Estimation of Site Amplifications from Shear-Wave Velocity at Pyroclastic Deposits and Basins in Aceh Tengah and Bener Meriah District, Aceh Province, Indonesia

Ibnu Rusydy, Khaizal Jamaluddin, Eldina Fatimah, Syafrizal Syafrizal, Fauzi Andika, Yoshinori Furumoto


Earthquake on July 2, 2013, destroyed several buildings in Aceh Tengah district and Bener Meriah district of Aceh Province. This earthquake gives Aceh government a clue that the seismic hazard map must become the reference in development plan in future. To respond this idea, we conduct the research and try to estimate the amplification factor for developing seismic hazard maps of those districts. This study aims to determine the average shear wave velocity up to the depth of 30 meters (Vs30) and the amplification factor of Aceh Tengah district and Bener Meriah district, to build the seismic hazard map of both districts. In this study, we use the MASW (Multi-Channel Analysis of Surface Waves) with 24 geophones in the frequency of 10 Hz at 10 locations to determine the Vs30 beneath the surface. The soil and rock classification from ASCE 2010 and SNI 1726:2012 used to classify the soil/rock based on Vs30 and calculate the predicted amplification factor using the Borcherdt & Eeri equation. The result of this study reveals that the range of Vs30 in the study area is 76 m/s – 308 m/s. The loosest sediment has 76 m/s located at point 2 in Aceh Tengah district. The shear wave velocity of 76 m/s classifies as soft soil (SE). Based on the calculation, the pyroclastic deposit and sediment in the basin of the study area will be amplified the seismic wave in the range of 2.9 to 3.3 times. In the future, we suggest conducting another geophysical survey to determine the correct amplification factor to improve the quality of seismic hazard map.

Full Text:



Aldiamar, F., Ridwan, M., Asrurifak, M., & Irsyam, M. (2010). Analisis Dan Evaluasi Factor Amplifikasi Percepatan Puncak Gempa Di Permukaan Tanah. Jurnal jalan-jembatan, 27(3), 180-194.

ASCE/SEI 7-10. (2010). Minimum Design Loads for Buildings and Other Structures. Virginia: American Society of Civil Engineers.

Borcherdt, R. D., & Eeri, M. (1994). Estimation of Site-dependent Response Spectra for Design (Methodology and Justification). Earthquake Spectra, 10(4), 617-653.

Cameron, D. R., Bennet, J. D., Bridge, D. M., Clarke, M. G., Djunuddin, A., Ghazali, S. A., . . . Thomson, S. J. (1983). Geologic 1:250,000 Map of Takegon Quadragle, Sumatra. Bandung: Geological Research and Development Centar (GRDC).

Heisey, J. S., Stokoe II, K. H., & Meyer, A. H. (1982). Moduli of pavement systems from spectral analysis of surface waves. Transportation Research Record , 22-31.

Ismail, A., Denny, F. B., & Metwaly, M. (2014). Comparing continuous profiles from MASW and shear-wave reflection seismic methods. Journal of Applied Geophysics, 67-77.

Park, C. B., Miller, R. D., & Xia, J. (1996). Multi-channel analysis of surface waves using Vibroseis. 66th Ann. Mtg. of SEG, (pp. 68-71). Denver.

Park, C. B., Miller, R. D., & Xia, J. (1997). Multi-Channel Analysis of Surface Waves (MASW) "A summary report of technical aspects, experimental results, and perspective. Kansas: Kansas Geological Survey.

Rusydy, I., Khaizal, Fatimah, E., Syafrizal, & Andika, F. (2016). Studi Awal: Analisa Kecepatan Gelombang Geser (Vs) Pada Cekungan Takengon Dalam Upaya Mitigasi Gempa Bumi. Jurnal Teknik Sipil, 6(1), 1-12.

Rusydy, I., Syamsidik, & Pagihariyadi, P. (2015). Pemetaan Makroseismik Untuk Pendugaan Sumber Gempa Bumi, Studi Kasus: Gempa Bumi Aceh Tengah 2 Juli 2013. Proseding Konferensi Nasional FPT PRB (pp. 15-20). Surakarta: LPPKM, Universitas Sebelas Maret.

SNI 1726. (2012). SNI 1726: 2012 Tentang Tata Cara Perencanaan Ketahanan Gempa Untuk Struktur Bangunan Gedung dan Non-Gedung. Jakarta: Badan Standarisasi Nasional.

Thompson, R. G., & Turk, J. (1998). Introduction to Physical Geology (2nd ed.). California: Saunders College Pub.

Tim Revisi Peta Gempa Indonesia. (2010). Ringkasan Hasil Studi Tim Revisi Peta Gempa Indonesia 2010. Jakarta: BNPB, AIFDR, RISTEK, DPU, ITB, BMKG, LIPI, ESDM.

Xia, J., Miller, R. D., Park, C. B., Hunter, J. A., & Harris, J. B. (2000). Comparing shear-wave velocity profiles from MASW technique with borehole measurements in unconsolidated sediments of the Fraser River Delta. J. Environ. Eng. Geophys, 848–870.


  • There are currently no refbacks.

Copyright (c) 2017 Ibnu Rusydy, Khaizal Jamaluddin, Eldina Fatimah, Syafrizal Syafrizal, Fauzi Andika



  ISSN: 2527-4341


 Indexed in: