Probabilistic Seismic Hazard Analysis for Yemen
A stochastic-event probabilistic seismic hazard model, which can be used further for estimates of seismic loss and seismic risk analysis, has been developed for the territory of Yemen. An updated composite earthquake catalogue has been compiled using the databases from two basic sources and several...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Geophysics |
| Online Access: | http://dx.doi.org/10.1155/2012/304235 |
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| _version_ | 1849306844803104768 |
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| author | Rakesh Mohindra Anand K. S. Nair Sushil Gupta Ujjwal Sur Vladimir Sokolov |
| author_facet | Rakesh Mohindra Anand K. S. Nair Sushil Gupta Ujjwal Sur Vladimir Sokolov |
| author_sort | Rakesh Mohindra |
| collection | DOAJ |
| description | A stochastic-event probabilistic seismic hazard model, which can be used further for estimates of seismic loss and seismic risk analysis, has been developed for the territory of Yemen. An updated composite earthquake catalogue has been compiled using the databases from two basic sources and several research publications. The spatial distribution of earthquakes from the catalogue was used to define and characterize the regional earthquake source zones for Yemen. To capture all possible scenarios in the seismic hazard model, a stochastic event set has been created consisting of 15,986 events generated from 1,583 fault segments in the delineated seismic source zones. Distribution of horizontal peak ground acceleration (PGA) was calculated for all stochastic events considering epistemic uncertainty in ground-motion modeling using three suitable ground motion-prediction relationships, which were applied with equal weight. The probabilistic seismic hazard maps were created showing PGA and MSK seismic intensity at 10% and 50% probability of exceedance in 50 years, considering local soil site conditions. The resulting PGA for 10% probability of exceedance in 50 years (return period 475 years) ranges from 0.2 g to 0.3 g in western Yemen and generally is less than 0.05 g across central and eastern Yemen. The largest contributors to Yemen’s seismic hazard are the events from the West Arabian Shield seismic zone. |
| format | Article |
| id | doaj-art-1ebfea5e9ca043e9be1b6f16901bdccd |
| institution | Kabale University |
| issn | 1687-885X 1687-8868 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Geophysics |
| spelling | doaj-art-1ebfea5e9ca043e9be1b6f16901bdccd2025-08-20T03:54:57ZengWileyInternational Journal of Geophysics1687-885X1687-88682012-01-01201210.1155/2012/304235304235Probabilistic Seismic Hazard Analysis for YemenRakesh Mohindra0Anand K. S. Nair1Sushil Gupta2Ujjwal Sur3Vladimir Sokolov4Risk Modeling & Insurance Group, RMSI Pvt. Ltd., A-7 Sector 16, Noida 201 301, IndiaRisk Modeling & Insurance Group, RMSI Pvt. Ltd., A-7 Sector 16, Noida 201 301, IndiaRisk Modeling & Insurance Group, RMSI Pvt. Ltd., A-7 Sector 16, Noida 201 301, IndiaRisk Modeling & Insurance Group, RMSI Pvt. Ltd., A-7 Sector 16, Noida 201 301, IndiaGeophysical Institute, Karlsruhe Institute of Technology (KIT), Karlsruhe, GermanyA stochastic-event probabilistic seismic hazard model, which can be used further for estimates of seismic loss and seismic risk analysis, has been developed for the territory of Yemen. An updated composite earthquake catalogue has been compiled using the databases from two basic sources and several research publications. The spatial distribution of earthquakes from the catalogue was used to define and characterize the regional earthquake source zones for Yemen. To capture all possible scenarios in the seismic hazard model, a stochastic event set has been created consisting of 15,986 events generated from 1,583 fault segments in the delineated seismic source zones. Distribution of horizontal peak ground acceleration (PGA) was calculated for all stochastic events considering epistemic uncertainty in ground-motion modeling using three suitable ground motion-prediction relationships, which were applied with equal weight. The probabilistic seismic hazard maps were created showing PGA and MSK seismic intensity at 10% and 50% probability of exceedance in 50 years, considering local soil site conditions. The resulting PGA for 10% probability of exceedance in 50 years (return period 475 years) ranges from 0.2 g to 0.3 g in western Yemen and generally is less than 0.05 g across central and eastern Yemen. The largest contributors to Yemen’s seismic hazard are the events from the West Arabian Shield seismic zone.http://dx.doi.org/10.1155/2012/304235 |
| spellingShingle | Rakesh Mohindra Anand K. S. Nair Sushil Gupta Ujjwal Sur Vladimir Sokolov Probabilistic Seismic Hazard Analysis for Yemen International Journal of Geophysics |
| title | Probabilistic Seismic Hazard Analysis for Yemen |
| title_full | Probabilistic Seismic Hazard Analysis for Yemen |
| title_fullStr | Probabilistic Seismic Hazard Analysis for Yemen |
| title_full_unstemmed | Probabilistic Seismic Hazard Analysis for Yemen |
| title_short | Probabilistic Seismic Hazard Analysis for Yemen |
| title_sort | probabilistic seismic hazard analysis for yemen |
| url | http://dx.doi.org/10.1155/2012/304235 |
| work_keys_str_mv | AT rakeshmohindra probabilisticseismichazardanalysisforyemen AT anandksnair probabilisticseismichazardanalysisforyemen AT sushilgupta probabilisticseismichazardanalysisforyemen AT ujjwalsur probabilisticseismichazardanalysisforyemen AT vladimirsokolov probabilisticseismichazardanalysisforyemen |