Probabilistic Assessment of Seismic Hazard in Southeastern Region of Brazil

2013 ◽  
Author(s):  
Tatiana Romero ◽  
Edgar R. Rondán ◽  
Jesus Berrocal
Keyword(s):  
Seismic Hazard ◽  
Probabilistic Assessment ◽  
Southeastern Region

Seismic hazard sensitivity analysis: A multi-parameter approach

1991 ◽  
Vol 81 (3) ◽  
pp. 796-817
Author(s):  
Nitzan Rabinowitz ◽  
David M. Steinberg
Keyword(s):  
Sensitivity Analysis ◽  
Seismic Hazard ◽  
Subjective Probability ◽  
Probability Distributions ◽  
Input Parameter ◽  
The Other ◽  
Probabilistic Assessment ◽  
Input Parameters ◽  
Parameter Approach

Abstract We propose a novel multi-parameter approach for conducting seismic hazard sensitivity analysis. This approach allows one to assess the importance of each input parameter at a variety of settings of the other input parameters and thus provides a much richer picture than standard analyses, which assess each input parameter only at the default settings of the other parameters. We illustrate our method with a sensitivity analysis of seismic hazard for Jerusalem. In this example, we find several input parameters whose importance depends critically on the settings of other input parameters. This phenomenon, which cannot be detected by a standard sensitivity analysis, is easily diagnosed by our method. The multi-parameter approach can also be used in the context of a probabilistic assessment of seismic hazard that incorporates subjective probability distributions for the input parameters.

scholarly journals Expected Direct Seismic Losses Assessment Using Gis. Case Study for Iaşi Municipality

2013 ◽  
Vol 9 (3) ◽  
pp. 8-14
Author(s):  
Radu Văcăreanu ◽  
Dan Lungu ◽  
Alexandru Aldea ◽  
Cristian Arion ◽  
Cristian Neagu ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Seismic Hazard ◽  
World Wide ◽  
Seismic Damage ◽  
Seismic Fragility ◽  
Probabilistic Assessment ◽  
Building Stock ◽  
Existing Building ◽  
Seismic Response Of Buildings

Abstract Expected direct seismic losses assessment is performed on probabilistic basis using world-wide accepted methodologies for two study areas located in Iasi Municipality. The probabilistic assessment refers to the following issues: site-dependent seismic hazard, expected seismic response of buildings, seismic fragility of structures, expected seismic damage. The analysis of the spatial distribution of the existing building stock as well as the presentation of the results on expected direct seismic losses are performed using geographic information systems (GIS)

scholarly journals Seismotectonics of Armenia: main problems

2021 ◽  
Vol 66 (3) ◽  
Author(s):  
Rudolf S. Sargsyan ◽  
◽  
Karlen S. Ghazaryan ◽  
Valeriy Yu. Burmin ◽  
◽  
...  
Keyword(s):  
Seismic Hazard ◽  
Historical Earthquakes ◽  
Probabilistic Assessment ◽  
Strong Earthquakes ◽  
Seismological Data ◽  
Observation Systems ◽  
Fault Tectonics ◽  
Discrete Nature ◽  
Lattice Network ◽  
Instrumental Period

The article describes the main problems in the existing researches on the seismotectonics of the territory of Armenia. A review was conducted on certain issues related to the accuracy of the initial seismological data, the problem of identifying possible focal zones of strong earthquakes, and the probabilistic assessment of the seismic hazard of the territory of Armenia. As the results of numerous studies show, the initial seismological data from catalogs and bulletins are characterized by their heterogeneity. Different observation systems and different methods of seismological data processing have led to the fact that when visualizing the spatial distribution of earthquake epicenters on the territory of Armenia, during the instrumental period of observations, an artificially lattice network of epicenters is obtained, which does not agree in any way with the fault tectonics of the territory. During the stud of distribution of earthquake hypocenters by depth, the discrete nature of their distribution was revealed. There is also a number of disadvantages in the area of allocation of focal zones of strong earthquakes. The main part of the conducted research was mainly based on data on previously recorded strong seismic events, as well as on data on historical earthquakes, as a result, for the most part of the studied territory, in fact, no research was conducted. In addition, there are relevant questions about the tectonic basis used in these studies. The last group of problems concerns the probabilistic assessment of the seismic hazard of the territory of Armenia. It is shown that in the existing works, there are quite a lot of unsubstantiated assumptions.Based on the analysis, it is concluded that in the field of seismotectonic studies of the territory of Armenia, there are a number of urgent tasks that require priority solutions.

A probabilistic assessment of the seismic hazard in Turkey

1985 ◽  
Vol 117 (3-4) ◽  
pp. 295-344 ◽  
Author(s):  
M. Erdik ◽  
V. Doyuran ◽  
N. Akkaş ◽  
P. Gülkan
Keyword(s):  
Seismic Hazard ◽  
Probabilistic Assessment

Seismic Hazard Assessment: Simultaneous Effect of Earthquakes at Close and Distant Sites

2002 ◽  
Vol 18 (4) ◽  
pp. 615-629 ◽  
Author(s):  
Gideon Leonard ◽  
David M. Steinberg
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Peak Ground Acceleration ◽  
Seismic Hazard Assessment ◽  
Dead Sea ◽  
Probabilistic Assessment ◽  
Ground Acceleration ◽  
Emergency Relief ◽  
A Site ◽  
Relief Efforts

A modified version of seismic hazard assessment, directed toward planning of emergency relief efforts, is proposed. The method begins with a probabilistic hazard assessment to determine a reference peak ground acceleration (PGA) at a near site, rather than using a reference earthquake of a given magnitude. The reference PGA then serves as a basis for a probabilistic assessment of PGA at more distant sites. The ideas are illustrated by studying seismic hazard for Northern Israel from earthquakes on the northern section of the Dead Sea Rift (DSR). The reference PGA at a site 10 km from the DSR is taken to be 0.3 g, which has a return period estimated to be 320 years. Given an event with PGA of 0.3 g at 10 km, the subsequent analysis for distant sites shows that there is less than a 31% probability of PGA above 0.1 g at 30 km and an 8% probability that the PGA at 50 km will exceed 0.1 g.

Probabilistic Assessments of the Seismic Hazard in Northern Armenia (Spitak Region)

1996 ◽  
Vol 12 (2) ◽  
pp. 199-216 ◽  
Author(s):  
Yu K. Chernov ◽  
V. Yu Sokolov
Keyword(s):  
Seismic Hazard ◽  
Return Period ◽  
Response Spectra ◽  
Building Code ◽  
Probabilistic Assessment ◽  
Intensity Scale ◽  
Ground Acceleration ◽  
The Past ◽  
Design And Construction

The Spitak (Armenia) earthquake of December 7, 1988, (M=6.9) revealed the necessity to revise the assessments of seismic hazard obtained in the past. We used recently developed method for quantitative probabilistic assessment of seismic shaking to resolve the problem. The assessments of probable intensity of shaking in terms of MSK - 64 intensity scale showed that for this region the intensity with return period T=1000 years must be taken as MSK IX instead of MSK VII and MSK VIII assigned to Armenia by the building code. Probable Fourier and response spectra of ground acceleration have been estimated also, and may be used for design and construction of new building and structures in this region.

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