Development of Nationwide Vs30 Map and Calibrated Conversion Table for Indonesia using Automated Topographical Classification

Masyhur Irsyam; Muhammad Asrurifak; Reguel Mikhail; In In Wahdiny; Siska Rustiani; Munirwansyah Munirwansyah

doi:10.5614/j.eng.technol.sci.2017.49.4.3

Authors

Masyhur Irsyam Geotechnical Engineering Research Group, Faculty of Civil and Enviromental Engineering, Institut Teknologi Bandung,
Muhammad Asrurifak Research Center for Disaster Mitigation, Institut Teknologi Bandung,
Reguel Mikhail Research Center for Disaster Mitigation, Institut Teknologi Bandung
In In Wahdiny Research Center for Disaster Mitigation, Institut Teknologi Bandung
Siska Rustiani University of Parahyangan
Munirwansyah Munirwansyah University of Syiah Kuala

DOI:

https://doi.org/10.5614/j.eng.technol.sci.2017.49.4.3

Keywords:

automated topographical classification, conversion, seismic hazard maps, standard penetration test, Vs30.

Abstract

A nationwide Vs₃₀ map for Indonesia was developed based on automated topographic classification from 90-m grid digital elevation data and their correlation with Vs₃₀. Automated topographic classification has been proposed by Iwahashi and Pike (2007) and a procedure to convert topographic class into Vs₃₀ maps has been developed by Imamura and Furuta (2015) based on Vs data from J-SHIS (Japan Seismic Hazard Information System). In order to be suitable for Indonesia, calibration work according to Imamura and Furuta's procedure should be conducted since the geotechnical conditions in Japan may not be the same as in Indonesia. This paper presents adjustment of the Vs₃₀ correlation by Imamura and Furuta to convert topographic class into Vs₃₀ and construct a Vs₃₀ map of Indonesia. This correlation was calibrated by using Vs data from BMKG (Indonesian Agency for Meteorological, Climatological, and Geophysics) as well as standard penetration test logs that were collected by the authors. Utilization of local field measurement data will certainly enhance the reliability of the Vs₃₀ map. The developed nationwide Vs₃₀ map will be very useful for disaster mitigation programs and for preliminary design of earthquake resistant buildings and infrastructure in Indonesia.

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Author Biography

Masyhur Irsyam, Geotechnical Engineering Research Group, Faculty of Civil and Enviromental Engineering, Institut Teknologi Bandung,

Chairman of the Group of Engineering Expertise Geotechnical - Civil Engineering Department of ITB

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Chairman of the Research Center for Disaster Mitigation, Institut Teknologi Bandung (PPMB-ITB)

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