Physics-based ground motion simulation of the 2020 Samos earthquake

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2022-9

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Urhan, Yiğit

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In this thesis, low-frequency ground motions of the 2020 Samos Earthquake at se lected ground motion stations are simulated using the spectral element method. For this purpose, rigorous mathematical derivation of the classical wave equation is pre sented first. Next, the spatiotemporal discretisation scheme involved in finite element and spectral element methods are derived. Then, a velocity model is constructed based on the velocity profiles provided by AFAD. For the source model, moment tensor solution of the Samos Earthquake is utilised with a Gaussian source time func tion, since the event is located at far distances from the studied stations admitting point source model. Finally, comparison of synthetic records with the observed data is presented and then station-wise comparison of ground motion parameters is made.

Subject Keywords

Spectral element method, Finite element method, Physics-based, Deterministic, Ground motion simulations, Elastic wave propagation

URI

https://hdl.handle.net/11511/99798

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Y. Urhan, “Physics-based ground motion simulation of the 2020 Samos earthquake,” M.S. - Master of Science, Middle East Technical University, 2022.