Crustal Stresses and Seismodynamic Characteristics in the Upper Crust

DOI: 10.4236/ojer.2014.34014   PDF   HTML   XML   3,014 Downloads   3,509 Views   Citations


In this paper an approach to estimate near-surface seismodynamic features by using distance- amplitude reduction with geotectonic characteristics of the upper crust in the Eastern Anatolia is discussed. The data set used in this study consists of 287 regional earthquakes in the magnitude range of 3.0 - 6.1, epicentral distances between 15 km and 202 km and their focal depths reaching up to 13 km. The entire study area is divided into three tectonic blocks according to the distribu-tions of the earthquakes and the location of the fault segment. The estimated quality factor QP-S  values for the three regions ranged from 28.6 to 65, highlighting the regional differences in the seismodynamics of the crust. In Eastern Anatolia, the relatively low average quality factor values (QP: 37, QS: 55) show average (0.217) and average values ( P: 0.0166, S: 0.017). The lowest Q/QP  value 1.39 and the highest VP /VS  value 1.65 are found at the Mus station. The highest Poisson’s ratio   and lowest absorption coefficient   were found in the Mus area. The variation in Q ,   and  indicates that the northern part (Erc and Kem region) of East Anatolia appears to be more active and heterogeneous compared with the southern part (Mus region) of East Anatolia.

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Aydın, U. (2014) Crustal Stresses and Seismodynamic Characteristics in the Upper Crust. Open Journal of Earthquake Research, 3, 143-151. doi: 10.4236/ojer.2014.34014.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Toks?z, M.N. and Johnson, D.H. (1981) Seismic Wave Attenuation. Society of Exploration Geophysicist.
[2] Jeng, Y., Tsai, J. and Chen, S. (1999) An Improved Method of Determining Near-Surface Q. Geophysics, 64, 1608- 1617.
[3] Xia, J., Miller, R.D., Park, C.B. and Tian, G. (2002) Determining Q of Near-Surface Materials from Rayleigh Waves. Journal of Applied Geophysics, 51, 121-129.
[4] Johnston, D.H. and Toks?z, M.N. (1981) Definitions and Terminology. In: Toks?z, M.N. and Johnston, D.H., Eds., Seismic Wave Attenuation, 1-5.
[5] Mitchell, B.J. (1995) An Elastic Structure and Evolution of the Continental Crust and Upper Mantle from Seismic Surface Wave Attenuation. Reviews of Geophysics, 33, 441-462.
[6] Lai, C.G. and Rix, G.J. (1998) Simultaneous Inversion of Rayleigh Phase Velocity and Attenuation for Near-Surface Site Characterization. Report No. GIT-CEE/GEO-98-2. School of Civil and Environmental Engineering, Georgia Institute of Technology.
[7] Rix, G.J., Lai, C.D. and Spang Jr., A.W. (2000) In Situ Measurement of Damping Ratio Using Surface Waves. Journal of Geotechnical and Geoenvironmental Engineering, 126, 472-480. Anatolia, Turkey, Soil Dynamics and Earthquake Engineering, 31, 1192-1195.
[8] Kramer, S.L. (1996) Geotechnical Earthquake Engineering. Prentice Hall, Upper Saddle River.
[9] Johnston, D.H., Toksoz, M.N. and Timur, A. (1979) Attenuation of Seismic Waves in Dry and Saturated Rocks: I. Mechanics in Geophysics, 44, 691-711.
[10] Aki, K. (1985) Theory of Earthquake Prediction with Special Reference to Monitoring of the Quality Factor of Lithosphere by the Coda Method. Journal of Earthquake Predict Research, 3, 219-230.
[11] Sheriff, R.E. (1991) Encyclopaedia Dictionary of Exploration Geophysics. Society of Exploration Geophysicists, Tulsa.
[12] Toks?z, M.N., Cheng, C.H. and Timur, A. (1976) Velocities of Seismic Waves in Porous Rocks. Geophysics, 41, 621- 645.
[13] Tatman, R.H. (1982) VP/VS and Lithology. Geophysics, 47, 336-334.
[14] Christensen, N.I. (1996) Poisson’s Ratio and Crustal Seismology. Journal of Geophysical Research, 101, 3139-3156.
[15] Zhao, D., Tani, H. and Mishra, O.P. (2004) Crustal Heterogeneity in the 2000 Western Tottori Earthquake Region: Effect of Fluids from Slab Dehydration. Physics of the Earth and Planetary Interiors, 145, 161-177.
[16] Nur, A. and Simmons, G. (1969) Stress-Induced Velocity Anisotropy in Rocks: An Experimental Study. Journal of Geophysical Research, 74, 6667-6674.
[17] Seng?r, A.M.C. and Yilmaz, Y. (1981) Tethyan Evaluation of Turkey: A Plate Tectonic Approach. Tectonophysics, 75, 181-190, 193-199, 203-241.
[18] ?eng?r, A.M.C., G?rür, N. and Saroglu, F. (1985) Strike-Slip Faulting and Related Basin Formation in Zones of Tectonic Escape: Turkey as a Case Study. In: Biddle, K.T. and Christie-Blick, N., Eds., Strike-Slip Deformation, Basin Formation and Sedimentation, Vol. 37, Society of Economic Paleontologists and Mineralogists Special Publication, 227-264.
[19] Jolivet, L., Daniel, J.M., Truffert, C. and Goffe, B. (1994) Exhumation of Deep Crustal Metamorphic Rocks and Crustal Extension in Back-Arc Regions. Lithos, 33, 3-30.
[20] Jolivet, L. and Patriat, M. (1999) Ductile Extension and the Formation of the Aegean Sea. In: Durand, B., Jolivet, L., Horvath, F. and Seranne, M., Eds., The Mediterranean Basins: Tertiary Extension within the Alphine Oragen, Vol. 156, Geological Society, Special Publications, London, 427-456.
[21] Dhondt, D. and Chorowicz, J. (2006) Review of the Neotectonics of the Eastern Turkish—Armenian Plateau by Geomorphic Analysis of Digital Elevation Model Imagery. International Journal of Earth Sciences, 95, 34-49.
[22] ?eng?r, A. and Kidd, W. (1979) Post-Collisional Tectonics of the Turkish-Iranian Plateau and a Comparison with Tibet. Tectonophysics, 55, 361-376.
[23] Morozov, I.B. (2009) Seismological Attenuation Coefficient and the Origins of Apparent Q(f). University of Saskatchewan, Saskatoon, 32.
[24] Aki, K. and Richards, P.G. (1980) Quantitative Seismology: Theory and Methods. Vol. 1, W. H. Freeman and Co., London.
[25] Morozov, I.B., Morozova, E.A., Smithson, S.B. and Solodilov, L.N. (1998) On the Nature of the Teleseismic Pn Phase Observed on the Ultralong-Range Profile “Quartz,” Russia. Bulletin of the Seismological Society of America, 88, 62- 73.
[26] Knopoff, L. (1964) Q. Reviews of Geophysics, 2, 625-660.
[27] Chernov, L.A. (1960) Wave Propagation in a Random Medium. McGraw-Hill, New York, 35-57, 168 p.
[28] Mitchell, B.J. (1995) Anelastic Structure and Evolution of the Continental Crust and Upper Mantle from Seismic Surface Wave Attenuation. Reviews of Geophysics, 33, 441-462.
[29] Mitchell, B.J. (1975) Regional Rayleigh Wave Attenuation in North America. Journal of Geophysical Research, 80, 4904-4916. Mak, S., Chan, L.S., Chandler, A.M. and Koo, R.C.H. (2004) Coda Q Estimates in the Hong Kong Region. Journal of Asian Earth Science, 24, 127-136.
[30] Singh, S.K. and Herrmann, R.B. (1983) Regionalization of Crustal Coda Q in the Continental United States. Journal of Geophysical Research, 88, 527-538.
[31] Jin, A. and Aki, K. (1980) Spatial and Temporal Correlation between Coda Q and Seismicity in China. Bulletin of the Seismological Society of America, 78, 741-769.
[32] Utsa, T. (1984) Estimation of Parameters for Recurrence Models of Earthquakes. Bulletin of the Earthquake Research Institute, The University of Tokyo, 59, 53-66.
[33] Herrmann, R.B. (1980) Q Estimation Using the Coda of Local Earthquakes. Bulletin of the Seismological Society of America, 70, 447-468.
[34] Roecker, S.W., Tuckel, B., King, J. and Hatzfeld, D. (1982) Estimations of Q in Central Asia as a Function of Frequency and Depth Using the Coda of Locally Recorder Earthquakes. Bulletin of the Seismological Society of America, 72, 129-149.
[35] Reha, S. (1984) Q Determination from Local Earthquakes in South Carolina Plain. Bulletin of the Seismological Society of America, 74, 2257-2268.
[36] Ak?nc?, A., Taktak, G. and Ergintav, S. (1994) Attenuation of Coda Waves in the Western Anatolia. Physics of the Earth and Planetary Interiors, 87, 155-165.
[37] Ak?nc?, A. and Eyido?an, H. (1996) Frequency-Dependent Attenuation of S and Coda Waves in Erzincan Region (Turkey). Physics of the Earth and Planetary Interiors, 97, 109-119.
[38] Anderson, D.L. and Given, J.W. (1982) Absorption Band Q Model for the Earth. Journal of Geophysical Research, 87, 3893-3904.
[39] Vassiliou, M., Salvado, C.A. and Tittmann, B.R. (1982) Seismic Attenuation. In: Carmichael, R.S., Ed., CRC Handbook of Physical Properties of Rocks, Vol. 3, CRC Press, Boca Raton.
[40] Jin, A. and Aki, K. (1988) Spatial and Temporal Correlation between Coda Q and Seismicity in China. Bulletin of the Seismological Society of America, 78, 741-769.
[41] Ricker, N. (1953) The Form and Laws of Propagation of Seismic Wavelets. Geophysics, 18, 10-40.
[42] Futterman, W.I. (1962) Dispersive Body Waves. Journal of Geophysical Research, 67, 5279-5291.
[43] White, J.E. (1983) Underground Sound, Application of Seismic Waves. Elsevier Science Publishing Company Inc, Amsterdam, 83-137.
[44] Kneib, G. and Shapiro, S.A. (1995) Viscoacoustic Wave Propagation in 2-D Random Media and Separation of Absorption and Scattering Attenuation. Geophysics, 60, 459-467.
[45] Ayd?n, U. and Kadirov, A. (2007) Attenuatin in Eastern Anatolia. ?stanbul üniversitesi Mühendislik Fakültesi, Yerbilimleri Dergisi, C., 20, S,1, s. 35-41.
[46] Ayd?n, U., Acar, A. and Din?er, I. (2006) Estimation of Seismic Wave Absorption Rates near Area Earthquakes in East Anatolia Erzurum ?entre. ?ukurova üniversitesi Fenve Mühendislik Bilimleri Dergisi. C., 15, S. 1, s. 86-96.
[47] Ayd?n, U. and Sahin, S. (2011) Comparison of the Attenuation Properties for Two Different Areas in Eastern Anatolia, Turkey. Soil Dynamics and Earthquake Engineering, 31, 1192-1195.
[48] ?ahin, ?. and Ayd?n, U. (2011) Do?u Anadolu’da yüksek frekansl? dalga yay?n?m?. The High Frequency Wave Propagation in East Anatolia, Uluslararas??lmi Pratik Kongresi, Bakü.

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