Citation

Aulady MFN, Fujimi T. Jamba 2019; 11(1): e756.

Affiliation

Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan.

Copyright

(Copyright © 2019, African Centre for Disaster Studies, North-West University)

DOI

10.4102/jamba.v11i1.756

PMID

31308882

PMCID

PMC6620499

Abstract

Bantul regency in 2006 had experienced considerable earthquake and suffered many casualties. The factors such as high population density and lack of seismic design of residential buildings in Bantul besides its location in a high seismic region have increased its vulnerability to earthquake disasters that can lead to a widespread economic losses and casualties. This research aims to capture earthquake risk in Bantul towards economic losses and casualties by using risk curve. Risk curve is a combination of several sources from literatures containing hazard curve and vulnerability curve together with exposure. The result showed that the expected economic loss in 50 years for residential building is $647.22 million; however, the highest value of economic losses shows the value up to $7600m which occurs in earthquake of 7.15 M_W scale. The same worst-case scenario caused the casualties up to 49 000 people at night-time and 15 000 people at daytime. The result established that confined masonry building type conduces the highest value of economic losses and timber frame building shows the highest vulnerability to the earthquake disaster than other building types. Furthermore, in order to reduce the risk, we applied the hypothetical policy to build a simple earthquake-resistant house called Simple Instant Healthy House. The result indicates that this mitigation policy can effectively reduce both economic losses and casualties.

Language: en

Keywords

Bantul regency; casualties; economic losses; hypothetical policy; risk curve; seismic vulnerability