Data/hora: 09/06/2024 13:42:24

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Gas and seismicity within the Istanbul seismic gap
Autores: | Geli, Louis; Henry, P.; Grall, Celine; Tary, Jean-baptiste; Lomax, A.; Batsi, Evangelia; Riboulot, Vincent; Cros, Estelle; Gurbuz, C.; Isik, S. E.; Sengor, A. M. C.; Le Pichon, X.; Ruffine, Livio; Dupre, Stephanie; Thomas, Yannick; Kalafat, D.; Bayrakci, G.; Coutellier, Q.; Regnier, Thibaut; Westbrook, Graham; Saritas, H.; Cifci, G.; Cagatay, M. N.; Ozeren, M. S.; Gorur, N.; Tryon, M.; Bohnhoff, M.; Gasperini, L.; Klingelhoefer, Frauke; Scalabrin, Carla; Augustin, Jean-marie; Embriaco, D.; Marinaro, G.; Frugoni, F.; Monna, S.; Etiope, G.; Favali, P.; Becel, A.
Data: | 2018-05
Ano: | 2018
Resumo: | Understanding micro-seismicity is a critical question for earthquake hazard assessment. Since the devastating earthquakes of Izmit and Duzce in 1999, the seismicity along the submerged section of North Anatolian Fault within the Sea of Marmara (comprising the “Istanbul seismic gap”) has been extensively studied in order to infer its mechanical behaviour (creeping vs locked). So far, the seismicity has been interpreted only in terms of being tectonic-driven, although the Main Marmara Fault (MMF) is known to strike across multiple hydrocarbon gas sources. Here, we show that a large number of the aftershocks that followed the M 5.1 earthquake of July, 25th 2011 in the western Sea of Marmara, occurred within a zone of gas overpressuring in the 1.5–5 km depth range, from where pressurized gas is expected to migrate along the MMF, up to the surface sediment layers. Hence, gas-related processes should also be considered for a complete interpretation of the micro-seismicity (~M &lt; 3) within the Istanbul offshore domain.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00439/55072/56500.pdf

https://archimer.ifremer.fr/doc/00439/55072/56501.pdf

DOI:10.1038/s41598-018-23536-7

https://archimer.ifremer.fr/doc/00439/55072/

Editor: | Nature Publishing Group
Relação: | info:eu-repo/grantAgreement/EC/FP7/308417/EU//MARSITE
Formato: | application/pdf
Fonte: | Scientific Reports (2045-2322) (Nature Publishing Group), 2018-05 , Vol. 8 , N. 1 , P. 6819 (11p.)

Fonte:

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