Analysis of Quetta-Ziarat earthquake of 29 October 2008 in Pakistan

Rafi, Zahid; Ahmed, Najeeb; Ur‐Rehman, Shafiq; Azeem, Tahir; el-aal, Abd el-aziz Khairy Abd

doi:10.1007/s12517-011-0485-2

Cited by 12 publications

(3 citation statements)

References 7 publications

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“…It is followed by building a seismotectonic source model and estimating the recurrence parameters and maximum predicted magnitude in each seismic source specified in this model [7]. Finally, an appropriate ground motion attenuation relationship is applied to estimate the seismic hazard [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Earthquake Hazard Assessment Studies in the State of Kuwait

Al-Mutairi

2022

GEOMATE

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This study addresses the first and most important step in measuring the level of seismic hazard in Kuwait. As a result of development, there has been a rise in urban growth leading to the establishment of massive structures and skyscrapers in Kuwait. Therefore, there is demand for seismic risk assessment and the creation of a single seismic code for the country. Consequently, the historical and instrumental data were compiled into seismic catalogs of Kuwait and the active Zagros Seismic Belt. The magnitudes have been unified, extraneous earthquakes removed, and the catalogs' entirety has been taken into account. A seismotectonic model for the Kuwait region has been built to minimize the epistemic uncertainties. The model functions by combining seismicity patterns and structural geological conditions. The probability of experiencing the largest predicted earthquake emerging from every seismic source was calculated together with the parameters set for recurrence. Furthermore, the creation of hazard maps required a suitable ground motion attenuation relation within a logic tree design. Considering recurrence intervals of 100, 475, 975, and 2475 years (corresponding to 39.3 percent, 10%, 5%, and 2%, accordingly, the likelihood of exceedance in 50 years), a probability-based technique is utilized in the study to construct hazard maps at the following 0, 0.1, 0.2, 0.5, 1, 2, 3 and 4 seconds. The maps of scaling hazard areas were created using a 0.2 ° x 0.2 ° spacing grid throughout Kuwait. The five regions of Kuwait (Kuwait City, Salmiya Area, Sabriya Area, Managish Area, and Um Gudair Area) have all implemented a consistent spectrum of hazards. The findings of this study plus the vulnerability index serve the essential features required to calculate Kuwait's seismic risk.

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Section: Introductionmentioning

confidence: 99%

Earthquake Hazard Assessment Studies in the State of Kuwait

Al-Mutairi

2022

GEOMATE

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“…The hazard can be assessed using probabilistic or deterministic seismic hazard approaches. In this study, the probabilistic seismic hazard assessment (PSHA) is chosen for performing the hazard analysis because it is widely considered as seismology's most valuable contribution to earthquake hazard assessment (Reiter 1990;Frankel 1995;Woo 1996;Giardini 1999;Bommer et al 2004;Deif et al 2009;El-Hussain et al 2010;Rafi et al 2013;Ur-Rehman et al 2013a, b). PSHA was first introduced by Cornell (1968), and since then has been widely adopted and modified (McGurie 1978;Bender and Perkins 1987).…”

Section: Introductionmentioning

confidence: 99%

Multi-seismotectonic models, present-day seismicity and seismic hazard assessment for Suez Canal and its surrounding area, Egypt

Eleraki

el-aal

Mostafa

2015

Bull Eng Geol Environ

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Suez Canal is the most important navigational water stream in the world. It separates the eastern part of the Nile Delta from northern Sinai and controls 40 % of ship movement in the world. There is also the new Suez Canal project, which is one of the most important new projects in Egypt. The purpose of this study is to assess seismic hazards at and around Suez Canal. The technique used in hazard estimation is the probabilistic seismic hazard approach (PSHA). Alternative seismotectonic source models were included in the hazard assessment to account for the epistemic uncertainty. Contour maps were produced for ground motion on rock for spectral periods 0.2, 0.5, 1 and 2 s, as well as Peak Ground Acceleration (PGA) for return periods of 75, 475, 975 and 2475 years (equivalent to 20, 10, 5 and 2 % probability of exceeding ground motion in 50 years, respectively). The Uniform Hazard Spectra (UHS) was also estimated for some cities inside the study area on rock for return periods of 75, 475, 975 and 2475 years. The results show that the highest hazard level is at the southeastern part of the study area with maximum expected spectral acceleration of 280.3 cm/s 2 (gal) at a spectral period of 0.2 s for a return period of 475 years. The results of this study can be used for seismic microzonation, seismic risk mitigation and for earthquake engineering purposes.

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“…Seismic hazard can be assessed using probabilistic seismic hazard approach (PSHA) and/or deterministic seismic hazard approach (DSHA). PSHA is considered as seismology's most valuable contribution to earthquake hazard assessment (Reiter, 1990;Frankel, 1995;Woo, 1996;Giardini, 1999;Bommer et al, 2004;Deif et al, 2009;El-Hussain et al, 2010;Rafi et al, 2013;Ur-Rehman et al, 2013a, b). It uses all the available historical and instrumental earthquake data to estimate the seismic hazard.…”

Section: Introductionmentioning

confidence: 99%

An extended stochastic method for seismic hazard estimation

el-aal

Eleraki

Mostafa

2015

Preprint

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Abstract. In this contribution, we developed an extended stochastic technique for seismic hazard assessment purposes. This technique depends on the hypothesis of stochastic technique of Boore (2003) "Simulation of ground motion using the stochastic method. Appl. Geophy. 160:635–676". The essential characteristics of extended stochastic technique are to obtain and simulate ground motion in order to minimize future earthquake consequences. The first step of this technique is defining the seismic sources which mostly affect the study area. Then, the maximum expected magnitude is defined for each of these seismic sources. It is followed by estimating the ground motion using an empirical attenuation relationship. Finally, the site amplification is implemented in calculating the peak ground acceleration (PGA) at each site of interest. We tested and applied this developed technique at Cairo, Suez, Port Said, Ismailia, Zagazig and Damietta cities to predict the ground motion. Also, it is applied at Cairo, Zagazig and Damietta cities to estimate the maximum peak ground acceleration at actual soil conditions. In addition, 0.5, 1, 5, 10 and 20 % damping median response spectra are estimated using the extended stochastic simulation technique. The calculated highest acceleration values at bedrock conditions are found at Suez city with a value of 44 cm s−2. However, these acceleration values decrease towards the north of the study area to reach 14.1 cm s−2 at Damietta city. This comes in agreement with the results of previous studies of seismic hazards in northern Egypt and is found to be comparable. This work can be used for seismic risk mitigation and earthquake engineering purposes.

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Analysis of Quetta-Ziarat earthquake of 29 October 2008 in Pakistan

Cited by 12 publications

References 7 publications

Earthquake Hazard Assessment Studies in the State of Kuwait

Earthquake Hazard Assessment Studies in the State of Kuwait

Multi-seismotectonic models, present-day seismicity and seismic hazard assessment for Suez Canal and its surrounding area, Egypt

An extended stochastic method for seismic hazard estimation

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