghan earthquake versus R rup for (a)  PGA , (b)  T =0.5  s, (c)  T =1.0  s, and (d)  T =2.0  s.
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Focal mechanisms, epicenter locations (stars), and strong‐motion stations u...

Focal mechanisms, epicenter locations (stars), and strong‐motion stations u...

Published: 05 August 2014
Figure 1. Focal mechanisms, epicenter locations (stars), and strong‐motion stations used in the current study (triangles) within 200 km of the rupture plane for the 2012 Ahar–Varzaghan dual earthquakes. Strong‐motion stations that recorded the 1997 Ardebil earthquake are also shown by square
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Simulation and Inversion Input Parameters for <b>Ahar</b>–<b>Varzaghan</b> Dual <b>Earthquak</b>...

Simulation and Inversion Input Parameters for Ahar–Varzaghan Dual Earthquak...

Published: 19 May 2015
Table 3 Simulation and Inversion Input Parameters for Ahar–Varzaghan Dual Earthquakes Obtained in the Current Study or Adopted from Other Sources Parameter Ahar–Varzaghan 1 Ahar–Varzaghan 2 Fault orientation (strike, dip, rake) (Global Centroid Moment Tensor [CMT] catalog) 84
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Simulation and Inversion Input Parameters for <b>Ahar</b>–<b>Varzaghan</b> Dual <b>Earthquak</b>...

Simulation and Inversion Input Parameters for Ahar–Varzaghan Dual Earthquak...

Published: 19 May 2015
Table 3 Simulation and Inversion Input Parameters for Ahar–Varzaghan Dual Earthquakes Obtained in the Current Study or Adopted from Other Sources Parameter Ahar–Varzaghan 1 Ahar–Varzaghan 2 Fault orientation (strike, dip, rake) (Global Centroid Moment Tensor [CMT] catalog) 84
Journal Article

The Ahar‐Varzeghan Earthquake Doublet ( M w  6.4 and 6.2) of 11 August 2012: Regional Seismic Moment Tensors and a Seismotectonic Interpretation

Stefanie Donner, Abdolreza Ghods, Frank Krüger, Dirk Rößler, Angela Landgraf, Paolo Ballato
Published: 10 February 2015
Bulletin of the Seismological Society of America (2015) 105 (2A): 791-807.
DOI: https://doi.org/10.1785/0120140042
... (Alborz mountains, Iran) revealed from regional moment tensors , J. Seismol. 17 , 925 – 959 . Faridi M. Sartibi A. ( 2012 ). Report of the Ahar Varzaghan earthquake on 11 August 2012 , Technical report, Geological Survey of Iran, 27  pp. Ghods A. Sobouti F. ( 2005...
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Journal Article

Quick Estimation of the Magnitude and Epicentral Distance Using the P Wave for Earthquakes in Iran

Reza Heidari
Published: 29 December 2015
Bulletin of the Seismological Society of America (2015) 106 (1): 225-231.
DOI: https://doi.org/10.1785/0120150090
... 59.00 6.2 Ahar 2012/08/11 12:23:15 38.55 46.87 6.4 — 2012/08/11 12:30:32 38.41 46.78 5.0 Varzaghan 2012/08/11 12:34:34 38.45 46.75 6.2 — 2012/08/11 12:44:38 38.44 46.70 4.0 — 2012/08/11 12:49:15 38.39 46.69 4.6 — 2012/08/11 13:14:05 38.40 46.65 4.4...
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Journal Article

Measuring the Performance of Ground‐Motion Models: The Importance of Being Independent

Sum Mak, Fabrice Cotton, Danijel Schorlemmer
Published: 02 August 2017
Seismological Research Letters (2017) 88 (5): 1212-1217.
DOI: https://doi.org/10.1785/0220170097
.... Rahpeyma S. , and Azarbakht A. 2014 . Test of goodness of the NGA ground‐motion equations to predict the strong motions of the 2012 Ahar‐Varzaghan dual earthquakes in northwestern Iran , Bull. Seismol. Soc. Am. 104 , no.  5 , 2512 – 2528 , doi: 10.1785/0120130302 . Nishimura...
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Journal Article

Empirical Evaluation of Hierarchical Ground‐Motion Models: Score Uncertainty and Model Weighting

Sum Mak, Robert Alan Clements, Danijel Schorlemmer
Published: 21 February 2017
Bulletin of the Seismological Society of America (2017) 107 (2): 949-965.
DOI: https://doi.org/10.1785/0120160232
.... , and Azarbakht A. 2014 . Test of goodness of the NGA ground‐motion equations to predict the strong motions of the 2012 Ahar‐Varzaghan dual earthquakes in northwestern Iran , Bull. Seismol. Soc. Am. 104 , no.  5 , 2512 – 2528 , doi: 10.1785/0120130302 . Musson R. 2012...
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Journal Article

A Predictive Equation for Vertical‐to‐Horizontal Response Spectral Ratios in Northern Iran

M. R. Soghrat, M. Ziyaeifar
Published: 12 January 2016
Bulletin of the Seismological Society of America (2016) 106 (1): 123-140.
DOI: https://doi.org/10.1785/0120150227
... analysis in the Zagros region, Iran , J. Earthq. Eng. 16 , 1184–1207 . Mousavi M. Zafarani H. Rahpeyma S. Azarbakht A. ( 2014 ). Test of goodness of the NGA ground‐motion equations to predict the strong motions of the 2012 Ahar–Varzaghan dual earthquakes in northwestern Iran...
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Journal Article

Testing Ground‐Motion Prediction Equations against Small‐to‐Moderate Magnitude Data in Iran

H. Zafarani, A. Farhadi
Published: 24 January 2017
Bulletin of the Seismological Society of America (2017) 107 (2): 912-933.
DOI: https://doi.org/10.1785/0120160046
... A. 2014 . Test of goodness of the NGA ground‐motion equations to predict the strong motions of the 2012 Ahar–Varzaghan dual earthquakes in northwestern Iran , Bull. Seismol. Soc. Am. 104 , no.  5 , 2512 – 2528 . Nash J. E. , and Sutcliffe J. V. 1970 . River flow forecasting...
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Journal Article

Model Selection for Correlating V S 30 with Average Shear‐Wave Velocities at Lower Depths Based on the Iranian Data

Amir Hossein Shafiee, Hamid Zafarani, Mojtaba Jahanandish
Published: 12 January 2016
Bulletin of the Seismological Society of America (2016) 106 (1): 289-299.
DOI: https://doi.org/10.1785/0120150257
... of the NGA ground‐motion equations to predict the strong motions of the 2012 Ahar–Varzaghan dual earthquakes in northwestern Iran , Bull. Seismol. Soc. Am. 104 , 2512–2528 . Scherbaum F. Cotton F. Smit P. ( 2004 ). On the use of response spectral‐reference data for the selection...
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Journal Article

Comprehensive Comparison among the Campbell–Bozorgnia NGA‐West2 GMPE and Three GMPEs from Europe and the Middle East

Kenneth W. Campbell
Published: 26 July 2016
Bulletin of the Seismological Society of America (2016) 106 (5): 2081-2103.
DOI: https://doi.org/10.1785/0120160024
... motions of the 2012 Ahar‐Varzaghan dual earthquakes in northwestern Iran , Bull. Seismol. Soc. Am. 104 , 2512–2528 . Peruš I. Fajfar P. ( 2010 ). Ground‐motion prediction by a non‐parametric approach , Earthq. Eng. Struct. Dyn. 39 , 1395–1416 . Petersen M. D. Moschetti...
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