Analysis of Subsurface Layers using the Multichannel Analysis of Surface Waves Method in Manimbahoi, Gowa Regency
Analisis Lapisan Batuan Bawah Permukaan Menggunakan Metode Multichannel Analysis of Surface Waves di Manimbahoi Kabupaten Gowa
DOI:
https://doi.org/10.20956/geocelebes.v6i2.22025Keywords:
unconsolidated sediment, MASW, mineral, velocity of Vs30Abstract
This research is about the structure of the soil layer at the research site in Manimbahoi, Parigi District, Gowa Regency. This research is very important considering that the location has experienced a mega landslide which resulted in some residents being not found. This study aims to provide an overview of the shallow soil layer at the landslide disaster location. This study uses one of the geophysical methods, Multichannel Analysis of Surface Waves (MASW) method, with 4 lines at points at the landslide location. Based on the results of the study, the velocity of the Vs30 wave was obtained in each line. On the first line the velocity of Vs30 is 303.5 m/s. On the second line the velocity of Vs30 is 284.1 m/s. On the third line the velocity of Vs30 is 309.0 m/s. On the fourth line the velocity of Vs30 is 256.1 m/s. Based on the soil classification by looking at the Vs30 velocity, it can be determined that the type of soil at the research location is medium soil (sand). Medium soil is unconsolidated sediment, described as soil composed of minerals that are not compact
References
Blatz, J.A., Ferreira, N.J. and Graham, J. 2004. Effects of near-surface environmental conditions on instability of an unsaturated soil slope. Canadian Geotechnical Journal. 41(6), pp.1111 – 1126. https://doi.org/10.1139/t04-058
Bollschweiler, M,. Stoffel, M., Ehmisch, M., Mombaron, M. 2007. Reconstruction Spatio-Temporal Patterns of Debris-Flow Activity Using Dendrogeomorphological Methods. Geomorphology. 87(4), pp.337 – 351. https://doi.org/10.1016/j.geomorph.2006.10.002
García-Soriano D., Quesada-Román, A. and Zamorano-Orozco, J.J. 2020. Geomorphological hazards susceptibility in high-density urban areas: A case study of Mexico City. Journal of South American Earth Sciences. 102, pp.102667. https://doi.org/10.1016/j.jsames.2020.102667
Hasnawir. and Kubota, T. 2011. Landslide susceptibility evaluation by 3-D slope stability analysis. International Journal of Ecology and Development. 19(S11), pp.1-14. http://www.ceser.in/ceserp/index.php/ijed/article/view/1718/0
Heisey, J.S., Stokoe, K.H.II., Hudson, W.R. and Meyer, A.H. 1982. Determination of In Situ Shear Wave Velocity from Spectral Analysis of Surface Waves. Summary Report 256-2(s). Austin: Center for Transportation Research, Bureau of Engineering Research, The University of Texas. https://library.ctr.utexas.edu/digitized/texasarchive/phase2/256-2-summary-ctr.pdf
Li, Y. and Mo, P. 2019. A unified Landslide classification system for loess slope: a critical review. Geomorphology. 340(2019), pp.67 – 83. https://doi.org/10.1016/j.geomorph.2019.04.020
Park, C. B., Miller, R. D., Miura, H. 2002. Optimum Field Parametrs of an MASW Survey. [Online]. Available from: http://www.masw.com/files/PAR-02-03.pdf
Massinai, M.A., Sudrajat, A., Hirnawan, F., Syafri, I., Hasanuddin. and Tahir, M.I. 2010. Gerakan Tanah Pada Daerah Rawan Longsor di DAS Jeneberang Bagian Barat Gunung Bawakaraeng Sulawesi Selatan. Buletin Geologi Tata Lingkungan. 20(2), pp.93 – 102.
Massinai, M.A., Harimei, B., Agustiawati, A. and Massinai, M.F.I. 2019. Seismicity Analysis Sulawesi North Arm based on B-values. Journal of Physics: Conference Series. 1341(8), pp.082032. https://doi.org/10.1088/1742-6596/1341/8/082032
Solle, M.S. and Ahmad, A. 2016. Landslide Intensity on River Morphology of Jeneberang Wathershed after Collapse of Caldera Wall at Mt. Bawakaraeng. Research Journal of Applied Sciences. 11(9), pp.874 – 878. https://medwelljournals.com/abstract/?doi=rjasci.2016.874.878
Stokoe, K.H.II., Wright, S.G., Bay, J. and Röesset, J.M. 1994. Characterization of geotechnical sites by SASW method. In RD. Woods (ed.). Geophysical Characterization of Sites: 15-25. New Delhi: Oxford Publisher.
UBC. 1997. Uniform Building Code. [Online]. Available from: http://site.iugaza.edu.ps/sshihada/files/2012/02/UBC-1997.pdf
Varnes, D.J. 1978. Slope Movement Types and Processes. In: Schuster, R.L. and Krizek, R.J., Eds., Landslides, Analysis and Control, Transportation Research Board, Special Report No. 176, National Academy of Sciences, 11-33. https://onlinepubs.trb.org/Onlinepubs/sr/sr176/176-002.pdf
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