scholarly journals Influence of shaking intensity attenuation peculiarities on reliability of earthquake loss estimation in emergency mode

2019 ◽  
pp. 23-37 ◽  
Author(s):  
N. I. Frolova ◽  
I. P. Gabsatarova ◽  
N. V. Petrova ◽  
A. N. Ugarov ◽  
N. S. Malaeva
Keyword(s):  
Input Data ◽  
Seismic Intensity ◽  
Intensity Attenuation ◽  
Macroseismic Field ◽  
Hazard Zoning ◽  
Earthquake Loss ◽  
Complete Set ◽  
The Russian Federation ◽  
Loss Estimations ◽  
Emergency Mode

The methods and results of seismic hazard zoning are investigated for the Russian Federation territory and abroad. The input data used in the zoning procedure, aimed at revealing the boundaries of areas with stable seismic intensity attenuation parameters have been analyzed. The zoning procedure has been developed for determining the boundaries of territories, within which the macroseismic field parameters (i.e., the coefficients in N.V. Shebalin’s equation; the orientation of the elliptic isoseist axes, as well as the ratio of their semi-axes) show close values in each point. Examples are given in distinguishing zones characterized by quasi-stable parameters for separate regions, as well as in calibrating the computer model of the macroseismic field. The case studies are considered in the presence of a complete set of input data and under conditions of their insufficiency. The efficiency of the macroseismic field calibrated models application in the Extremum system in order to increase the reliability of near real time earthquake loss estimations is shown.

scholarly journals Models of the macroseismic field earthquakes and their influence on seismic hazard assessment values for Central Asia

2020 ◽  
Vol 11 (3) ◽  
pp. 606-623
Author(s):  
T. U. Artikov ◽  
R. S. Ibragimov ◽  
T. L. Ibragimova ◽  
M. A. Mirzaev
Keyword(s):  
Seismic Hazard ◽  
Central Asia ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Seismic Intensity ◽  
Seismic Load ◽  
Macroseismic Data ◽  
Intensity Attenuation ◽  
Macroseismic Field ◽  
Macroseismic Scale

Seismic intensity assessment in points of a macroseismic scale plays an important role for researching the seismic history of areas characterized by active seismicity, as well as for construction (and updating) of seismic zoning maps in various scales. Macroseismic scale points are generally referred to in construction standards applied in the majority of post-Soviet states. In our study aimed to model the macroseismic field of earthquakes, a large volume of macroseismic data on Central Asia was analyzed, and coefficients used in Blake–Shebalin and Covesligeti equations were aligned. This article presents a generalized dependence model of macroseismic intensity attenuation with distance. The model takes into account seismic load features determined by various depths of earthquakes. The ratios of small and big axes of the ellipse, that approximates real isoseists, are estimated with respect to seismic scale points, earthquake depths and magnitudes. The East Uzbekistan area is studied as an example to investigate whether seismic hazard assessment values may differ depending on a chosen law of seismic influence intensity attenuation with distance.

scholarly journals Rapid estimation of earthquake loss based on instrumental seismic intensity: design and realization

2013 ◽  
Vol 26 (1) ◽  
pp. 67-73 ◽  
Author(s):  
Hongsheng Huang ◽  
Lin Chen ◽  
Gengqing Zhu ◽  
Lin Wang ◽  
Yanzhao Lin ◽  
...  
Keyword(s):  
Seismic Intensity ◽  
Rapid Estimation ◽  
Earthquake Loss

Annualized and Scenario Earthquake Loss Estimations for California

2013 ◽  
Vol 29 (4) ◽  
pp. 1183-1207 ◽  
Author(s):  
Rui Chen ◽  
David M. Branum ◽  
Chris J. Wills
Keyword(s):  
Los Angeles ◽  
San Francisco ◽  
Ground Motions ◽  
Economic Losses ◽  
Metropolitan Statistical Area ◽  
Near Surface ◽  
Scenario Earthquake ◽  
Earthquake Losses ◽  
Earthquake Loss ◽  
Loss Estimations

We update annualized and scenario earthquake loss estimations for California using HAZUS, a loss estimation tool developed by the Federal Emergency Management Agency, and evaluate the effects of changes in input ground motions over the last decade on estimated earthquake losses. Our estimated statewide average earthquake loss to building stock from shaking is approximately $2.8 billion per year, with 32% of it occurring in Los Angeles County and 23% in the San Francisco-Oakland-Fremont metropolitan statistical area. This estimate reflects a 25% to 28% reduction because of changes in input ground motions. Scenario results indicate a 28% to 63% reduction in estimated building economic losses because of changes in input ground motions. Changes in input ground motions are mainly attributed to the use of next generation attenuation relations and, to a lesser extent, to updated earthquake source models and differing approaches for incorporating near-surface site effects.

scholarly journals Macroseismic intensity attenuation equations for Central Asia earthquakes

2021 ◽  
Vol 929 (1) ◽  
pp. 012029
Author(s):  
T U Artikov ◽  
R S Ibragimov ◽  
T L Ibragimova ◽  
M A Mirzaev
Keyword(s):  
Seismic Hazard ◽  
Central Asia ◽  
Seismic Intensity ◽  
Macroseismic Intensity ◽  
Earthquake Magnitude ◽  
Source Depth ◽  
Strong Earthquakes ◽  
Intensity Attenuation ◽  
Hazard Assessments ◽  
Macroseismic Survey

Abstract Based on macroseismic survey data for strong earthquakes in Central Asia, the coefficients of attenuation of seismic intensities with distance in the Blake-Shebalin- and Kovesligethy -type equations were refined. A new generalized dependence of macroseismic intensity attenuation on distance, taking into account the depth of the earthquake hypocentre, were obtained. Relations between the minor and major axes of the ellipse approximating real isoseists depending on the shaking strength, source depth and earthquake magnitude were found. With the example of the territory of eastern Uzbekistan, the influence of the choice of the law of seismic intensity attenuation with distance on the obtained seismic hazard assessments is investigated.

Comparative earthquake loss estimations for high-code buildings in Istanbul

2020 ◽  
Vol 129 ◽  
pp. 105956 ◽  
Author(s):  
Ufuk Hancilar ◽  
Karin Sesetyan ◽  
Eser Cakti
Keyword(s):  
Earthquake Loss ◽  
Loss Estimations

scholarly journals A quick earthquake disaster loss assessment method supported by dasymetric data for emergency response in China

2016 ◽  
Vol 16 (3) ◽  
pp. 885-899 ◽  
Author(s):  
Jinghai Xu ◽  
Jiwen An ◽  
Gaozong Nie
Keyword(s):  
Emergency Response ◽  
Estimation Method ◽  
Seismic Intensity ◽  
Loss Estimation ◽  
Earthquake Disaster ◽  
Disaster Loss ◽  
Exposure Data ◽  
Intensity Field ◽  
Earthquake Loss ◽  
Speed And Accuracy

Abstract. Improving earthquake disaster loss estimation speed and accuracy is one of the key factors in effective earthquake response and rescue. The presentation of exposure data by applying a dasymetric map approach has good potential for addressing this issue. With the support of 30''  ×  30'' areal exposure data (population and building data in China), this paper presents a new earthquake disaster loss estimation method for emergency response situations. This method has two phases: a pre-earthquake phase and a co-earthquake phase. In the pre-earthquake phase, we pre-calculate the earthquake loss related to different seismic intensities and store them in a 30''  ×  30'' grid format, which has several stages: determining the earthquake loss calculation factor, gridding damage probability matrices, calculating building damage and calculating human losses. Then, in the co-earthquake phase, there are two stages of estimating loss: generating a theoretical isoseismal map to depict the spatial distribution of the seismic intensity field; then, using the seismic intensity field to extract statistics of losses from the pre-calculated estimation data. Thus, the final loss estimation results are obtained. The method is validated by four actual earthquakes that occurred in China. The method not only significantly improves the speed and accuracy of loss estimation but also provides the spatial distribution of the losses, which will be effective in aiding earthquake emergency response and rescue. Additionally, related pre-calculated earthquake loss estimation data in China could serve to provide disaster risk analysis before earthquakes occur. Currently, the pre-calculated loss estimation data and the two-phase estimation method are used by the China Earthquake Administration.

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