A study of residuals for strong ground motions in Adapazari basin, NW Turkey, by ground motion prediction equations (GMPEs)

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Ulutaş E., Coruk Ö., Karakaş A.

STUDIA GEOPHYSICA ET GEODAETICA, cilt.55, ss.213-240, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s11200-011-0013-6
  • Dergi Adı: STUDIA GEOPHYSICA ET GEODAETICA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.213-240
  • Anahtar Kelimeler: site amplification, ground motion prediction equations, spectral acceleration, Kocaeli earthquake, Duzce earthquake, EMPIRICAL ATTENUATION RELATIONSHIP, PEAK HORIZONTAL ACCELERATION, EARTHQUAKE, VELOCITY, RECORDS
  • Kocaeli Üniversitesi Adresli: Evet

Özet

The city of AdapazarA +/- - located in the Marmara Region of northwest Turkey - is situated on a deep sedimentary basin and was the city most heavily damaged by the strong ground motion of the 17 August 1999 Kocaeli earthquake (moment magnitude M(w) = 7.4). This study determines site amplifications of the attenuation relationships for shallow earthquakes in the AdapazarA +/- basin by using the previous ground motion prediction equations (GMPEs) and the traditional spectral ratio method. The site amplifications are determined empirically by averaging the residuals between the observed and predicted peak ground acceleration (PGA) and spectral acceleration (SA) values for various periods. Residuals are significantly correlated with the known characteristics of geological units. A new attenuation model has also been developed for 5% damped spectral acceleration to determine the dependence of strong ground motions on frequency.