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Investigation on directional effects of Vrancea subcrustal earthquakes

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Abstract

This paper evaluates possible directional effects from strong ground motions recorded during the last four significant subcrustal earthquakes produced in the Vrancea seismic zone (Romania) in August 1986 (M W = 7.1), May 1990 (M W = 6.9 and 6.4) and October 2004 (M W = 6.0). Several measures of the horizontal component of the ground motion given in the literature (Boore et al., 2006; Boore, 2010) are computed and are related to the geometric mean of the as-recorded horizontal components. ANOVA method is applied in order to quantify the influence of the earthquake magnitude and of the soil class on some strong ground motion parameters (e.g. Arias intensity, PGV/PGA, or mean period T M). The study of the directional effects is performed using the distribution of I JMA and of the rotation angle corresponding to a measure of the horizontal component of the ground motion (RotD100) and the results reveal a visible directional pattern for I JMA, while in the case of RotD100 the directional patterns are less visible.

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References

  • Aki K and Richards PG (2002), Quantitative seismology, Univ. Science Books.

    Google Scholar 

  • Akkar S and Bommer JJ (2006), “Influence of Longperiod Flter Cut-off on Elastic Spectral Displacements,” Earthquake Engineering and Structural Dynamics, 35: 1145–1165.

    Article  Google Scholar 

  • Aldea A, Vacareanu R, Lungu D, Pavel F and Demetriu S (2014), “Probabilistic Seismic Hazard Assessment for Romania. Part II: Sensitivity Analysis,” in Vacareanu R and Ionescu M, ed, Proceedings of the 5th National Conference on Earthquake Engineering and 1st National Conference on Earthquake Engineering and Seismology, Conspress, Bucharest, pp. 221–228.

    Google Scholar 

  • Arias A (1970), “A Measure of Earthquake Intensity,” in Hansen RJ, ed, Seismic Design for Nuclear Power Plants, pp. 438–483, MIT Press, Cambridge, Massachusetts.

    Google Scholar 

  • Beyer K and Bommer JJ (2006), “Relationships between Median Values and between Aleatory Variabilities for Different Definitions of the Horizontal Component of Motion,” Bulletin of the Seismological Society of America, 96(4A): 1512–1522.

    Article  Google Scholar 

  • Bonjer KP, Ionescu C, Sokolov V, Radulian M, Grecu B, Popa M and Popescu E (2008), “Ground Motion Patterns of Intermediate-depth Vrancea Earthquakes: the October 27, 2004 Event,” in Zaicenco A, Craifaleanu I and Paskaleva I, ed, Harmonization of seismic hazard in Vrancea Zone: with Special Emphasis on Seismic Risk Reduction, pp. 47–62, Springer, Dordrecht.

    Google Scholar 

  • Boore DM (2010), “Short Note: Orientationindependent, Nongeometric-mean Measures of Seismic Intensity from Two Horizontal Components of Motion,” Bulletin of the Seismological Society of America, 100(4): 1830–1835.

    Article  Google Scholar 

  • Boore DM and Bommer JJ (2006), “Processing of Strong Motion Accelerograms: Needs, Options and Consequence,” Soil Dynamics and Earthquake Engineering, 25: 93–115.

    Article  Google Scholar 

  • Boore DM, Watson-Lamprey J and Abrahamson NA (2006), “Orientation-independent Measures of Ground Motion,” Bulletin of the Seismological Society of America, 96(4A): 1502–1511.

    Article  Google Scholar 

  • Carbunar OF and Radulian M (2011), “Geometrical Constraints for the Configuration of the Vrancea (Romania) Intermediate-depth Seismicity Nest,” Journal of Seismology, 15: 579–598.

    Article  Google Scholar 

  • Chen L and Faccioli E (2013), “Single-station Standard Deviation Analysis of 2010-2012 Strong-motion Data from the Canterbury Region, New Zealand,” Bulletin of Earthquake Engineering, 11(5): 1617–1632.

    Article  Google Scholar 

  • Douglas J (2011), Ground-motion Prediction Equations 1964-2010, PEER Report 2011/102 Pacific Earthquake Engineering Research Center, College of Engineering, Berkeley, California.

    Google Scholar 

  • Douglas J and Gehl P (2008), “Investigating Strongground Motion Variability Using Analysis of Variance and Two-way-fit Plots,” Bulletin of Earthquake Engineering, 6: 389–405.

    Article  Google Scholar 

  • Enescu D (1980), “Contributions to the Knowledge of the Focal Mechanism of the Vrancea Strong Earthquakes of March 4, 1977,” Revue Roumaine de Géologie, Géophysique et Géographie - Série de Géophysique, 24(1): 3–18.

    Google Scholar 

  • Hurukawa N, Popa M and Radulian M (2008), “Relocation of Large Intermediate-depth Earthquakes in the Vrancea Region, Romania, since 1934 and a Seismic Gap,” Earth Planets Space, 60: 565–572.

    Article  Google Scholar 

  • Ismail-Zadeh A, Matenco L, Radulian M, Cloetingh S and Panza G (2012), “Geodynamics and Intermediatedepth Seismicity in Vrancea (the South-eastern Carpathians): Current State-of-the art,” Tectonophysics, 530–531: 50–79.

    Article  Google Scholar 

  • Ivan M (2007), “Attenuation of P and pP Waves in Vrancea Area–Romania,” Journal of Seismology, 11: 73–85.

    Article  Google Scholar 

  • Ivan IA, Enescu BD and Pantea A (1998), “Input for Seismic Hazard Assessment Using Vrancea Source Region,” Romanian Journal of Physics, 43: 619–636.

    Google Scholar 

  • Kalkan E and Reyes J, (2013), “Significance of Rotating Ground Motions on Behaviour of Symmetric–and Asymmetric-plan Structures: Part 2. Multistory Structures,” Earthquake Spectra (in press) doi: 10.1193/072012EQS242M.

    Google Scholar 

  • Lungu D, Demetriu S, Radu C and Coman O (1994), “Uniform Hazard Response Spectra for Vrnacea Earthquakes in Romania,” in Duma J, ed, Proceedings of the 10th European Conference on Earthquake Engineering, Balkema, Rotterdam, pp 365–370.

    Google Scholar 

  • Oncescu MC (1987), “On the Stress Tensor in Vrancea Region,” Journal of Geophysical Research, 62: 62–65.

    Google Scholar 

  • Oncescu MC and Bonjer KP (1997), “A Note on the Depth Recurrence and Strain Release of Large Vrancea Earthquakes,” Tectonophysics, 272: 291–302.

    Article  Google Scholar 

  • Pavel F, Vacareanu R and Cioflan C (2014), “Directivity Effects of Strong Ground Motions from Vrancea Subcrustal Earthquakes,” Proceedings of the Second European Conference on Earthquake Engineering and Seismology, Istanbul, Turkey, Paper no. 466.

    Google Scholar 

  • Radulian M, Mândrescu N, Popescu E, Utale A and Panza G (2000), “Characterization of Romanian Seismic Zones,” Pure and Applied Geophysics, 157: 57–77.

    Article  Google Scholar 

  • Radulian M, Popa M, Carbunar OF and Rogozea M (2008), “Seismicity Patterns in Vrancea and Predictive Features,” Acta Geodaeticaet Geophysica Hungarica, 43: 163–173.

    Article  Google Scholar 

  • Rathje E, Abrahamson N and Bray J (1998), “Simplified Frequency Content Estimates of Earthquake Ground Motions,” Journal of Geotechnical and Geoenvironmental Engineering, 124(2): 150–159.

    Article  Google Scholar 

  • Reyes J and Kalkan E (2013), “Significance of Rotating Ground Motions on Behaviour of Symmetric–and Ssymmetric-plan Structures: Part I. Singlestory Structures,” Earthquake Spectra (in press) doi: 10.1193/072012EQS241M.

    Google Scholar 

  • Rupakhety R and Sigbjörnsson R (2013), “Rotationinvariant Measures of Earthquake Response Spectra,” Bulletin of Earthquake Engineering, 11(6): 1885–1893.

    Article  Google Scholar 

  • Russo RM, Mocanu V, Radulian M, Popa M and Bonjer KP (2005), “Seismic Attenuation in the Carpathian Bend Zone and Surroundings,” Earth and Planetary Science Letters, 23: 695–709.

    Article  Google Scholar 

  • Shabestari K and Yamazaki F (2001), “A Proposal of Instrumental Seismic Intensity Scale Compatible with MMI Evaluated From Three-component Acceleration Records,” Earthquake Spectra, 17(4): 711–723.

    Article  Google Scholar 

  • Sokolov V, Bonjer KP, Wenzel F, Grecu B and Radulian M (2008), “Ground-motion Prediction Equations for the Intermediate Depth Vrancea (Romania) Earthquakes,” Buletin of Earthquake Engineering, 6(3): 367–388.

    Article  Google Scholar 

  • Vacareanu R, Radulian M, Iancovici M, Pavel F and Neagu C (2015), “Fore-arc and Back-arc Ground Motion Prediction Model for Vrancea Intermediate Depth Seismic Source,” Journal of Earthquake Engineering, 19(3): 535–562.

    Article  Google Scholar 

  • Wald DJ and Allen TI (2007), “Topographic Slope as a Proxy for Seismic Site Conditions and Amplification,” Bulletin of the Seismological Society of America, 97(5): 1379–1395.

    Article  Google Scholar 

  • Wenzel F, Achauer U, Enescu D, Kissling E and Mocanu V (1998), “Detailed Look at Final Stage of Plate Breakoff is Target of Study in Romania,” EOS, Transactions, American Geophysical Union, 79(48): 589–594.

    Article  Google Scholar 

  • http://infp.infp.ro/bigsees/default.htm

  • http://www.globalcmt.org

  • http://www.infp.ro/catalog-seismic/evenimente

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Authors and Affiliations

  1. Seismic Risk Assessment Center, Technical University of Civil Engineering Bucharest, Bucharest, Romania

    Florin Pavel & Radu Vacareanu

  2. National Institute for Earth Physics (INFP), Bucharest-Măgurele, Romania

    Mircea Radulian & Carmen Cioflan

  3. Seismic Risk Assessment Center, Faculty of Civil, Industrial and Agricultural Buildings, Technical University of Civil Engineering Bucharest, Bucharest, Romania

    Florin Pavel

Authors
  1. Florin Pavel
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  2. Radu Vacareanu
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  3. Mircea Radulian
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  4. Carmen Cioflan
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Correspondence to Florin Pavel.

Additional information

Supported by: Romanian Ministry of National Education (MEN) under the Grant Number 72/2012

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Pavel, F., Vacareanu, R., Radulian, M. et al. Investigation on directional effects of Vrancea subcrustal earthquakes. Earthq. Eng. Eng. Vib. 14, 399–410 (2015). https://doi.org/10.1007/s11803-015-0032-3

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  • DOI: https://doi.org/10.1007/s11803-015-0032-3

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