STUDI PENDAHULUAN PENENTUAN STRAIN RATE KERAK BUMI SESAR KALI OPAK BERDASARKAN GEMPABUMI YOGYAKARTA TAHUN 2006 DAN 1867 (STUDI KASUS: GEMPABUMI YOGYAKARTA 27 MEI 2006 DAN 10 JUNI 1867)
Keywords:
Stress drop, strain rate, momen seismic, inter-seismikAbstract
The Yogyakarta earthquake (mb 5.9–Mw 6.3) which occurred May 27, 2006 was estimated as the repetition of the Yogyakarta earthquake of June 10, 1867, and both earthquakes has an identical source area in Kali Opak fault. Byassumption that the both earthquakeshas aninter-seismic time about of 139 years and it has almost an identical destructive impact. The purpose of this paper to calculate of the strain rate values by using both earthquakes data. To refer of the inter-seismic time of about 139 years, Kali Opak faultslip rate of about 5 mm/y and using the scaling law relation of the earthquake parameter, the crust strain rate of Kali Opak fault and its vicinity, and magnitude estimation of 1867 earthquake is about of 0.28 - 0.3 x 10-14/s and Mw 6.4 until 6.6 respectively.
References
Ben-Menahem, A., and Singh, S.J. (1981). Seismic waves and sources. New York: Springer.
Udias, A., Madariaga, R., and Buforn, E. (2014). Source Mechanism of Earthquake, Theory and Practise. Cambridge University Press.
Putri, R.H. (2018). Babad Paku Alaman karya Gusti Kanjeng R. Ayu Adipati Paku Alam atau Siti Jaleka (Permaisuri Paku Alam VI)-Tentang Gempa Yogyakarta 1867, Dwi Cahyono Arkeolog dan Pengajar Sejarah pada Universitas Negeri Malang. Dibahasa ulang oleh Risa Herdahita Putri. 13 Agustus 2018. https://historia.id/@risa.h/article/1.
Geoscience, FMIPA Universitas Indonesia. (2021). Portal Tsunami. Universitas Indonesia. Depok, Jawa Barat. https://trc- ui.geosinyal.id.
Husein, S., Pramumijoyo, S., Thant, M., Naing, T., and Murjaya, J. (2007). A Short Note on the Seismic History of Yogyakarta Prior to the May 27, 2006 Earthquake. Geological Engineering Department, Faculty of Engineering. Gadjah Mada University, Indonesia.
Badan Geologi.(2008). Katalog Gempabumi Merusak di Indonesia. Pusat Vulkanologi dan Mitigasi Bencana Geologi. Badan Geologi. Departemen energi dan Sumber Daya Mineral. Bandung.
USGS. (2020). The Latest Earthquakes. https//www.usgs.gov Latest Earthquakes.
Tim Survey Gempabumi Yogyakarta. (2006). Laporan hasil survey Stasiun Geofisika Yogyakarta, 2006-tidak di publikasi. Stasiun Geofisika Klas I Yogyakarta. Badan Meteorologi dan Geofisika.
Hamilton, W. (1979). Tectonic of the Indonesian Region. United States Government Printing Office, Washington, 1979.
Bock, Y et al. (2000). Crustral motion in Indonesia from Global Positioning System measurements. Journal Geophysical Research, vol.108, No.B8,2367.
Murjaya, J, Daryono, Ahadi, S. (2021). Studi Pendahuluan Estimasi Strain Rate Kerakbumi sekitar sumber Gempabumi. Studi Kasus: Gempabumi Malang Mw 6.0 tanggal 4 Nopember 1972 dan 10 April 2021.Web. BMKG, Jakarta, Indonesia.
Murjaya, J., Pramumijoyo, S., Karnawati, D., Daryono, Meilano, I., Supendi, P., Ahadi, S., Gayatri, Imananta, R., Syukur, F., Solomo, D.S., Kresno, A. (2021). Earthquakes Risk Assessment of the Opak and Merapi-Merbabu active faults to support earthquakes mitigation program in Yogyakarta. Province and its vicinity. International Conference on Geological Engineering and Geosciences. 16-18 March 2021.Yogyakarta.
Badan Meteorologi Klimatologi dan Geofisika. (2020). Katalog Gempabumi Indonesia 1900- 2020. Badan Meteorologi Klimatologi dan Geofisika Jakarta.
Pusat Studi Gempa Nasional. (2017). Peta Sumber dan Bahaya Gempa Indonesia tahun 2017. Pusat Penelitian dan Pengembangan Perumahan dan Pemukiman. Badan Penelitian dan Pengembangan. Kementrian Pekerjaan Umum dan Perumahan Rakyat. Bandung.
Wells, D. L. and Coppersmith. (1994). New Empirical Relationships among Magnitude, Rupture Length, Rupture Width, Rupture Area, and Surface Displacement. Bulletin of the Seismological Society of America, Vol. 84, No. 4, pp. 974-1002, August 1994.
Kanamori, Hand Anderson, L.D. (1975). Theoritical Basis of some Empirical Relations in Seismology. Bulletin of the Seismological Society of America. Vol.65, No.5, pp. 1073- 1095. Octobe r 1975.
Shibazaki, B. (2006). Scaling relations of Earthquakes. Lecture notes. International Instotute of Seismology and Earthquake Engineering. Buliding Research Institute. Japan.
Nestola.Y. et al. (2014). Strain rate‐ dependent lithosphere rifting and necking architectures in analog experiments.AGU Publications. Journal of Geophysical Research: Solid Earth Homepage.https://doi.org/10.100 2/2014JB011623.
Claudio Vita-Finzi. (2004). Buckle-controlled seismogenic faulting in peninsular India. Article in Press. 0277-3791-see front matter @2004 Published by Elsevier Ltd.
Gudmundsson. A. (2011). Rock Fracture in Geological Processes. Cambridge University Press.
