Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake

East Malaysia has witnessed an increase in low to moderate seismic activities due to a few active fault lines. While damaging earthquakes are fortunately rare, from historical records ranging between 1874 and 2014, the region already experienced devastating earthquake with a magnitude MW 5.2 in Sara...

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Main Author:	Harith, Noor Sheena Herayani
Format:	Thesis
Language:	English
Published:	2016
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/78302/1/NoorSheenaHerayaniPFKA2016.pdf
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id	my-utm-ep.78302
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spelling	my-utm-ep.783022018-08-12T03:49:04Z Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake 2016-01 Harith, Noor Sheena Herayani TA Engineering (General). Civil engineering (General) East Malaysia has witnessed an increase in low to moderate seismic activities due to a few active fault lines. While damaging earthquakes are fortunately rare, from historical records ranging between 1874 and 2014, the region already experienced devastating earthquake with a magnitude MW 5.2 in Sarawak, MW 5.8 in Lahad Datu and just recently with a magnitude MW 6.0 in Ranau. Over the years, a total of 159 with magnitudes ranging from 2.9 to 6.0 are known to have occurred. The effects of the earthquakes should be anticipated in order to mitigate the catastrophic failure of structures. In the seismic design of structures, the most critical part is the development of seismic design ground motion. In order to develop this ground motion, seismic hazard analysis such as probabilistic seismic hazard analysis (PSHA) is required. This study presents technical research into seismic hazard assessment for East Malaysia based on three objectives. The first objective is to determine the fault characteristics mechanism and layouts for the region. Next, to produce spectral ground motion prediction equation (GMPE) for the region due to scarcity and incompatible equation of GMPE from other region. Then, to determine the peak ground acceleration (PGA) throughout the region to be plot inside hazard map in terms of 10% and 2% probability of exceedance (PE) in design time period of 50 years with respect to 475 and 2,475 years return period. Since there is limited information regarding the fault sources in East Malaysia, the relevant source zones are divided into three different possible earthquake source (far-field and near-field due to background seismicity and local fault). In general, the plot of the new generated GMPE accurately represents an earthquake condition in East Malaysia. The hazard map shows the PGA values for 10% probability of exceedance is in the range of 0 to 250 cm/s2 and 2% probability of exceedance in the range of 20 to 400 cm/s2. In conclusion, the main contributor to hazard is dominated by local fault sources with Sabah has the highest seismic hazard level than Sarawak. 2016-01 Thesis http://eprints.utm.my/id/eprint/78302/ http://eprints.utm.my/id/eprint/78302/1/NoorSheenaHerayaniPFKA2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:98202 phd doctoral Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Harith, Noor Sheena Herayani Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake
description	East Malaysia has witnessed an increase in low to moderate seismic activities due to a few active fault lines. While damaging earthquakes are fortunately rare, from historical records ranging between 1874 and 2014, the region already experienced devastating earthquake with a magnitude MW 5.2 in Sarawak, MW 5.8 in Lahad Datu and just recently with a magnitude MW 6.0 in Ranau. Over the years, a total of 159 with magnitudes ranging from 2.9 to 6.0 are known to have occurred. The effects of the earthquakes should be anticipated in order to mitigate the catastrophic failure of structures. In the seismic design of structures, the most critical part is the development of seismic design ground motion. In order to develop this ground motion, seismic hazard analysis such as probabilistic seismic hazard analysis (PSHA) is required. This study presents technical research into seismic hazard assessment for East Malaysia based on three objectives. The first objective is to determine the fault characteristics mechanism and layouts for the region. Next, to produce spectral ground motion prediction equation (GMPE) for the region due to scarcity and incompatible equation of GMPE from other region. Then, to determine the peak ground acceleration (PGA) throughout the region to be plot inside hazard map in terms of 10% and 2% probability of exceedance (PE) in design time period of 50 years with respect to 475 and 2,475 years return period. Since there is limited information regarding the fault sources in East Malaysia, the relevant source zones are divided into three different possible earthquake source (far-field and near-field due to background seismicity and local fault). In general, the plot of the new generated GMPE accurately represents an earthquake condition in East Malaysia. The hazard map shows the PGA values for 10% probability of exceedance is in the range of 0 to 250 cm/s2 and 2% probability of exceedance in the range of 20 to 400 cm/s2. In conclusion, the main contributor to hazard is dominated by local fault sources with Sabah has the highest seismic hazard level than Sarawak.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Harith, Noor Sheena Herayani
author_facet	Harith, Noor Sheena Herayani
author_sort	Harith, Noor Sheena Herayani
title	Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake
title_short	Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake
title_full	Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake
title_fullStr	Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake
title_full_unstemmed	Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake
title_sort	probabilistic seismic hazard assessment of east malaysia using proposed empirical gmpe for shallow crustal earthquake
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2016
url	http://eprints.utm.my/id/eprint/78302/1/NoorSheenaHerayaniPFKA2016.pdf
_version_	1747817956062003200

Probabilistic seismic hazard assessment of East Malaysia using proposed empirical GMPE for shallow crustal earthquake

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