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Peak Ground Acceleration on Bedrock using Probability Seismic Hazard Analysis methods for Bandung city
Anggun Mayang Sari (a*), Arifan Jaya Syahbana(a), Afnindar Fakhrurrozi(a)

(a) Research Center For Technology, Indonesian Institute of Sciences (LIPI), Jl. Sangkuriang, Bandung 40135,Indonesia
*anggunmayangsari[at]gmail.com


Abstract

As one of the largest cities in Indonesia, Bandung city consists of dense populations that geologically surrounded by earthquake hazard. Rapid structural-building and infrastructure facilities development forced the local government to put a concern about the dynamic impact. Therefore, a study on Peak Ground Acceleration (PGA) bedrock to analyse seismic hazard is a necessity. This study used the latest updated seismic sources data to model seismic ground motion to particular location. Here, Probability Seismic Hazard Analysis (PSHA) methods were applied using EZ-FRisk and OpenQuake software. These two methods developed to show some variety models of peak ground acceleration value on bedrock. Ez-FRisk models used randomly 9 points locations, while OpenQuake used gridded points to the whole Bandung city to generate PGA analysis. As a result, PGA bedrock using EZ-FRisk software ranged between 0,48-0,62g, while OpenQuake showed 0,46-0,63g. These results validated using Indonesian Hazard Map 2017 using PGA on 2475 years return period, represented similar values about 0.50-0.60g. In order to provide spatial information, these results visualised using Geographic Information System (GIS) application. Furthermore, this study expected to give contribution on scientific information for the development planning, especially for designing earthquake resistant buildings.

Keywords: PGA Bedrock; PSHA; EZ-Frisk; OpenQuake; GIS

Topic: Physics

Link: https://ifory.id/abstract/DHZ8jfnbVkmw

Conference: Mathematics, Science and Computer Science Education International Seminar (MSCEIS 2019)

Plain Format | Corresponding Author (Anggun Mayang Sari)

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