Soil surface seismic hazard maps for the proposed site of Nasser New City, West Assiut, Egypt

被引：0
作者：
Arfa M. [1 ]
Elshafei F.-H.R. [2 ]
机构：
[1] Geology Dept., Faculty of Science, Al-Azhar University, Assiut
[2] National Research Institute of Astronomy and Geophysics, Cairo
来源：
Arabian Journal of Geosciences | 2021年 / 14卷 / 12期
关键词：
Amplification factor; Nasser city; Assiut; Probabilistic seismic hazard analysis (PSHA); Site classification; Spectral acceleration (SA);
D O I：
10.1007/s12517-021-07469-6
中图分类号：
学科分类号：
摘要：
The objective of this paper was to develop the soil surface seismic hazard maps for the proposed site of Nasser New City, West Assiut, based on probabilistic seismic hazard assessment, mainly in terms of the mean peak ground acceleration (PGA) and spectral acceleration (SA) values. Assessment of soil surface seismic hazard maps is required for disaster preparedness, risk, and hazard mitigation decisions for the study area. To carry out this assessment, soil profile is defined based on soil shear wave velocity that is global Vs30 of USGS. These velocities are converted to site classification based upon the National Earthquake Hazards Reduction Program (NEHRP) guidelines. A seismic hazard evaluation with level hazard 10% probability of exceedance in 50 years in terms of 5% damped peak ground acceleration and spectral acceleration was carried out, PGA and SA values at bedrock, at 0.1, 0.5, 1.0, and 2.0 s spectral period, were calculated at central part of Nasser New City. Using site amplification factors corresponding to various site classes based on Vs30, spatial variation of SA at spectral periods 0.1, 0.5, 1.0, and 2.0 s for 475 years as return period is demonstrated as maps. Results of this work are important for civil engineering purposes, land use planning, and resistant structure design for earthquake. © 2021, Saudi Society for Geosciences.
引用
收藏
相关论文
共 34 条
  • [1] Ambraseys N.N., the seismicity of the Southwest Asia (date from a XV century Arabic manuscript), Revue pour L'étude calamités, Genkve, 37, pp. 18-30, (1961)
  • [2] Ambraseys N.N., Melville C.P., Adams R.D., The seismicity of Egypt, (1994)
  • [3] Ben-Menahem A., Nur A., Vered M., Tectonics, seismicity and structure of the Afro-Eurasian junction-The breaking of an incoherent plate, Phys Earth Planet Inter, 12, pp. 1-50, (1976)
  • [4] NCEER/SEAOC/BSSC Workshop on Site Response During Earthquakes and Seismic Code Provisions, Los Angeles, California, G.R. Martin (ed.), Research Special Publication NCEER-94- SP01, (1992)
  • [5] Borcherdt R.D., ―Estimates of site-dependent response spectra for design (Methodology and Justification),‖Earthq, Spectra, 10, pp. 617-653, (1994)
  • [6] Bosworth W., Taviani M., Late Quaternary reorientation of stress field and the extension direction in the Southern Gulf of Suez, Egypt: Evidence from uplifted coral terraces, Mesoscopic fault arrays and borehole breakouts, Tectonics, 15, pp. 791-802, (1996)
  • [7] NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, 1997 edition, Federal Emergency Management Agency, FEMA 303 Report, (1998)
  • [8] Geological map of Egypt, scale 1:500,000, (NG 36 NW, Assiut), (1987)
  • [9] Cornell C.A., Engineering seismic risk analysis, Bull Seismol SocAm, 18, pp. 1583-1606, (1968)
  • [10] Cornell C.A., Vanmarcke E.H., The major influences on seismic risk, pp. 13-18, (1969)
1234