Seismic hazard in the Istanbul metropolitan area: A preliminary re-evaluation
Journal of Earthquake Engineering
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Abstract
In 1999, two destructive earthquakes (M7.4 Kocaeli and M7.2 Duzce) occurred in the north west of Turkey and resulted in major stress-drops on the western segment of the North Anatolian Fault system where it continues under the Marmara Sea. These undersea fault segments were recently explored using bathymetric and reflection surveys. These recent findings helped to reshape the seismotectonic environment of the Marmara basin, which is a perplexing tectonic domain. Based on collected new information, seismic hazard of the Marmara region, particularly Istanbul Metropolitan Area and its vicinity, were re-examined using a probabilistic approach. Two seismic source and alternate recurrence models combined with various indigenous and foreign attenuation relationships were adapted within a logic tree formulation to quantify and project the regional exposure on a set of hazard maps. The hazard maps show the peak horizontal ground acceleration and spectral acceleration at 1.0 s. These acceleration levels were computed for 2 and 10 % probabilities of transcendence in 50 years.
Suggested Citation
Kalkan, E., Gulkan, P., Ozturk, N., and Çelebi, M., 2008, Seismic hazard in the Istanbul metropolitan area: A preliminary re-evaluation: Journal of Earthquake Engineering, v. 12, no. SUPPL. 2, p. 151-164, https://doi.org/10.1080/13632460802013925.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Seismic hazard in the Istanbul metropolitan area: A preliminary re-evaluation |
| Series title | Journal of Earthquake Engineering |
| DOI | 10.1080/13632460802013925 |
| Volume | 12 |
| Issue | SUPPL. 2 |
| Publication Date | May 21, 2008 |
| Year Published | 2008 |
| Language | English |
| Publisher | Taylor and Francis |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Earthquake Engineering |
| First page | 151 |
| Last page | 164 |