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Can a creeping segment become a monitor before destructive major earthquakes?

Author

Listed:
  • H. Kutoglu
  • K. Gormus
  • T. Deguchi
  • E. Koksal
  • H. Kemaldere
  • O. Gundogdu

Abstract

There are few places in the world to monitor aseismic creep. One of them is the Ismetpasa segment of the North Anatolian Fault. The observations in the Ismetpasa showed that the creep rate progressively decreased along the 40 years before the 1999 Kocaeli-Golcuk (Mw = 7.6) earthquake and then started increasing. This phenomenon might be a systematic of the creeping segments. If it is the case, this behavior can be utilized for early warning before the expected major earthquake in the Marmara Sea. In this study, the creep rate of the segment has been studied by GPS and InSAR technologies. The results showed that the rate has decreased to 1.3 cm a year. This result might be an indication of stress starting increase. If the segment retains the decreasing trend and it is ceased by a major earthquake, it would be a proof of the relationship between the creep process and the earthquakes. Then, the creep process might be utilized for early warning. Copyright Springer Science+Business Media Dordrecht 2013

Suggested Citation

  • H. Kutoglu & K. Gormus & T. Deguchi & E. Koksal & H. Kemaldere & O. Gundogdu, 2013. "Can a creeping segment become a monitor before destructive major earthquakes?," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 65(3), pages 2161-2173, February.
    • Handle: RePEc:spr:nathaz:v:65:y:2013:i:3:p:2161-2173
    DOI: 10.1007/s11069-012-0466-0
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