MIKROZONASI TINGKAT KERENTANAN LAPISAN TANAH KECAMATAN NAMBO, KENDARI MENGGUNAKAN METODE HORIZONTAL-TO-VERTICAL SPECTRAL RATIO

Authors

  • Al Rubaiyn Jurusan Teknik Geofisika, Universitas Halu Ole https://orcid.org/0000-0003-0636-9821
  • La Hamimu Jurusan Teknik Geofisika, Universitas Halu Ole
  • Mukarramah Mukarramah Jurusan Teknik Geofisika, Universitas Halu Ole

DOI:

https://doi.org/10.23960/jge.v9i3.292

Keywords:

Amplification factor, Carrying capacity, Dominant frequency, Seismic vulnerability index

Abstract

Penelitian respons dinamik dan indeks kerentanan seismik sangat penting untuk memperkirakan dampak kerentanan lapisan permukaan dan kerusakan bangunan ketika terjadi gempa bumi.  Penelitian ini bertujuan untuk mengidentifikasi respons dinamik Kecamatan Nambo, Kota Kendari serta menentukan area-area dengan perlapisan tanah yang sangat rentan. Data mikrotremor diolah menggunakan Geopsy 2.0.5 untuk memperoleh kurva HVSR (Horizontal to Vertical Spectral Ratio) serta parameter respons dinamik tanah berupa frekuensi dominan dan faktor amplifikasinya yang digunakan untuk menghitung indeks kerentanan seismik. Nilai frekuensi dominan Kecamatan Nambo berkisar antara 0,7 Hz- 3,63 Hz yang termasuk dalam kategori tanah Tipe II dan III. Area dengan frekuensi rendah menunjukkan penebalan lapisan alluvial yang merupakan produk sedimentasi permukaan. Interpolasi nilai indeks kerentanan seismik (kg) menunjukkan area Kecamatan Nambo yang memiliki kerentanan tinggi meliputi Kelurahan Pentoahan dan Nambo.

Author Biographies

Al Rubaiyn, Jurusan Teknik Geofisika, Universitas Halu Ole

Jurusan Teknik Geofisika

La Hamimu, Jurusan Teknik Geofisika, Universitas Halu Ole

Jurusan Teknik Geofisika

References

Acerra, C., Alguacil, G., Atakan, K., Azzara, R. M., Bard, P.-Y., Blarel, F., Borges, A., Cara, F., Teves-Costa, P., & Duval, A.-M. (2002). Sesame Project-Deliverable D01-02-WP02: Controlled Instrumental Specifications-Final report of the Instrument Workshop 22-26 October 2001, University of Bergen, Norway.

Arisona, A., Nawawi, M., Khalil, A. E., Nuraddeen, U., Hariri, M., & Fathi, M. (2017). Evaluation study of boundary and depth of the soil structure for geotechnical site investigation using MASW. Journal of Geoscience, Engineering, Environment, and Technology, 2(1), 31-38. https://doi.org/https://doi.org/10.24273/jgeet.2017.2.1.21

Cipta, A., Cummins, P., Dettmer, J., Saygin, E., Irsyam, M., Rudyanto, A., & Murjaya, J. (2018). Seismic velocity structure of the Jakarta Basin, Indonesia, using trans-dimensional Bayesian inversion of horizontal-to-vertical spectral ratios. Geophysical Journal International, 215(1), 431-449. https://doi.org/10.1093/gji/ggy289

Fadhilah, F. H., Yudistira, T., & Sopyan, Y. (2022). Pemetaan Respons Dinamik Tanah Dan Pemodelan Struktur Bawah Permukaan Di Wilayah Kertajati Menggunakan Metode Horizontal-To-Vertical Spectral Ratio (HVSR). Jurnal Geofisika, 20(2), 52-56. https://doi.org/http://dx.doi.org/10.36435/jgf.v20i2.545

Gurler, E. D., Nakamura, Y., Saita, J., & Sato, T. (2000). Local site effect of Mexico City based on microtremor measurement. 6th International Conference on Seismic Zonation. Palm Spring Riviera Resort, California, USA,

Haerudin, N., Rustadi, R., Alami, F., & Yogi, I. B. (2020). The effect site analysis based on microtremor data using the Horizontal to Vertical Spectral Ratio (HVSR) method in the Bandar Lampung City. Journal of Physics: Conference Series, 1572, 012075. https://doi.org/10.1088/1742-6596/1572/1/012075

Hesti, Suharno, Mulyasari, R., & Hidayatika, A. (2021). Analisis Karakteristik Lapisan Sedimen Berdasarkan Data Mikrotremor di Area Rumah Sakit Pendidikan Unila. JGE (Jurnal Geofisika Eksplorasi), 07(02), 150-159.

Kanai, K. (1983). Engineering seismology. Tokyo: University of Tokyo Press.

Kobayashi, H., Midorikawa, S., Tanzawa, H., & Matsubara, M. (1987). Development of portable measurement system for ambient vibration test of building. J Struct Constr Eng (Transactions of Architectural Institute of Japan), 378, 48-56.

Lachetl, C., & Bard, P.-Y. (1994). Numerical and Theoretical Investigations on the Possibilities and Limitations of Nakamura's Technique. Journal of Physics of the Earth, 42(5), 377-397. https://doi.org/10.4294/jpe1952.42.377

Makkawaru, A., Sideng, U., & Sufrianto, S. (2021a). Interpretation of the Geological Romance of Kendari Bay Using Landsat 5 TM. LaGeografia(Vol 20, No 1 (2021): October), 114-124. https://ojs.unm.ac.id/Lageografia/ article/view/24033/pdf

Makkawaru, A., Sideng, U., & Sufrianto, S. (2021b). Interpretation of the Geological Romance of Kendari Bay Using Landsat 5 TM. LaGeografia, 20(1). https://doi.org/10.35580/lageografia .v20i1.24033

Mangininsih, S. L., & Praja, N. K. (2023). Pemetaan Lapisan Tanah Menggunakan Data Mikrotremor HVSR dan Dampaknya Terhadap Daya Dukung Tanah di Kawasan Kota Kendari. Jurnal Geologi dan Sumberdaya Mineral, 24(1), 51-58. https://doi.org/https://doi.org/10.33332/jgsm.geologi.v24i1.724

Marjiyono, M., Soehaimi, A., & Setiawan, J. (2007). Mikrozonasi Daerah Kendari dan Sekitarnya Berdasarkan Respons Tanah Setempat. Jurnal Geologi dan Sumberdaya Mineral, 17(1), 49-56. https://doi.org/https://doi.org/10.33332/jgsm.geologi.v17i1.279

Mokhberi, M. (2015). Vulnerability evaluation of the urban area using the H/V spectral ratio of microtremors. International Journal of Disaster Risk Reduction, 13, 369-374. https://doi.org/https://doi.org/10.1016/j.ijdrr.2015.06.012

Montaj, O. (2007). Geosoft mapping and application system Inc, Suit 500, Richmond St. West Toronto, ON Canada N5SIV6.

Nakamura, Y. (1989). A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface. Railway Technical Research Institute, Quarterly Reports, 30(1).

Nakamura, Y. (2000). Clear identification of fundamental idea of Nakamura’s technique and its applications. Proceedings of the 12th world conference on earthquake engineering,

Nakamura, Y. (2008). On the H/V Spectrum, The 14th World Conference on Earthquake Engineering. In: October.

Nakamura, Y. (2019). What is the Nakamura method? Seismological Research Letters, 90(4), 1437-1443.

Okada, H., & Suto, K. (2003). The microtremor survey method. Society of Exploration Geophysicists. https://doi.org/https://doi.org/10.1190/1.9781560801740

Refrizon, R., Hadi, A. I., Lestari, K., & Oktari, T. (2013). Analisis Percepatan Getaran Tanah Maksimum dan Tingkat Kerentanan Seismik Daerah Ratu Agung Kota Bengkulu. Prosiding SEMIRATA 2013, 1(1).

Risa, I.N., Maison, & Dewi, I.K. (2021). Analisis Kerentanan Tanah Berdasarkan Pengukuran Mikrotremor di Desa Jati Mulyo, Tanjung Jabung Timur. JGE (Jurnal Geofisika Eksplorasi), 09(01), 18-31.

Setiyono, U. (2018). Katalog Gempabumi Signifikan dan merusak 1821-2017. Badan Meteorologi Klimatologi dan Geofisika. https://perpustakaan.bnpb.go.id/bulian/index.php?p=show_detail&id=1860

Surono. (2013). Lengan Tenggara Sulawesi. Bandung Badan Geologi Kementrian Energi dan Sumber Daya Mineral.

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Published

2023-11-29

How to Cite

Rubaiyn, A., Hamimu, L., & Mukarramah, M. (2023). MIKROZONASI TINGKAT KERENTANAN LAPISAN TANAH KECAMATAN NAMBO, KENDARI MENGGUNAKAN METODE HORIZONTAL-TO-VERTICAL SPECTRAL RATIO. JGE (Jurnal Geofisika Eksplorasi), 9(3), 194–205. https://doi.org/10.23960/jge.v9i3.292

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