Turkey-Adjusted NGA-W1 Horizontal Ground Motion Prediction Models

Gülerce, Zeynep
Abrahamson, Norman A.
The objective of this paper is to evaluate the differences between the Next Generation Attenuation: West-1 (NGA-W1) ground motion prediction models (GMPEs) and the Turkish strong ground motion data set and to modify the required pieces of the NGA-W1 models for applicability in Turkey. A comparison data set is compiled by including strong motions from earthquakes that occurred in Turkey and earthquake metadata of ground motions consistent with the NGA-W1 database. Random-effects regression is employed and plots of the residuals are used to evaluate the differences in magnitude, distance, and site amplification scaling. Incompatibilities between the NGA-W1 GMPEs and Turkish data set in small-to-moderate magnitude, large distance, and site effects scaling are encountered. The NGA-W1 GMPEs are modified for the misfit between the actual ground motions and the model predictions using adjustments functions. Turkey-adjusted NGA-W1 models are compatible with the regional strong ground motion characteristics and preserve the well-constrained features of the global models.

Citation Formats
Z. Gülerce, B. KARGIOĞLU, and N. A. Abrahamson, “Turkey-Adjusted NGA-W1 Horizontal Ground Motion Prediction Models,” EARTHQUAKE SPECTRA, vol. 32, no. 1, pp. 75–100, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39473.