Seismicity Based Maximum Magnitude Estimation of Subduction Earthquakes in Peru-Reference-Cited by-同舟云学术

Seismicity Based Maximum Magnitude Estimation of Subduction Earthquakes in Peru

Published:2023-06-01 Issue:4 Volume:18 Page:308-318
ISSN:1883-8030
Container-title:Journal of Disaster Research
language:en
Short-container-title:J. Disaster Res.

Author:

Tarazona Juan Carlos¹^ORCID,Aguilar Zenon¹^ORCID,Pulido Nelson²,Gonzales Carlos¹^ORCID,Lazares Fernando¹^ORCID,Miyake Hiroe³

Affiliation:

1. Japan Peru Center for Earthquake Engineering Research and Disaster Mitigation (CISMID), National University of Engineering (UNI), Av. Tupac Amaru 1150, Lima 15333, Peru

2. National Research Institute for Earth Science and Disaster Resilience (NIED), Tsukuba, Japan

3. Earthquake Research Institute, The University of Tokyo, Tokyo, Japan

Abstract

In seismic design, intensity parameters that represent seismic demand are commonly used. A probabilistic seismic hazard assessment is an accurate way of assessing seismic demand, based on a set of parameters that represent the seismicity of a region. However, because some regions lack sufficient information, the selection of these parameters can be controversial. In Peru, selecting a maximum earthquake magnitude (Mmax) for regional seismic hazard assessments has proven to be a challenging task due to the limited available information concerning of large-magnitude events. This study evaluated the Mmax for subduction earthquakes using scaling relationships, empirical evidence, and the extreme value statistics (Kijko and Bayesian) approach. The seismic catalog was updated to February 2022 and divided into 19 subduction seismic sources (5 interface and 14 intraslab). The results showed that the obtained Mmax are within the range of Mw 8.7–9.0 for the interface and Mw 7.6–8.1 for the intraslab sources, which unlike the Mmax values established in previous regional seismic hazard assessments, are more consistent with the historical and instrumental seismicity and rupture models.

Funder

Science and Technology Research Partnership for Sustainable Development

Publisher

Fuji Technology Press Ltd.

Subject

Engineering (miscellaneous),Safety, Risk, Reliability and Quality

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