Seismotectonic, Potential Seismic and Volcano Hazard of Minahasa Peninsula, Eastern Indonesia
DOI:
https://doi.org/10.33332/jgsm.geologi.v23i2.683Abstract
The Minahasa Peninsula is located in the western flank of Mollucca seismotectonic zone existed, where are four active tectonic plates colliding from east to west are the Philippine Oceanic Plate, Halmahera Micro Continental Plate, Mayu Ridge Micro Oceanic Slab Plate and the Minahasa Peninsula Micro Continental Plate. The result of the probabilistic seismic hazard assessment in Manado City and surrounding area, Zone I (site class SE), Zone II (site class SD) and Zone III (site class SC), shows the building and non building for risk category I, II, III and IV, has the seismic disign category D. Building and non building in Zone I (SD1=0,80g) with risk category I, II, III has structure seismic design category E and risk category IV has seismic design category F.
The correlation of seismotectonic, structural geology, and seismicity to the volcanic centers distribution in this region, shows the Minahasa Peninsula volcanoes can be divided into two regions are the compressional and extentional volcanoes tectonic regions. To mitigate the seismic risk in this region, the structure for building and non building contraction is recommended to follow the procedures for planning earthquake resistance for building structures and non building (BSN, SNI 1726-2019). On another hand, for potential volcano hazard, recommended followed the guidance map of the volcanic hazard prone region by The Center for Volcano and Geological Hazard Mitigation, Geological Agency of Indonesia.
Keywords: Mollucca seismotectonic zone, potential seismic and volcanoes hazard.
Downloads
References
Badan Standarisasi Nasional, 2012. Earthquake Resistance Planning Procedure for Building and Non Building, SNI 1726-2019. BSN, Jakarta.
Brehme, M., Moeck, I.,Yustin Kamah, Zimmermann, G. and Sauter, M., 2014. A Hydrotectonic Model of a Geothermal Reservoir - A Study in Lahendong, Indonesia. Geothermics, 51: 228 -239.
Di Leo, J.F., Wookey, J., Hammond, J.O.S., Kendall, J.M., Kaneshima, S., Inoue, H.,Yamashina, T., and Harjadi, P., 2012. Deformation and Mantle Flow Beneath the Sangihe Subduction Zone from Seismic Anisotropy. Physics of the Earth and Planetary Interiors, 194-195: 38–54.
Effendi, A.C. dan Bawono, S, 1997. Peta Geologi Lembar Manado, Sulawesi, Skala 1:250.000. Puslitbang Geologi, Bandung.
Lécuyer, F., Bellier, O., Gourgaud, A., and Vincent, P.M., 1997. Tectonique Active du Nord-Est de Sulawesi (Indonésie) et Contrôle Structural de la Caldeira de Tondano. Comptes Rendus de l'Académie des Sciences – Series IIA, Earth and Planetary Science, 325: 607-613.
Hamilton, W., 1979. Tectonics of the Indonesian Region. U.S. Geol. Surv., Prof. Pap. 1078, 345 pp.
Matsuoka, M., Wakamatsu, K., Fujimoto S. and Midorikawa, 2006. Average Shear-Wave Velocity Mapping using Japan Engineering Geomorphologic Classification Map. JSCE., 23(1): 57–68.
Pusat Vulkanologi dan Mitigasi Bencana Geologi, 2021. Peta Sebaran Gunungapi Aktif Indonesia, Skala 1:5.000.000. PVMBG, Bandung.
Pusat Studi Gempa Nasional, 2017. Peta Sumber dan Bahaya Gempa Indonesia Tahun 2017. Pusat Litbang Perumahan dan Pemukiman, Badan Penelitian dan Pengembangan, Kementerian PUPR, 375 h, Bandung.
Setiawan, J.H., Lumbanbatu, U.M. dan Pudjoprayitno, S., 2002. Peta Seismotektonik Daerah Manado dan Sekitarnya Skala 1:100.000, Provinsi Sulawesi Utara. Puslitbang Geologi, Bandung.
Siahaan, E.E., Soemarinda, S., Fauzi, A., Silitonga, T., Azimudin, T., and Raharjo, I.B., 2005. Tectonism and Volcanism Study in the Minahasa Compartment of the North Arm of Sulawesi Related to Lahendong Geothermal Field, Indonesia. ProceedingsWorld Geothermal Congress 2005, Antalya, Turkey, 24–29 April 2005, 5 pp.
Supartoyo, Afif, H., Arifin,M., Pradipto, J., Nurfalah, F., Solang, M., Walandouw, J., dan Hompas, M.H., 2020. Pemetaan Mikrozonasi Bahaya Gempabumi di Kota Manado, Provinsi Sulawesi Utara. Bulletin Vulkanologi dan Bencana Geologi, 14(1): 19-30.
USGS, 2015. Earthquake Catalog dan Global Centroid Moment Tensor Catalog, 2015. Data gempa bumi tahun 1970 – 2015, M> 4 Mb.
Walpersdorf, A., Rangin, C., and Vigny, C., 1998. GPS Compared to Long-Term Geologic Motion of the North Arm of Sulawesi. Earth and Planetary Science Letters, 159: 47-55.
Yani, A., 2006. Numerical Modelling of the Lahendong Geothermal System,Indonesia, United Nations University. Report, pp. 547–580.
Downloads
Published
Issue
Section
License
Authors who publish articles in Jurnal Geologi dan Sumberdaya Mineral (JGSM.Geologi) agree to the following terms:
- Authors retain copyright of the article and grant the journal right of first publication with the work simultaneously licensed under a CC-BY-NC or The Creative Commons Attribution–ShareAlike License.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access)
