A simulation-based regional ground-motion model for Eastern Türkiye

SANDIKKAYA M. A., Kale Ö., Akkar S., Yenier E.

Bulletin of Earthquake Engineering, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Publication Date: 2024
  • Doi Number: 10.1007/s10518-024-02058-w
  • Journal Name: Bulletin of Earthquake Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Agricultural & Environmental Science Database, Aquatic Science & Fisheries Abstracts (ASFA), Compendex, Geobase, INSPEC, Civil Engineering Abstracts
  • Keywords: Ground-motion model, Regional effects, Seismic hazard
  • TED University Affiliated: Yes

Abstract

We developed a data-driven and simulation-based ground motion model (GMM) for Eastern Türkiye as a follow up of the Sandıkkaya et al. (Bull Earthq Eng, 2023) paper, which proposes a regional GMM for Western Türkiye. This way, we complete the region-specific ground-motion models for the entire country. As in the case of Sandıkkaya et al. (Bull Earthq Eng, 2023) paper, we investigated the influence of regional stress parameter, geometrical spreading,and anelastic attenuation in Eastern Türkiye for ground-motion prediction. The proposed model was developed for estimating the geometric means of PGA, PGV and 5%-damped horizontal spectral acceleration up to 10 s. The model is usable for earthquake scenarios of magnitudes between 3.5 and 8, and the path effects are consistent for distances up to 400 km. The magnitude-dependent partially non-ergodic sigma is computed as part of the model. In the paper, we also addressed the differences in locality residuals and anelastic attenuation rates for each event cluster that are determined from the seismotectonic features of the region, event sequences and residual distributions.