Development of the 2017 national seismic hazard maps of Indonesia

Indonesia is one of the most seismically active countries in the world, and its large, vulnerable population makes reliable seismic hazard assessment an urgent priority. In 2016, the Indonesian Ministry of Public Works and Housing established a team of earthquake scientists and engineers tasked with...

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Bibliographic Details
Published in:Earthquake spectra 2020-10, Vol.36 (1), p.112-136
Main Authors: Irsyam, Masyhur, Cummins, Phil R, Asrurifak, M, Faizal, Lutfi, Natawidjaja, Danny Hilman, Widiyantoro, Sri, Meilano, Irwan, Triyoso, Wahyu, Rudiyanto, Ariska, Hidayati, Sri, Ridwan, M, Nuraini, Rahma Hanifa, Sayahbana, Arifan Jaya
Format: Article
Language:English
Subjects:
active faults
Asia
design
earthquake prediction
earthquakes
equations
Far East
faults
focus
geologic hazards
ground motion
Indonesia
mapping
natural hazards
risk assessment
seismic response
seismic risk
Seismology
TRSHMI2010
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Summary:Indonesia is one of the most seismically active countries in the world, and its large, vulnerable population makes reliable seismic hazard assessment an urgent priority. In 2016, the Indonesian Ministry of Public Works and Housing established a team of earthquake scientists and engineers tasked with improving the input data available for revising the national seismic hazard map. They compiled results of recent active fault studies using geological, geophysical, and geodetic observations, as well as a new comprehensive earthquake catalog including hypocenters relocated in a three-dimensional velocity model. Seismic hazard analysis was undertaken using recently developed ground motion prediction equations (GMPEs), and logic trees for the inclusion of epistemic uncertainty associated with different choices for GMPEs and earthquake recurrence models. The new seismic hazard maps establish the importance of active faults and intraslab seismicity, as well as the subduction megathrust, in determining the level of seismic hazard, especially in onshore, populated areas. The new Indonesian hazard maps will be used to update national standards for design of earthquake-resilient buildings and infrastructure.
ISSN:8755-2930
1944-8201
DOI:10.1177/8755293020951206