Topographic effects observed at Amatrice hill during the 2016-2017 Central Italy seismic sequence

作     者：Gerardo Grelle Laura Bonito Maresca Rosalba Silvia Iacurto Claudia Madiai Paola Revellino Giuseppe Sappa Gerardo Grelle;Laura Bonito;Maresca Rosalba;Silvia Iacurto;Claudia Madiai;Paola Revellino;Giuseppe Sappa

作者机构：Department of CivilBuilding and Environmental EngineeringSapienza University of RomeItaly Department of Sciences and TechnologiesUniversity of SannioItaly Department of Civil and Environmental EngineeringUniversity of FlorenceItaly 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2021年第20卷第1期

页      面：63-78页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0815[工学-水利工程] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Centro per la Microzonazione Sismica e le sue Applicazioni Centro per la Microzonazione Sismica e le sue Applicazioni? Council of Ministers Council of Ministers ? National Order of Geologists Dipartimento della Protezione Civile, Presidenza del Consiglio dei Ministri, DPC 

主　　题：topographic effects standard spectra ratio(SSR) horizontal and vertical spectral ratio(HVSR) directional effects 

摘      要：The estimate of seismic site effects by experimental approaches is based on different assumptions aimed at simplifying the complex actual site conditions and related ***,the reliability of the results can increase if the experimental data is focused on quite strong seismic sequences and the on-site acquisition of a large number of signals is deemed strategic for the assessment of the expected *** on these considerations,the ground motion at the Red Zone sector of Amatrice hill,violently struck by the 2016-2017 Central Italy seismic sequence,was analyzed via an observational approach.A large set of weak motions(moment magnitude Mw 2.5-3.9)was analyzed in this study by means of standard(SSR)and horizontal to vertical(HVSR)spectral ratio *** results from the experimental analysis of the site effects by using weak motion and noise signals show a significant amplification at the top of Amatrice hill with a remarkable polarization of the motion and changes in spectral shapes according to the topographic setting of the relief.