Variabilities of ground motion in 2023 M_w 7.8 Pazarcık earthquake in Turkey and 2008 M_w 7.9 Wenchuan earthquake in China.

ABSTRACT: Both the 2023 M_w 7.8 Pazarcık earthquake (strike-slip fault) in Turkey, and the 2008 M_w 7.9 Wenchuan earthquake (reverse-slip fault) in China occurred on the Eurasian seismic belt, with comparable moment magnitudes. This study investigates the ground-motion characteristics of both earthquakes, using ground motion intensity measures (IMs), including peak ground accelerations (PGA), peak ground velocities (PGV), pseudospectral accelerations (PSAs) at T = 0.2-5.0 s, 5-95% significant duration, Arias intensity (I_a) and Newmark displacement. The Pazarcık earthquake shows negative between-event residuals (δB_e) at T < 0.2 s and positive δB_e at T > 0.2 s, indicating source effects in BSSA14 model over- and under- prediction respectively. The W

SUBMITTER: Xu P 

PROVIDER: S-EPMC12356865 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature