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Erdal Şafak

Professor of Earthquake Engineering
Chairman, Department of Earthquake Engineering
Bogazici University, Kandilli Observatory and Earthquake Research Institute,
Department of Earthquake Engineering, 34688, Cengelkoy, Istanbul, Turkey
Tel. (+90).216.516 33 08
Fax: (+90).216.308 01 63
 E-mail: erdal.safak@boun.edu.tr

EDUCATIONAL BACKGROUND

  • B.S. in Civil Engineering, June 1973
    Istanbul Technical University, Istanbul, Turkey
  • M.S. in Structural Engineering, April 1975
    Istanbul Technical University,Istanbul,Turkey
  • PhD. in Structural Engineering, May 1980
    University of Illinois at Urbana-Champaign, Urbana, Illinois, USA

PROFESSIONAL BACKGROUND

  • June 2006 – present: Professor, Earthquake Engineering Department, Bogazici University, Kandilli Observatory and Earthquake Research Institute,  Istanbul, Turkey
  • January 2002 – June 2006: Research Structural Engineer and Project Chief, USGS, Earthquake Hazards Team, Pasadena, California
  • October 2000 – January 2002: Technical Advisor, employed by the U.S. State Department for the Saudi Geological Survey, Jeddah, Kingdom of Saudi Arabia.
  • March 1998 – September 2000: Research Professor, Division of Engineering, Colorado School of Mines, Golden, Colorado (while employed by the USGS).
  • May 1995  – September 2000: Research Structural Engineer, Group Leader and Project Chief, USGS, Golden, Colorado
  • August 1993 - December 1993: Professorial Lecturer, Department of Civil, Mechanical, and Environmental Engineering, The George Washington University, Washington, D.C. (while employed by the USGS).
  • January 1991 - May 1995: Research Structural Engineer, USGS Headquarters, Reston, Virginia.
  • January 1984 - January 1991: Research Structural Engineer, USGS, Menlo Park, California.
  • October 1988 - January 1991: Research Fellow, Stanford/USGS Institute for Research in Earthquake Engineering and Seismology, Stanford University, Palo Alto, California (while employed by the USGS).
  • July 1980 - January 1984: Project Engineer, Engineering Decision Analysis Company (EDAC), Palo Alto, California
  • June 1977 - July 1980: Graduate Research Assistant, Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
MEMBERSHIPS
  • Member, American Society of Civil Engineers (ASCE), 1978-present.
  • Member, American Academy of Mechanics (AAM), 1979-present.
  • Member, Earthquake Engineering Research Institute (EERI),1984-present.
  • Member, Seismological Society of America (SSA), 1985-present.
  • Member, Structural Engineers Association of California (SEAOC),1984-1991.

PROFESSIONAL
ACTIVITIES

  • Member of the Editorial Board, Earthquake Spectra, The Professional Journal of the Earthquake Engineering Research Institute, 2003- present.
  • Member, ASCE (American Society of Civil Engineers) Structural Division Technical Committee on Structural Identification of Constructed Facilities, 1994-present.
  • Member, ASCE Structural Division Technical Committee on Seismic Effects, 1989-1991.
  • Member, ICSSC (Interagency Committee on Seismic Safety in Construction), 1992-present.
  • Member, UJNR (U.S.-Japan National Research) Panel on seismic Effects, 1991-present.
  • Seismic Safety Coordinator, U.S. Geological Survey, 1992-present.
  • Scientific Advisor, NATO Project on Testing and Rehabilitation of Old Railway Bridges in Turkey, 1992-1997.
  • Member, ASCE Engineering Mechanics Division Technical Committee on Experimental Analysis and Instrumentation, 1991-1997.
  • Member, ASCE Aerospace Division Subcommittee on Structural Dynamics and Control, 1990-1992.
  • Associate Editor, EERI (Earthquake Engineering Research Institute) Newsletter, 1984-1991.
  • Member, Army Biaxial Shock Test Machine Technical Review Group, 1990.
  • Member, EERI Committee on International Membership, 1986.
  • Member, San Francisco Bay Area, San Bernardino County, Los Angeles, and Orange County Seismic Structural Instrumentation Committees, 1984-1985.

FIELDS OF INTEREST

Research, development, teaching, and technical advise on:

  • Response of structures under earthquake loads.
  • Assessment of seismic safety and mitigation of seismic risk.
  • Seismic instrumentation, data acquisition, and data analysis.
  • Non-destructive field-testing for safety evaluation.
  • System identification and damage detection.
  • Wave propagation in soils and structures.
  • Modeling and digital simulation of natural hazards.
  • Reliability analysis of structural systems.
  • Random vibrations and stochastic processes.
  • Active and passive control of structural systems.
  • Managing research projects, writing technical reports and papers, reviewing papers for journals, and evaluating research proposals for funding agencies.

PUBLICATIONS

   PAPERS IN REFEREED JOURNALS

  1. Foutch, D.A. E. Şafak (1981). Torsional vibration of wind excited symmetric structures, Journal of Wind Engineering and Industrial Aerodynamics, Elsevier Science Ltd., Vol.7, No.2, March 1981, pp.191-201.
  2. Foutch, D.A. and E. Şafak (1981). Torsional vibration of along-wind excited structures, Journal of the Engineering Mechanics Division, ASCE, Vol. 107, No. EM2, April 1981, pp.323-337.
  3. Bongiovanni, G., M. Çelebi, and E. Şafak (1987). Seismic rocking response of a triangular building founded on  sand, Earthquake Spectra, EERI, Vol.3, No.4, Nov. 1987, pp.793-810.
  4. Şafak, E. and D.A. Foutch (1987). Coupled vibrations of rectangular buildings subjected to normally-incident  random wind loads, Journal of Wind Engineering and Industrial Aerodynamics, Elsevier Science Ltd., 26 (1987) pp.129-148.
  5. Şafak, E. (1988). Analytical approach to calculation of response spectra from seismological models of ground motion, Earthquake Engineering & Structural Dynamics, Wiley Inter-Science, Vol.16, No.1, January 1988, pp.121-134.
  6. Şafak, E., C. Mueller, and J. Boatwright (1988). A simple model for strong ground motions and response spectra, Earthquake Engineering & Structural Dynamics, Wiley Inter-Science, Vol.16, No.2, February 1988, pp.203-215.
  7. Şafak, E. and D.M. Boore (1988). On low-frequency errors of uniformly modulated, filtered, white-noise models for ground motion, Earthquake Engineering & Structural Dynamics, Wiley Inter-Science, Vol.16, No.3, April 1988, pp.381-388.
  8. Şafak, E. and M.F. Bendimerad (1988). Peak response of 2-DOF uncoupled oscillator under two-directional base  motion, Earthquake Engineering & Structural Dynamics, Wiley Inter-Science, Vol.16, No.7, October 1988, pp.1061-1072.
  9. Şafak, E. (1989). Optimal-adaptive filters for modeling spectral shape, site amplification, and source scaling, Soil Dynamics & Earthquake Engineering, Elsevier Science Ltd., Vol.8, No.2, April 1989, pp.75-95.
  10. Çelebi, M., G. Bongiovanni, E. Şafak, and G. Brady (1989). Seismic response of a large-span roof diaphragm, Earthquake Spectra, EERI, Vol.5, No.2, May 1989, pp.337-350.
  11. Şafak, E. (1989). Adaptive modeling, identification, and control of dynamic structural systems: Part II- Applications, Journal of Engineering Mechanics, ASCE, Vol.115, No.11, November 1989, pp.2406-2426.
  12. Şafak, E. (1989). Adaptive modeling, identification, and control of dynamic structural systems: Part I- Theory, Journal of Engineering Mechanics, ASCE, Vol.115, No.11, November 1989, pp.2386-2405.
  13. Şafak, E. and M. Çelebi (1990). Method to estimate center of rigidity of a building using vibration recordings, Journal of Structural Engineering, ASCE, Vol.116, No.1, 1990, pp.85-97.
  14. Çelebi, M., E. Şafak, and N. Youssef (1991). Torsional response of a unique building, Journal of Structural Engineering, ASCE, Vol.117, No.5, May 1991, pp.1549-1566.
  15. Şafak, E. and M. Çelebi (1991). Recorded seismic response of Transamerica Building: Part II – System  identification, Journal of Structural Engineering, ASCE, Vol.117, No.8, August 1991, pp.2404-2424.
  16. Çelebi, M., and E.  Şafak (1991). Recorded seismic response of Transamerica Building: Part I - Data and  preliminary analysis, Journal of Structural Engineering, ASCE, Vol.117, No.8, August 1991, pp.2388-2403.
  17. Şafak, E. (1991). Identification of linear structures using discrete-time filters, Journal of Structural Engineering, ASCE, Vol.117, No.10, October 1991, pp.3046-3085.
  18. Şafak, E. and M. Çelebi (1991). Analyses of recorded responses of two high-rise buildings during the Loma Prieta earthquake of October 17, 1989,  Bulletin of Seismological Society of America, Special Issue on the 1989 Loma Prieta, California,  earthquake and its effects, October 1991, pp.2087-2110.
  19. Şafak, E. and M. Çelebi (1992). Recorded seismic response of Pacific Park Plaza: Part II – System identification, Journal of Structural Engineering, ASCE, Vol.118, No.6, June 1992, pp.1566-1589.
  20. Çelebi, M., and E. Şafak (1992). Seismic response of Pacific Park Plaza: Part I - Data and preliminary analysis, Journal of Structural Engineering, ASCE, Vol.118, No.6, June 1992, pp.1547-1565.
  21. Şafak, E. (1993). Response of a 42-story steel-frame building to the Ms=7.1 Loma Prieta Earthquake, Engineering Structures, Vol.15, No.6, pp.403-421.
  22. Şafak, E. and A. Frankel (1994). Structural response to 3-D simulated earthquake motions in San Bernardino Valley, Journal of Structural Engineering, ASCE, Vol.120, No.10, October 1994, pp.2820-2839.
  23. Şafak, E. (1995). Detection and identification of soil-structure interaction in buildings from vibration recordings, Journal of Structural Engineering, ASCE, Vol.121, No.5, May 1995, pp.899-906.
  24. Şafak, E. (1995). Discrete-time analysis of seismic site amplification, Journal of Engineering Mechanics, ASCE, Vol.121, No.7, July 1995, pp.801-809.
  25. Şafak, E. (1997). Models and methods to characterize site amplification from a pair of records, Earthquake Spectra, EERI, Vol.13, No.1, pp.97-129.
  26. Şafak, E. (1998). Propagation of seismic waves in tall buildings, The International Journal of the Structural Design of Tall Buildings, John Wiley & Sons Ltd., Vol. 7, pp.295-306.  
  27. Şafak, E. (1998). New approach to analyze soil-building systems, Soil Dynamics & Earthquake Engineering, Elsevier Science Ltd., Vol. 17, No. 7-8, pp.509-517.
  28. Şafak, E. (1999). Wave propagation formulation of seismic response of multi-story buildings, Journal of Structural Engineering, ASCE, Vol. 125, No. 4, pp.426-437.   
  29. Şafak, E. (2000). Characterization of seismic hazards and structural response by energy flux, Soil Dynamics & Earthquake Engineering, Elsevier Science Ltd., Vol. 20, No. 1-4, pp.39-43.
  30. Şafak, E. and M. Erdik – Coordinators (2000). Recorded main shock and aftershock motions, Earthquake Spectra – Special Issue on 1999 Kocaeli. Turkey Earthquake, December 2000, Vol. 16, Issue S1, pp. 97-112.
  31. Şafak, E. (2001). Local site effects and dynamic soil behavior, Soil Dynamics & Earthquake Engineering, Elsevier Science Ltd., Vol. 21, pp.453-458.
  32.  Zhang, R.R., S. Ma, E. Şafak, and S. Harzell (2003). Hilbert-Huang transform analysis of dynamic and earthquake motion recordings, Journal of Engineering Mechanics, ASCE, Vol. 129, No. 8, August 2003, pp. 861-875.
  33. Kohler, M.D., P.M. Davis, and E. Şafak (2005). Earthquake and Ambient Vibration Monitoring of the Steel Frame UCLA Factor Building, Earthquake Spectra, EERI (in press).
  34. Şafak, E. (2005). Importance of surface waves on seismic response and damage,  Earthquake Spectra, EERI (in press).  
  35. Safak, E. (2005). Time-domain representation of frequency-dependent foundation impedance functions, Soil Dynamics & Earthquake Engineering, Elsevier Science Ltd. (submitted for publication).
  36. Şafak, E. (2005). Block-diagrams for digital simulation of seismic response of soil-foundation systems, Journal of Structural Engineering, ASCE (submitted for publication).

    CONFERENCE PROCEEDINGS, REPORTS, AND OTHER ACCOMPLISHMENTS

  • 70+ conference papers, and 12 technical reports.
  • Invitations to 50+ scientific conferences, workshops, review and advisory panels, and committees   

 

 
 
     
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