scholarly journals SEISMIC RISK ASSESSMENT OF URBANIZED TERRITORY

Author(s):  
В.Б. Заалишвили ◽  
Б.В. Дзеранов ◽  
Л.Н. Невский ◽  
И.Г. Архиреева

На основе учета всей совокупности факторов сейсмическая опасность, уязвимость застройки, сейсмический риск, разработана методика оценки и прогноза сейсмического риска. Используя полученные результаты, выполнена оценка сейсмического риска территории города Владикавказа, что позволило выделить наиболее сейсмически уязвимые участки Based on accounting all factors: seismic hazard, vulnerability of buildings a method of seismic risk assessment and prognosis of seismic risk is developed. Using the developed methodology the seismic risk assessment of Vladikavkaz city is performed, this allowed to identify the most seismically vulnerable areas

2020 ◽  
Vol 12 (5) ◽  
pp. 1796 ◽  
Author(s):  
Gordana Pavić ◽  
Marijana Hadzima-Nyarko ◽  
Borko Bulajić

Due to increases in the number of inhabitants and their concentrations in densely populated areas, there is a growing need in modern society to be cautious towards the impact of catastrophic natural events. An earthquake is a particularly major example of this. Knowledge of the seismic vulnerability of buildings in Europe and around the world has deepened and expanded over the last 20 years, as a result of the many devastating earthquakes. In this study, a review of seismic risk assessment methods in Croatia was presented with respect to the hazard, exposure, and vulnerability of buildings in the fourth largest city (Osijek) in Croatia. The proposed algorithm for a detailed risk assessment was applied to a database and is currently in its initial stage.


2017 ◽  
Vol 8 (2) ◽  
pp. 39-59 ◽  
Author(s):  
Swarup Ghosh ◽  
Subrata Chakraborty

This article outlines the performance-based seismic risk assessment (PBSRA) of structures requiring probabilistic seismic hazard analysis (PSHA) to obtain hazard curves and an evaluation of the demand model by a nonlinear structural response analysis under properly selected ground motion records. Unfortunately, such site-specific information is not readily available for Northeast region of India. The present study focuses on these two aspects to supplement the PBSRA. The estimations of hazard curves are demonstrated by considering the seismicity within 300 km radius around the considered locations and specified exposure period. Due to limited availability of natural records in this region, synthetic accelerograms are generated using stochastic point source models by identifying the most contributing magnitude distance combinations from disaggregation of the PSHA results. The significant variabilities observed in the estimated hazard, synthetic accelerograms and nonlinear building responses in the various locations indicate the need of explicit site-specific analysis for PBRSA of structures in the region.


2016 ◽  
Vol 106 (6) ◽  
pp. 2584-2598 ◽  
Author(s):  
Michael Haas ◽  
Amotz Agnon ◽  
Dino Bindi ◽  
Stefano Parolai ◽  
Massimiliano Pittore

2021 ◽  
Vol 16 (1) ◽  
pp. 111-119
Author(s):  
Noor Suhaiza Sauti ◽  
Mohd Effendi Daud ◽  
Masiri Kaamin ◽  
Suhaila Sahat

This research was conducted with a view to updating the management of earthquakes through an exposure vulnerability and potential seismic risk assessment, along with its application in Sabah (a state in East Malaysia). A set of indicators and methodologies has been proposed in this study with the goal of evaluating the level of exposure vulnerability and potential risk of certain locations to earthquake events at the local district scale. This study specifically involves the development of exposure vulnerability indicators; the statistical analysis method to standardize multivariate data together with a weight calculation of indicator variables; and a mathematical combination of different indicators for the development of the index map using the spatial analysis function of Geographical Information System (GIS) tools. Then, the derived exposure vulnerability index (EVI) map is overlaid with the seismic hazard in determining the geographical location of the most vulnerable areas and their exposure to seismic hazard events. As a result, and based on the available data, the exposure vulnerability index map shows that most districts in Sabah are at relatively low and moderate levels of risk except for a few districts, with several major cities in Sabah, such as Kota Kinabalu, Penampang, Sandakan and Tawau municipality, being situated at a high or very high exposure index. The combination of EVI maps and hazard maps indicate the dominance of the two factors influencing the potential level of earthquake risk. Studies reveal most of the southwest and central parts of the region are not at risk, as both exposure and hazard factors are at a low level. The proposed approach depicts an instrument for identifying cost-effective risk reduction initiatives by providing a scientific method for regional risk planning and management strategies. This research represents the first attempt to evaluate Sabah’s vulnerability to this type of natural disaster by understanding the spatial relationship between exposure vulnerability and earthquake hazard, which undoubtedly could be improved in several aspects.


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