Multi-disciplinary earthquake researches in Western Turkey: Hints to select sites to study geochemical transients associated to seismicity

• Autorzy: Inan S. , Ertekin K. , Seyis C. , Simsek S , Kulak F. , Dikbas A. , Tan O. , Ergintav S. , Cakmak R. , Yoruk A. , Cergel M. , Yakan H. , Karakus H. , Saatcilar R. , Akcig Z. , Iravul Y. , Tuzel B.
• Języki publikacji: EN

Abstrakty

EN

Warm and hot spring water as well as soil gas radon release patterns have been monitored in the Aegean Extensional Province of Western Turkey, alongside regional seismic events, providing a multidisciplinary approach. In the study period of 20 months, seven moderate earthquakes with ML between 4.0 and 4.7 occurred in this seismically very active region; two earthquakes with magnitude 5.0 also occurred near the study area. Seismic monitoring showed no foreshock activity. By contrast, hydro-geochemical anomalies were found prior to these seismic events, each lasting for weeks. The anomalies occurred foremost in conjunction with dip-slip events and seem to support the dilatancy and water diffusion hypothesis. Increased soil gas radon release was recorded before earthquakes associated with strike-slip faults, but no soil radon anomalies were seen before earthquakes associated with dip-slip faults. Geochemical anomalies were also noticeably absent at some springs throughout the postulated deformation zones of impending earthquakes. The reason for this discrepancy might be due to stress/strain anisotropies.

Słowa kluczowe

EN

seismically activated geochemical transients; geochemical monitoring sensitive sites; Aegean Extensional Province; Turkey

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2010
• Tom: Vol. 58, no. 5
• Strony: 767--813
• Opis fizyczny: Bibliogr. 90 poz.

Twórcy

autor

Inan S.

autor

Ertekin K.

autor

Seyis C.

autor

Simsek S

autor

Kulak F.

autor

Dikbas A.

autor

Tan O.

autor

Ergintav S.

autor

Cakmak R.

autor

Yoruk A.

autor

Cergel M.

autor

Yakan H.

autor

Karakus H.

autor

Saatcilar R.

autor

Akcig Z.

autor

Iravul Y.

autor

Tuzel B.

• TÜBITAK Marmara Research Center, Earth and Marine Sciences Institute, Gebze-Kocaeli, Turkey,

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