Nisqually Earthquake Electric Utility Analysis

2006 ◽  
Vol 22 (2) ◽  
pp. 491-509 ◽  
Author(s):  
Jaewook Park ◽  
Nobuoto Nojima ◽  
Dorothy A. Reed
Keyword(s):  
Distribution System ◽  
Geographical Information Systems ◽  
Systems Approach ◽  
Electric Utility ◽  
Geographical Information ◽  
Peak Ground Velocity ◽  
Utility Analysis ◽  
Ground Acceleration ◽  
Earthquake Scenario ◽  
Utility Distribution

The performance of an urban electric utility distribution system was evaluated for the February 2001 Nisqually earthquake. The restoration rate of the lifeline following the event was determined; the distribution of outage durations was estimated; and correlations between lifeline damage and instrumental Modified Mercalli intensity, peak ground velocity, and peak ground acceleration values were ascertained using a GIS (geographical information systems) approach. Using a logit regression analysis, a fragility curve was developed for the lifeline in a manner similar to O'Rourke's formulation of water-line performance (O'Rourke et. al. 2000). Extrapolation of the model to the Seattle Fault earthquake scenario was made to demonstrate its feasibility for prediction.

scholarly journals Probabilistic seismic hazard assessment of the historical peninsula of Istanbul

2012 ◽  
Vol 12 (11) ◽  
pp. 3483-3493 ◽  
Author(s):  
G. Ç. Ince
Keyword(s):  
Seismic Hazard ◽  
Geographical Information Systems ◽  
Ground Movement ◽  
Geographical Information ◽  
Peak Ground Velocity ◽  
Exceedance Probability ◽  
Probabilistic Seismic Hazard Assessment ◽  
Spectral Acceleration ◽  
Ground Acceleration ◽  
Acceleration Parameter

Abstract. In order to design buildings that are resistant to earthquakes, first it is necessary to determine the parameters of ground motion. In this study, the earthquake seismic hazard analysis of the Old City Districts of Istanbul (Fatih and Eminonu) was probabilistically defined. For the analysis, the study zone was divided into 307 cells of 250 × 250 m using geographical information systems, and these cells were used in the mapping of all the data obtained. Then, for a building lifetime of 50 yr, the acceleration parameters of earthquake ground motions, peak ground acceleration, peak ground velocity, and spectral acceleration values of 0.2 s and 1 s were obtained at the bedrock level according to 10% and 40% exceedances. Additionally, in order to produce the artificial acceleration-time records of the ground movement in accordance with the NEHRP acceleration spectrum, the TARSCHTS computer simulation program was utilized. The results of the analysis showed that for the 10% probability of exceedance, the peak bedrock acceleration values ranged from 0.30 g to 0.40 g, and for the 40% exceedance probability the acceleration values ranged from 0.22 g to 0.17 g. The Ss 10% exceedance probability, calculated according to the spectral acceleration parameter, ranged from 0.67 g to 0.85 g and the spectral acceleration parameter S1 varied between 0.22 g–0.28 g. The Ss 40% exceedance probability, calculated according to the spectral acceleration parameter, ranged from 0.46 g to 0.38 g and the spectral acceleration parameter S1 varied from 0.12 g to 0.14 g.

scholarly journals GEOSTATISTICAL SEISMIC ANALYSIS AND HAZARD ASSESSMENT; UNITED ARAB EMIRATES

2018 ◽  
Vol XLII-3/W4 ◽  
pp. 29-36 ◽  
Author(s):  
D. Al-Dogom ◽  
K. Schuckma ◽  
R. Al-Ruzouq
Keyword(s):  
Seismic Hazard ◽  
United Arab Emirates ◽  
Geographical Information Systems ◽  
Seismic Analysis ◽  
Mitigation Strategies ◽  
Geographical Information ◽  
Arabian Plate ◽  
Spatial Pattern Analysis ◽  
Ground Acceleration ◽  
Very High

<p><strong>Abstract.</strong> Assessing and analyzing the spatial distribution of earthquake events aids in identifying the presence of clustering and reveals hot and cold spots across the study area. Combining the spatial analysis of earthquake events with other geographical and geophysical parameters leads to more understanding of the vulnerability of critical infrastructure and the demographics of the affected population. This study will use Geographical Information Systems (GIS) to examine the spatiotemporal occurrence of earthquake events throughout the Arabian plate and their effect on the United Arab Emirates (UAE). Spatial pattern analysis techniques, including Moran I and Getis–Ord Gi*, were applied to 115 years of earthquakes (1900&amp;ndash;2015) that have occurred throughout the Arabian plate. The directional distribution (standard deviational ellipse) of earthquake magnitudes was analyzed to determine the spatial characteristics and the directional tendency of the earthquakes throughout the Arabian plate. Afterword, geophysical parameters of UAE, specifically Peak Ground Acceleration (PGA), fault line distance, slope, soil type, and geology were ranked, weighted based on its contribution and combined using an Analytic Hierarchy Process (AHP) to identify and locate seismic hazard zones. The resulted Seismic Hazard Zonation Map (SHZM) was classified to five hazard zones ranging from very high to very low. It has been found that Fujairah city sited in the “very High” zone, Sharjah and Dubai cities located from “High” to moderate zones while Abu Dhabi city stands relatively far from seismic hot spots and major faults and placed in the low seismic hazard zone. The results of this study could help improve urban planning and emergency mitigation strategies in UAE.</p>

scholarly journals Ecological study and risk mapping of leishmaniasis in an endemic area of Brazil based on a geographical information systems approach

2011 ◽  
Vol 6 (1) ◽  
pp. 33 ◽  
Author(s):  
Alba Valéria Machado da Silva ◽  
Monica De Avelar Figueiredo Mafra Magalhães ◽  
Reginaldo Peçanha Brazil ◽  
João Carlos Araujo Carreira
Keyword(s):  
Information Systems ◽  
Geographical Information Systems ◽  
Endemic Area ◽  
Ecological Study ◽  
Systems Approach ◽  
Risk Mapping ◽  
Geographical Information

scholarly journals Linking geomorphic systems theory and remote sensing : a conceptual approach to Alpine landform detection (Reintal, Bavarian Alps, Germany)

2006 ◽  
Vol 61 (3) ◽  
pp. 181-190 ◽  
Author(s):  
N. J. Schneevoigt ◽  
L. Schrott
Keyword(s):  
Remote Sensing ◽  
Systems Theory ◽  
Geographical Information Systems ◽  
Systems Approach ◽  
Geographical Information ◽  
High Mountain ◽  
Conceptual Approach ◽  
Bavarian Alps ◽  
Digital Elevation ◽  
Process System

Abstract. Although the global importance of high mountains is increasingly being recognised, their geomorphic process System has not been completely understood as yet. While Systems theory and geographical information Systems (GIS) approaches have been long-serving in alpine geomorphology, the implementation of remote sensing (RS) tools is still rare. However, objeet-oriented image analysis lends itself to alpine applications, as it unites the benefits of RS and GIS. The Systems approach and the object-oriented classification of an ASTER satellite scene with digital elevation information are parallelized in the Reintal (Bavarian Alps). In a hierarchical, multiscale data segmentation and Classification, alpine landforms can be detected with high accuracy. Hence, RS techniques represent a valuable tool for high mountain geomorphology.

scholarly journals A strategy to address the task of seismic micro-zoning in landslide-prone areas

2013 ◽  
Vol 35 ◽  
pp. 23-35 ◽  
Author(s):  
G. Vessia ◽  
M. Parise ◽  
G. Tromba
Keyword(s):  
Peak Ground Acceleration ◽  
Geographical Information Systems ◽  
Clayey Soil ◽  
High Energy ◽  
Geographical Information ◽  
Ground Acceleration ◽  
Digital Elevation ◽  
Sliding Mechanism ◽  
Italian Apennines

Abstract. As concerns landslide prevention and mitigation policies at the urban scale, the ability of Geographical Information Systems (GIS) to combine multi-layered information with high precision enables technicians and researchers to devote efforts in managing multiple hazards, such as seismically induced instability in urbanized areas. As a matter of fact, many villages in the Italian Apennines, placed near high-energy seismic sources, are characterized by active sliding that are seasonally remobilized by rainfall. GIS tools can be useful whether accurate Digital Elevation Models (DEM) are available and detailed mechanical and hydraulic characterization of superficial deposits over significant portion of the urban territory is undertaken. Moreover, the classic methods for estimating the seismic-induced permanent displacements within natural slopes are drawn from the generalization of Newmark's method. Such method can be applied to planar sliding mechanism that can be considered still valid wherever shallow landslides are generated by an earthquake. The failure mechanism depends on the mechanical properties of the superficial deposits. In this paper, the town of Castelfranci (Campania, southern Italy) has been studied. This small town, hosting two thousand inhabitants, suffers from the seasonal reactivation of landslides in clayey soil deposits due to rainfall. Furthermore, the site is seismically classified by means of the peak ground acceleration (PGA) equal to 0.246 g with respect to a 475 yr return period. Several studies on the evolution of slopes have been undertaken at Castelfranci and maps have been drawn at the urban scale not taking into any account the seismic hazard. This paper shows possible seismically induced hazard scenarios within the Castelfranci municipal territory aimed at microzonation of level 2, by estimating the slope permanent displacements comparable to those caused by the strongest historical seismic event that hit this area: the 1980 Irpinia earthquake. To this aim, geotechnical characterization of local soils collected over the last 25 yr by local technicians have been used to predict possible permanent displacements by means of Newmark's sliding block approach. Two simplified relationships relating peak ground acceleration and Arias intensity to permanent displacements have been used and compared. Although similar results are drawn, the two analyses point out the most hazardous sectors of the Castelfranci urban area.

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