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Empirical fatality model for Indonesia based on a Bayesian approach

By
I. Wayan Sengara
I. Wayan Sengara
Civil and Environmental Engineering Faculty, Institut Teknologi Bandung, Lebak Siliwangi, Coblong, Bandung City, West Java 40132, Indonesia
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Made Suarjana
Made Suarjana
Civil and Environmental Engineering Faculty, Institut Teknologi Bandung, Lebak Siliwangi, Coblong, Bandung City, West Java 40132, Indonesia
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M. Addifa Yulman
M. Addifa Yulman
Civil and Environmental Engineering Faculty, Institut Teknologi Bandung, Lebak Siliwangi, Coblong, Bandung City, West Java 40132, Indonesia
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Hadi Gashemi
Hadi Gashemi
Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia
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Hyeuk Ryu
Hyeuk Ryu
Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia
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Published:
January 01, 2017

Abstract

An empirical fatality model for Indonesia has been developed by relating the macroseismic intensity to the fatality rate using compiled sub-district level fatality rate data and the numerically simulated ground-shaking intensity for four recent damaging events. The fatality rate data were compiled by collecting population and fatality statistics of the regions affected by the selected events. The ground-shaking intensity was numerically estimated by incorporating a finite-fault model of each event and local site conditions approximated by topographically based site amplifications. The macroseismic intensity distribution of each event was generated using ShakeMap software, combining a selected pair of ground motion prediction equations and ground motion to intensity conversion equations. The developed fatality model is a Bayesian generalized linear model in which the fatality rate is assumed to follow a mixture of Bernoulli and gamma distributions. The model was validated by calculating the fatalities in past events from the EXPO-CAT catalogue and comparing the estimates with the EXPO-CAT fatality records. Although the model can provide an estimate of the range of fatalities for future events, it needs ongoing refinement by the incorporation of additional fatality rate data from past and future events.

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Contents

Geological Society, London, Special Publications

Geohazards in Indonesia: Earth Science for Disaster Risk Reduction

P. R. Cummins
P. R. Cummins
Australian National University, Australia
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I. Meilano
I. Meilano
Bandung Institute of Technology, Indonesia
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The Geological Society of London
Volume
441
ISBN electronic:
9781862399709
Publication date:
January 01, 2017

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