Evaluation of Seismic Hazard for Georgia and Seismic Risk for City Mtskheta with Modern Aproaches

Nino S. Tsereteli, Otar Sh. Varazanashvili, Zurab R. Gogoladze, Vakhtang G. Arabidze, Davit T. Svanadze, Manana P. Kupradze, Irine B. Khvedelidze

Abstract


In this paper we are presented brief overview of the project  "Evaluation of seismic hazard for Georgia and  seismic risk for city Mtskheta with modern aproaches". Seismic hazard and risk assessment is very importance in Southern Caucasus (SC) and particularly in Georgia. The goal of society is to create urban environment that is protected from destructive earthquakes and minimize the expected losses. However, complete elimination of expected losses is unreal. One of the reasons for it is deficiency of knowledge about real seismic hazard and vulnerability of urban areas and infrastructure. In this regard, the general purpose of this project was to provide a reliable seismic hazard assessment at the national level and risk assessment for strategically important objects (cities, critical facility, lifelines, cultural heritage and others) of Georgia. In our case Historic city Mtskheta was chosen as strategic objects. Historic city Mtskheta is located in eastern Georgia, and is the administrative centre of the region of Mtskheta-Tianeti and Mtskheta Municipality. Mtskheta is a city museum and in 1994 was listed as a UNESCO World Heritage Site. Mtskheta is characterized by increasing urbanization, population density and infrastructure. Also taking into account the current reality of high vulnerability, the results of this project allowed us to evaluate recommendations for a new strategy of urban planning of the city, by proposing specific mitigation actions in district with high seismic risk, as well as adequate protection of infrastructures in case of earthquake.

Keywords


seismic hazard, seismic risk, earthquake

Full Text:

PDF

References


Danciu, L., Sesetyan, K., Demircioglu, M. B., Giardini, D., Erdik, M., Akkar, S., Gulen, L., Zare, M., Adamia, Sh., Ansari, A., Arakelyan, A., Askan, A., Avanesyan, M., Babayan, H., Chelidze, T., Durgaryan, R., Elias, A., Hamzehloo, H., Hessami, Kh., Kalafat, D., Kale, O., Karakhanyan, A., Khan, M. A., Mamadli, T., Al-Qaryouti, M., Sayab, M., Tsereteli, N.,Utkucu, M., Varazanashvili, O., Waseem, M., Yalcin, H., Yilmaz, M.T.The 2014 Earthquake Model of the Middle East: Seismogenic Sources. Bulletin of Earthquake Engineering. Volume 16, Issue 8, 1 August 2018, Pages 3465-3496.DOI: 10.1007/s10518-017-0096-8

Sesetyan, K., Demircioglu, M., Gulen, L., Zare, M., Basili, R., Elias, A.,Adamia, Sh., Tsereteli, N., Yalcin, H., Utkucu, M., Asif Khan, M., Sayab, M., Hessami, Kh., Rovida, A. N., Stucchi, M., Burg, J. P., Karakhanian, A., Babayan, H. Avanesyan, M., Mammadli, T., Al-Qaryouti, M., Kalafat, D., Varazanashvili, O., Erdik, M., Giardini, D.The 2014 seismic hazard model of the Middle East: overview and results. Bulletin of Earthquake Engineering. Volume 16, Issue 8, 1 August 2018, Pages 3535-3566. DOI: 10.1007/s10518-018-0346-4

Mehdi Zare , HamidehAmini, PouyeYazdi, Karin Sesetyan, Mine BetulDemircioglu, DoganKalafat, Mustafa Erdik, Domenico Giardini , M. Asif Khan , Nino Tsereteli. 2014. Recent developments of the Middle East catalog. Journal of Seismology. Volume 18, N4 , pp.749-772, July. DOI 10.1007/s10950-014-9444-1

Cauzzi, C., Faccioli, E., Vanini, M., Bianchini, A. 2015a. Updated predictive equations for broadband (0.01–10 s) horizontal response spectra and peak ground motions, based on a global dataset of digital acceleration records. Bulletin of Earthquake Engineering 13 (6), 1587-1612.

Campbell, K. W., and Bozorgnia, Y. 2014. NGA-West2 ground motion model for the average horizontal components of PGA, PGV, and 5%-damped linear acceleration response spectra. Earthquake Spectra, 30(3): 1087–1115, Aug 2014. doi: 10.1193/062913EQS

Chiou, B. and Youngs R. R. 2014. Update of the Chiou and Youngs NGA Model for the Average Horizontal Component of Peak Ground Motion and Response Spectra. Earthquake Spectra: August 2014, Vol. 30, No. 3, pp. 1117-1153.

Kotha, S.R., Bindi, D. and Cotton, F. 2016a. Magnitude and Region Dependent Correlation of Response Spectral Values for Site-specific Conditional Mean Spectra. Submitted to Bulletin of Earthquake Engineering 12.

Bard, P.-Y.: Microtremor measurements: a tool for site effect estimation, in: The effects of surface geology on seismic motion, edite by: Irikura, K., Kudo, K., Okada, H., and Sasatani, T., Balkema, Rotterdam, 1251–1279, 1999.

Bonnefoy-Claudet, S., Cotton, F., Bard, P.-Y., Cornou, C., Ohrnberger, M., and Wathelet, M.: Robustness of the H/V ratio peak frequency to estimate 1D resonance frequency, in: Proceedings of the 3rd International Symposium on the Effects of Surface Geology on Seismic Motion, 2006.

Nogoshi, M. and Igarashi, T. (1970). On the propagation characteristics of microtremors. J. Seism. Soc. Japan 23, 264-280(in Japanese with English abstract).

Nogoshi, M. and Igarashi, T. (1971). On the amplitude characteristics of microtremors. J. Seism. Soc. Japan. 24, 24-40(in Japanese with English abstract).

Nakamura, Y. (1989). A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface. Quarterly Report Railway Tech. Res. Inst., 30:1, 25-30.

Lachet C., Bard P.-Y. (1994). Numerical and Theoretical Investigations on the Possibilities and Limitations of Nakamura's Technique. J. Phys. Earth, 42, 377-397.

Fäh, D., Rüttener, E., Noack, T. and P. Kruspan (1997). Microzonation of the City of Basel. Journal of Seismology, 1, 87-102.

Maraschini M. Ernst F.E. Foti S. Socco L.V., 2010. A new misfit function for multimodal inversion of surface waves, Geophysics, 75 (4), G31–G43, doi:10.1190/1.3436539.

Maraschini M. Foti S., 2010. A Monte Carlo multimodal inversion of surface waves, Geophys. J. Int., 182(3) 1557–1556, oi: 10.1111/j.1365-246X.2010.04703.x.

Nino Tsereteli, Vakhtang Arabidze, OtarVarazanashvili, Tengiz Gugeshashvili, Teimuraz Mukhadze and Alexander Gvencadze. 2014. Vulnerability Analysis and GIS Based Seismic Risk Assessment Georgia Case. Improving Disaster Resilience and Mitigation - IT Means and Tools. ISBN:NATO Science for Peace and Security Series C: Environmental Security 143, pp.307-321. http://link.springer.com/chapter/10.1007/978-94-017-9136-6_20#page-1


Refbacks

  • There are currently no refbacks.