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Seismic Velocity Structures beneath the Guntur Volcano Complex, West Java, Derived from Simultaneous Tomographic Inversion and Hypocenter Relocation

Journal of Mathematical and Fundamental Sciences · Vol. 45 No. 1 (2013) · pp. 17–28

DOI
10.5614/j.math.fund.sci.2013.45.1.2
ISSN
2338-5510, 2337-5760
Published
2013-03-01
Publisher
Directorate for Research and Innovation (DRI) ITB
Language
eng

Abstract

We conducted travel time tomographic inversion to image seismic velocity structures (Vp, Vs, and Vp/Vs ratio) with simultaneous hypocenter adjustment beneath the Guntur volcano complex that is located in the Garut district, West Java province, Indonesia. The Guntur volcano is one of the active volcanoes in Indonesia, although large eruptions have not occurred for about 160 years. We used volcanic and tectonic earthquakes catalog data from seismic stations deployed by Centre for Volcanology and Geological Hazard Mitigation (CVGHM). For the tomographic inversion procedure, we set grid nodes with a horizontal spacing of 2 x 2 km2 and an average vertical spacing of 2 km. Our results show low Vp, low Vs, and high Vp/Vs ratio regions beneath the Guntur crater and the Gandapura caldera at depths of 6-8 km and 7-9 km, respectively. These features can be associated with amelt-filled pore rock structure. However, a low Vp/Vs ratio and low velocities are exhibited beneath the Kamojang caldera at depths of 2-6 km that may be associated with rock with H2O-filled pores with a high aspect ratio.

Keywords

Collaboration network of the authors

35 authors · 89 co-authorship links

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  • Bandung Institute of Technology
  • Affiliation unknown
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Co-authorOrganisationJoint articles
Mohamad RidwanAffiliation unknown3
Pingkan AditiawatiBandung Institute of Technology2
Ahmad SyahputraAffiliation unknown2
Rexha Verdhora RyAffiliation unknown2
Tepy SeptyanaAffiliation unknown2
Arii ArdjunaAffiliation unknown2
A. AfnimarAffiliation unknown2
Sorja KoesumaAffiliation unknown2
Yoichi FukudaAffiliation unknown2
Ega Dioni PutriBandung Institute of Technology1
Massayu Leylia KhodraBandung Institute of Technology1
Harmita LestariAffiliation unknown1
Pepen SupendiAffiliation unknown1
Wira Hadi KusumaAffiliation unknown1
Sastia Prama PutriAffiliation unknown1
Magdalena Lenny SitumorangAffiliation unknown1
Felicia Irene SaputraAffiliation unknown1
Ulya AlviredietaAffiliation unknown1
Irwan MeilanoAffiliation unknown1
Moehammad AwaluddinAffiliation unknown1
Mochamad ApriBandung Institute of Technology1
Awali PriyonoAffiliation unknown1
Syamsurizal RizalAffiliation unknown1
Mochamad Agus MoelyadiAffiliation unknown1
David Prambudi SaharaAffiliation unknown1
Malendra RusniAffiliation unknown1
Rifki R. AriefAffiliation unknown1
Osman R. TurendroAffiliation unknown1
Masyhur IrsyamAffiliation unknown1
Hiroaki YamanakaAffiliation unknown1
F. FatkhanAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journals.itb.ac.id/index.php/jmfs/oai, first harvested 9 Nov 2026, last seen 9 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en-US">Seismic Velocity Structures beneath the Guntur Volcano Complex, West Java, Derived from Simultaneous Tomographic Inversion and Hypocenter Relocation</dc:title>
	<dc:creator>Nugraha, Andri Dian</dc:creator>
	<dc:creator>Widiyantoro, Sri</dc:creator>
	<dc:creator>Gunawan, Awan</dc:creator>
	<dc:creator>Suantika, Gede</dc:creator>
	<dc:subject xml:lang="en-US">Seismic tomography</dc:subject>
	<dc:subject xml:lang="en-US">Guntur volcano</dc:subject>
	<dc:subject xml:lang="en-US">Seismic structure</dc:subject>
	<dc:subject xml:lang="en-US">Melt-filled pore</dc:subject>
	<dc:subject xml:lang="en-US">West Java</dc:subject>
	<dc:description xml:lang="en-US">We conducted travel time tomographic inversion to image seismic velocity structures (Vp, Vs, and Vp/Vs ratio) with simultaneous hypocenter adjustment beneath the Guntur volcano complex that is located in the Garut district, West Java province, Indonesia. The Guntur volcano is one of the active volcanoes in Indonesia, although large eruptions have not occurred for about 160 years. We used volcanic and tectonic earthquakes catalog data from seismic stations deployed by Centre for Volcanology and Geological Hazard Mitigation (CVGHM). For the tomographic inversion procedure, we set grid nodes with a horizontal spacing of 2 x 2 km2 and an average vertical spacing of 2 km. Our results show low Vp, low Vs, and high Vp/Vs ratio regions beneath the Guntur crater and the Gandapura caldera at depths of 6-8 km and 7-9 km, respectively. These features can be associated with amelt-filled pore rock structure. However, a low Vp/Vs ratio and low velocities are exhibited beneath the Kamojang caldera at depths of 2-6 km that may be associated with rock with H2O-filled pores with a high aspect ratio.</dc:description>
	<dc:publisher xml:lang="en-US">Directorate for Research and Innovation (DRI) ITB</dc:publisher>
	<dc:date>2013-03-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journals.itb.ac.id/index.php/jmfs/article/view/789</dc:identifier>
	<dc:identifier>10.5614/j.math.fund.sci.2013.45.1.2</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Mathematical and Fundamental Sciences; Vol. 45 No. 1 (2013); 17-28</dc:source>
	<dc:source>2338-5510</dc:source>
	<dc:source>2337-5760</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journals.itb.ac.id/index.php/jmfs/article/view/789/470</dc:relation>
</oai_dc:dc>