Seismic risk analysis of coastal area of Pakistan

Estimation of seismic hazard for the fast developing coastal area of Pakistan is carried out using deterministic and probabilistic approaches. On the basis of seismotectonics and geology, eleven faults are recognized in five seismic provinces as potential hazard sources. Maximum magnitude potential...

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Bibliographic Details
Published in:Acta seismologica sinica 2003-07, Vol.16 (4), p.382-394
Main Authors: Khan, Shahid A., Shah, M. Ali, Qaisar, M.
Format: Article
Language:English
Subjects:
Acceleration
Cities
Coastal areas
Coastal zone
Earthquakes
Hazards
Probabilistic methods
Probability theory
Risk
Risk analysis
Seismic activity
Seismic engineering
Seismic hazard
Seismic phenomena
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Summary:Estimation of seismic hazard for the fast developing coastal area of Pakistan is carried out using deterministic and probabilistic approaches. On the basis of seismotectonics and geology, eleven faults are recognized in five seismic provinces as potential hazard sources. Maximum magnitude potential for each of these sources is calculated. Peak ground acceleration (PGA) values at the seven coastal cities due to the maximum credible earthquake on the relevant source are also obtained. Cities of Gwadar and Ormara with acceleration values of 0.21g and 0.25g respectively fall in the high seismic risk area. Cities of Turbat and Karachi lie in low seismic risk area with acceleration values of less than 0.1g. The Probabilistic PGA maps with contour interval of 0.05g for 50 and 100 years return period with 90% probability of non-exceedance are also compiled.[PUBLICATION ABSTRACT]
ISSN:1000-9116
1674-4519
1993-1344
1867-8777
DOI:10.1007/s11589-003-0071-0