Evidence of Low-Frequency Amplification in the City of L'Aquila, Central Italy, through a Multidisciplinary Approach Including Strong- and Weak-Motion Data, Ambient Noise, and Numerical Modeling

摘要

Recent accelerometric recordings of earthquakes with moderate and intermediate magnitude (4.0 < M_L < 5.9), at both local and regional distances, show a significant ground-motion amplification effect at low frequencies (0.6 Hz) in the city of L’Aquila (central Italy). The effect involves very long durations characterized by low frequencies in the coda.