SEISMIC PATTERN BASED ON ANALYSIS OF FRACTAL VARIATIONS BEFORE THE 2009 SUMATRA EARTHQUAKE WITH ZMAP SOFTWARE
DOI:
https://doi.org/10.30829/jistech.v4i1.4157Keywords:
The 2009 Padang Earthquake, mitigation, fractalAbstract
The Sumatra-Andaman earthquake of December 26, 2004, to Padang earthquake on September 30, 2009, was a series of destructive earthquakes in the history of the Sumatra earthquake. This research is aimed at earthquake mitigation by determining the patterns and earthquake phenomena before the 2009 Padang Earthquake with fractal dimensions D based on the Maximum Likelihood Estimation (MLE) by Gutenberg-Richter as an effort to predict earthquakes in anticipation period (pre-disaster) with the help of Zmap software. Seismic data was taken from NEIC-USGS and BMKG until November 2013 with an area limit of 92o BT - 106o BT and 7o LU - 7o LS, at a maximum earthquake depth of 200 km, which contains the Sumatra region. The estimation results explain the temporary decrease in fractal D seen and began to rise again before the significant earthquake in The 2009 Padang EarthquakeReferences
Makrup, L., 2011, Kurva Percepatan Tanah Puncak dan Seismik Hazard. Laporan Penelitian Hibah Institusi, Magister Teknik Sipil, Universitas Islam Indonesia, Yogyakarta
BMKG. 2010. Intregrasi Pengamatan Parameter Geofisika Dalam Usaha Prediktabilitas Gempabumi. Laporan Akhir Program Insentif Kementerian Negara Riset dan Teknologi Tahun 2010. Puslitbang BMKG, Jakarta BMKG, 2010
Ramadhani, A. Y., 2012, Seismicity in Java, Indonesia: Spatial & Temporal Study Using Fractal Dimension & b-value. Thesis. Universitas Gadjah mada, Yogyakarta
Murase, K., 2004, A Characteristic Change in Fractal Dimension Prior to the 2003 Tokachi-oki Earthquake (MJ = 8.0), Hokkaido, Northern Japan. Earth Planets Space, 56, 401-405
Rohadi, S., Grandis, H., Ratag, M. A., 2008, Studi Potensi Seismotektonik sebagai Precursor Tingkat Kegempaan di Wilayah Sumatera. Jurnal Meteorologi dan Geofisika, Vol. 9, No. 2, 65-77
Sunardi, B. 2009. Analisa Fraktal dan Rasio Slip Daerah Bali-NTB Berdasarkan Pemetaan Variasi Parameter Tektonik. Subduksi Jawa. Jurnal Meteorologi dan Geofiasika, Vol. 10, No. 1, 58-65
Widodo. 2012. Seismologi Teknik & Rekayasa Kegempaan. Pustaka Pelajar, Yogyakarta, ISBN: 978-602-229-110-7
Pertiwi, I. I., Arsyad, M., Palloan, P., 2012, Analisis Distribusi Spasial dan Temporal Seismotektonik Wilayah Sulawesi Bagian Selatan dan Barat Berdasarkan Nilai-b dengan Metode Maksimum Likelihood. Jurnal Sains dan Pendidikan Fisika. Jilid 8, Nomor 3, Desember 2012, hal 269-278
Nanjo, K., Nagahama, H., 2000, Observed Correlations between Aftershock Spatial Distribution and Earthquake Fault Lengths. Terra Nova, 12, pp. 312-316
Kumar, A., Ray, S. S., Joshi, A., Sen, A., Mittal, H. (2006). b-value and Fractal Dimension of Local Seismicity Around Koyna Region (India). 13th SEE-2006. Research Scholar, Dept. of Earthquake Engg.,I.I.T. Roorkee
Li, Q., Ming Xu, G. 2013. Characteristic Changes of Scale Invariance of Seismicity Prior to Large Earthquakes: A Constructive Review. International Journal of Geophysics, Volume 2013, Article ID 391637, 11 pages. Hindawi Publishing Corporation
Kumar, A., Ray, S. S., Joshi, A., Mittal, H., Sachdeva, R., Kumar, R., Ghangas, V. 2013. The b-value and Fractal Dimension of Local Seismicity Around Koyna Dam (India). Earthq. Sci. DOI 10.1007/s11589-013-0008-1. National Geophysical Research Institute, Hyderabad, India
Wiemer, S. 2001. A Software Package to Analyze Seismicity: ZMAP. Seis. Res. Lett., 72, 374-83