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Horizontal-to-Vertical Spectral Ratio (HVSR) Method for Earthquake Risk Determination of Jakarta City with Microtremor Data

Isburhan, Rosliani Widia Pamungkas; Nuraeni, Giyat; Ry, Rexha Verdhora; Yudistira, Tedi; Cipta, Athanasius; Cummins, Phil

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Jakarta is the capital of the Republic of Indonesia which lies above a thick sedimentary basin. Geographically, Jakarta is 200 km away from the Indo-Australian subduction zone that sinks under the island of Java. There are many vital buildings and with the thick sediments underlying the city of Jakarta. Therefore, this region has a considerable seismic vulnerability. This will be dangerous if there is an earthquake that has the same frequency as the natural frequency of the building. It...[Show more]

dc.contributor.authorIsburhan, Rosliani Widia Pamungkas
dc.contributor.authorNuraeni, Giyat
dc.contributor.authorRy, Rexha Verdhora
dc.contributor.authorYudistira, Tedi
dc.contributor.authorCipta, Athanasius
dc.contributor.authorCummins, Phil
dc.contributor.editorR V Ry
dc.contributor.editorH F Lawrens
dc.contributor.editorD P Sahara
dc.contributor.editorR M R Sule
dc.contributor.editorZulfakriza
dc.coverage.spatialBali, Indonesia
dc.date.accessioned2020-03-16T22:46:02Z
dc.date.available2020-03-16T22:46:02Z
dc.date.createdAugust 7-10 2018
dc.identifier.issn1755-1307
dc.identifier.urihttp://hdl.handle.net/1885/202251
dc.description.abstractJakarta is the capital of the Republic of Indonesia which lies above a thick sedimentary basin. Geographically, Jakarta is 200 km away from the Indo-Australian subduction zone that sinks under the island of Java. There are many vital buildings and with the thick sediments underlying the city of Jakarta. Therefore, this region has a considerable seismic vulnerability. This will be dangerous if there is an earthquake that has the same frequency as the natural frequency of the building. It will cause a resonance resulting in amplification of seismic waves in the area. Each building has a different natural frequency, one that affects is the height of the building. To characterize the subsurface structure of the Jakarta Basin, microtremor data processing was obtained from the recording of 95 stations which was operated in October 2013 - February 2014 using Horizontal-to-Vertical Spectral Ratio (HVSR) method. HVSR is a method for obtaining subsurface information from single station measurements by comparing the Fourier spectrum of horizontal components to its vertical components. This ratio is a function of the frequency that will produce the H/V curve. The dominant frequency value on the HVSR curve represents the natural frequency of the area. The Seismic Vulnerability Index (Kg), which serves to determine the soil weak zone, can be calculated from the H/V curve. The dominant frequency value maps generated for the Jakarta area range from 0.2-0.22 Hz for low frequencies and 1-8.6 Hz for high frequencies. The large dominant frequency correlates with the thin sediment layer. Based on the frequency range, the south and northwest regions of Jakarta have relatively shallow basement depths compared to other regions. The resulting amplification value map can be divided into 4 maps with different period ranges. From the four maps, the North Jakarta area or the area around Jakarta's coastline is most at risk of amplification with an H/V value up to 11 because the area is associated with alluvial deposits and coastal sediments. The seismic vulnerability distribution map in Jakarta City ranges from 15-850 relatively high in northeast and north of Jakarta.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherInstitute of Physics Publishing
dc.relation.ispartofseries2nd Southeast Asian Conference on Geophysics, SEACG 2018
dc.rights© 2019
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.sourceIOP Conference Series: Earth and Environmental Science
dc.titleHorizontal-to-Vertical Spectral Ratio (HVSR) Method for Earthquake Risk Determination of Jakarta City with Microtremor Data
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
dc.date.issued2019
local.identifier.absfor040407 - Seismology and Seismic Exploration
local.identifier.ariespublicationu3102795xPUB4489
local.publisher.urlhttp://conferenceseries.iop.org/content/home
local.type.statusPublished Version
local.contributor.affiliationIsburhan, Rosliani Widia Pamungkas, Institut Teknologi Bandung
local.contributor.affiliationNuraeni, Giyat, Institut Teknologi Bandung
local.contributor.affiliationRy, Rexha Verdhora, Institut Teknologi Bandung
local.contributor.affiliationYudistira, Tedi, InstitutTeknologi Bandung
local.contributor.affiliationCipta, Athanasius, College of Science, ANU
local.contributor.affiliationCummins, Phil, College of Science, ANU
local.identifier.essn1755-1315
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage8
local.identifier.doi10.1088/1755-1315/318/1/012033
local.identifier.absseo960610 - Urban Land Evaluation
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2019-11-25T07:42:25Z
local.identifier.scopusID2-s2.0-85071855051
dcterms.accessRightsOpen Access
dc.provenanceContent from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd
dc.rights.licenseCreative Commons Attribution 3.0 licence
CollectionsANU Research Publications

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