Open AccessSelection of earthquake ground motion accelerograms for the continental margin of Southeastern Brazil
Author(s) -
Cristian Yair Soriano Camelo,
Samuel Felipe Mollepaza Tarazona,
Marcílio de Almeida,
Ricardo Garske Borges
Publication year - 2021
Publication title -
dyna
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.164
H-Index - 18
eISSN - 2346-2183
pISSN - 0012-7353
DOI - 10.15446/dyna.v88n217.93068
Subject(s) - peak ground acceleration , intraplate earthquake , seismology , geology , seismic hazard , spectral acceleration , induced seismicity , ground motion , response spectrum , submarine pipeline , seismic microzonation , earthquake simulation , margin (machine learning) , strong ground motion , acceleration , tectonics , geotechnical engineering , computer science , physics , classical mechanics , machine learning
Brazil is in an intraplate area of low to moderate seismicity, this means that few or no records of strong ground motions are available. Part of the site response analysis and seismic design of structures require the use of acceleration time-histories compatible with a specified target response spectrum. This study aims to utilize methodologies based on the use of existing earthquake records from a well-known database and synthetic accelerograms to obtain ground motions representative of the Brazilian Southeast Region, particularly in the offshore Campos Basin. Information from a probabilistic seismic hazard assessment performed in the interest area was employed as input to the methodologies applied in terms of target response spectrum and the dominant earthquake scenarios. Besides, the acceleration time-histories of two relatively recent earthquakes that occurred in the Brazilian Southeast were used to apply one of the approaches to obtain a synthetic spectrum compatible accelerogram.