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Spatial Variability of Shear Wave Velocity Using Geostatistical Analysis in Mashhad City, NE Iran

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Shear wave velocity (Vs) is one of the most important parameters of a geological model to assess the site effect and the ground response. In this paper the spatial variability of shear wave velocity in Mashhad capital city are investigated. For this purpose, 243 Vs profiles of different projects throughout the city were used. Based on the Vs profiles the iso-level maps of the Vs interfaces 300, 500, 750, 950 and 1200 m/s were obtained by kriging interpolation method. The best semivariogram models were obtained with changing the effective parameters and assessing the components of the models and spatial dependence. The best models for the entire interfaces were exponential. Based on these models, the spatial dependence of depth data was moderate to strong. The performance of interpolations was checked by cross-validation and its indices i.e. mean standardized prediction errors (MSPR), root mean square prediction errors (RMSPE), average kriging standard error (AKSE), and root mean square standardized prediction errors (RMSSPE) were assessed. A trend of depth increasing towards the northeast was observed at all of the interfaces.
Cite this paper
Ghazi, A. , Moghadas, N. , Sadeghi, H. , Ghafoori, M. and Lashkaripour, G. (2014) Spatial Variability of Shear Wave Velocity Using Geostatistical Analysis in Mashhad City, NE Iran. Open Journal of Geology, 4, 354-363. doi: 10.4236/ojg.2014.48027. 
 

[1] Manakou, M.V., Raptakis, D.G., Chavez-Garci, F.J., Apostolidis, P.I. and Pitilakis, K.D. (2010) 3D Soil Structure of the Mygdonian Basin for Site Response Analysis. Soil Dynamics and Earthquake Engineering, 30, 1198-1211. http://dx.doi.org/10.1016/j.soildyn.2010.04.027
[2] Brocher, T. (2005) A Regional View of Urban Sedimentary Basins in Northern California Based on Oil Industry Compressional-Wave Velocity and Density Logs. Bulletin of the Seismological Society of America, 95, 2093-2114. http://dx.doi.org/10.1785/0120050025
[3] Magistrale, H., Layghlin, M.C. and Day, S. (1996) A Geology Based 3-D Velocity Model of the Los Angeles bAsin Sediments. Bulletin of the Seismological Society of America, 86, 1161-1166.
[4] Semblat, J.F., Khamb, M., Pararaa, E., Bardb, P.Y., Pitilakis, K., Makrad, K. and Raptakis, D. (2005) Seismic Wave Ampli?cation: Basin Geometry vs Soil Layering. Soil Dynamics and Earthquake Engineering, 25, 529-538. http://dx.doi.org/10.1016/j.soildyn.2004.11.003
[5] Rota, M. (2007) Estimating Uncertainty in 3d Models Using Geostatistics. PhD Thesis, European School for Advanced Studies in Reduction of Seismic Risk (Rose School), University of Pavia, Italy.
[6] Chaplot, V., Darboux, F., Bourennane, H., Leguedois, S., Silvera, N. and Phachomphon, K. (2006) Accuracy of Interpolation Techniques for the Derivation of Digital Elevation Models in Relation to Landform Types and Data Density. Geomorphology, 77, 126-141.
http://dx.doi.org/10.1016/j.geomorph.2005.12.010
[7] Isaaks, E.H. and Srivastava, R.M. (1989) An Introduction to Applied Geostatistics. Oxford University Press, Oxford, 561.
[8] Rahman, K.M. (2007) Settlement Prediction on the Basis of a 3D Subsurface Model, Case Study: Reeuwijk Area, the Netherlands. MSc Thesis, International Institute for Geo-Information Science and Earth Observation, Enschede, The Netherlands.
[9] Clark, I. (1979) Practical Geostatistics. Applied Science Publishers Ltd., London, 129.
[10] Al-Mashagbah, A., Al-Adamat, R. and Salameh, E. (2012) The Use of Kriging Techniques with in GIS Environment to Investigate Groundwater Quality in the Amman-Zarqa Basin/Jordan. Research Journal of Environmental and Earth Sciences, 4, 177-185.
[11] Akiska, S., Sayili, I.S. and Demirela, G. (2013) Three-Dimensional Subsurface Modeling of Mineralization: A Case Study from the Handeresi (Canakkale, NW Turkey) Pb-Zn-Cu Deposit. Turkish Journal of Earth Sciences, 22, 574-587.
[12] Journel, A.G. and Huijbregts, J.C.H. (1978) Mining Geostatistics. Academic Press, London, 600.
[13] Krige, D.G. (1951) A Statistical Approaches to Some Basic Mine Valuation Problems on the Witwatersrand. Journal of the Chemical, Metallurgical and Mining Society of South Africa, 52, 119-139.
[14] Goovaerts, P. (1997) Geostatistics for Natural Resources Evaluation. Oxford University Press, New York, 496.
[15] Bailey, T.C. and Gatrell, A.C. (1998) Interactive Spatial Data Analysis. Addison Wesley Longman, London.
[16] Iqbal, J., Thomasson, J.A., Jenkins, J.N., Owens, P.R. and Whisler, F.D. (2005) Spatial Variability Analysis of Soil Physical Properties of Alluvial Soils. Soil & Water Management & Conservation, 69, 1338-1350.
[17] Cambardella, C.A., Moorman, T.B., Parkin, T.B., Karlen, D.L., Turco, R.F. and Konopka, A.E. (1994) Field Scale Variability of Soil Properties in Central Iowa Soils. Soil Science Society of America Journal, 58, 1501-1511. http://dx.doi.org/10.2136/sssaj1994.03615995005800050033x
[18] Myers, D.E. (1991) Interpolation and Estimation with Spatially Located Data. Chemometrics and Intelligent Laboratory Systems, 11, 209-228. http://dx.doi.org/10.1016/0169-7439(91)85001-6
[19] Stone, M. (1974) Cross-Validation Choice and Assessment of Statistical Prediction. Journal of the Royal Statistical Society, 36, 111-147.
[20] Liu, Z.P., Shao, M.A. and Wang, Y.Q. (2013) Large-Scale Spatial Interpolation of Soil pH across the Loess Plateau, China. Environmental Earth Sciences, 69, 2731-2741.
http://dx.doi.org/10.1007/s12665-012-2095-z
[21] Zhang, R., Kravchenko, A. and Tung, Y.K. (1995) Spatial and Temporal Distribution of Precipitation in Wyoming. 15th Proceeding of Annual American Geophysical Union Hydrology Days, Fort Collins, CO, AGU, Washington, DC, 377-388.
[22] Hafezi Moghaddas, N., Ghafoori, M. and Ghazi, A. (2007) Investigation of Empirical Relationship between Shear Wave Velocity and N-SPT throughout the Mashhad City. 25th Annual Meeting of Earth Sciences, 145-152.  eww141013lx
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