Seismic Site Characterization Using Horizontal-to-Vertical Spectral Ratio (HVSR) Analysis of Ambient Noise at Sukasari Village, Sumedang, West Java

Dimastian Hari Susetyo; Jamaluddin  Jamaluddin; Yudi Rosandi

doi:10.22373/p-jpft.v12i2.34442

Authors

Dimastian Hari Susetyo Department of Geophysics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, West Java, Indonesia
Jamaluddin Jamaluddin Department of Geophysics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, West Java, Indonesia
Yudi Rosandi Department of Geophysics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, West Java, Indonesia

DOI:

https://doi.org/10.22373/p-jpft.v12i2.34442

Keywords:

Horizontal-to-Vertical Spectral Ratio, Dominant Frequency, Dominant Period, Seismic Vulnerability Index, Amplification Factor

Abstract

Local geological conditions can significantly influence seismic wave amplification during earthquakes, particularly in regions composed of unconsolidated volcanic deposits. This study aims to characterize the seismic site conditions of Sukasari Village, Sumedang Regency, West Java, using the Horizontal-to-Vertical Spectral Ratio (HVSR) method based on ambient seismic noise measurements. A total of 72 microtremor measurement points were distributed across the study area to capture spatial variations in near-surface geological conditions. HVSR analysis was conducted to determine key parameters, including dominant frequency (), amplification factor (), dominant period (), and the seismic vulnerability index (). The results show that values range from 1.1 to 19.1 Hz, ranges from 0.058 to 1.788 s, ranges from 1.4 to 7.3, and ranges from 1.0 to 22.8, indicating significant variations in sediment thickness and subsurface stiffness across the study area. Areas characterized by low values and high and are associated with thick unconsolidated sediments that have a higher potential for seismic wave amplification, whereas areas with high F₀ and low Kg correspond to compact volcanic formations with relatively stable ground conditions. These findings demonstrate that the HVSR method effectively identifies spatial variations in local site response and provides important information for seismic microzonation and earthquake-resilient land-use planning in Sukasari Village.

Author Biography

Dimastian Hari Susetyo, Department of Geophysics, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, West Java, Indonesia

A student of the Geophysics Program at Padjadjaran University's Faculty of Mathematics and Natural Sciences

References

Acerra, C., Aguacil, G., Anastasiadis, A., Atakan, K., Azzara, R., Bard, P.-Y., Basili, R., & Zacharopoulos, S. (2004). Guidelines for the Implementation Technique on Ambient Vibrations of the H/V Spectral Ratio Technique on Ambient Vibrations. European Commision - Research General Directorate, (Project No.D23.12).

Araque-Perez, C. J. (2024). Reevaluating soil amplification using multi-spectral HVSR technique in La Chana Neighborhood, Granada, Spain. Journal of Seismology, 28(4), 921–949. https://dx.doi.org/10.1007/s10950-024-10227-2

Aruan, I. H., Yuniardi, Y., Khoirullah, N., & Sophian, R. I. (2024). Peta Rawan Longsor Desa Nanggerang, Kecamatan Sukasari, Kabupaten Sumedang, Jawa Barat Menggunakan Analisis Kestabilan Lereng Tiga Dimensi. Bulletin of Scientific Contribution : GEOLOGY, 22(2), 183–194.

Azifah, G. B., Fathani, T. F., & Setiawan, H. (2025). Seismic microzonation studies in the Southern part of Progo River, special Region of Yogyakarta, Indonesia. Geoenvironmental Disasters, 12(1). https://doi.org/10.1186/s40677-025-00310-2

BPS Kabupaten Sumedang. (2024). Kecamatan Sukasari Dalam Angka 2024.

Gosar, A. (2010). Site effects and soil-structure resonance study in the Kobarid basin (NW Slovenia) using microtremors. Natural Hazards and Earth System Sciences, 10(4), 761–772. https://doi.org/10.5194/nhess-10-761-2010

Ibs-von Seht, M., & Wohlenberg, J. (1999). Microtremor measurements used to map thickness of soft sediments. Bulletin of the Seismological Society of America, 89(1), 250–259. https://doi.org/10.1785/BSSA0890010250

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

Konno, K and Ohmachi, T. (1998). Ground-motion characteristics estimated from spectral ratio between horizontal and vertical components of microtremor. Bulletin of the Seismological Society of America, 88(1), 228–241.

Kramer, S. (1996). Geotechnical earthquake engineering, Englewood Cliffs, NJ: Prentice-Hall.

Lermo, J., & Chávez-García, F. J. (1993). Site effect evaluation using spectral ratios with only one station. Bulletin of the Seismological Society of America, 83(5), 1574–1594. https://doi.org/10.1785/BSSA0830051574

Lunedei, E., & Malischewsky, P. (2015). A Review and Some New Issues on the Theory of the H/V Technique for Ambient Vibrations In: Ansal, A. (eds) Perspectives on European Earthquake Engineering and Seismology. Vol. 39. Springer. https://doi.org/https://doi.org/10.1007/978-3-319-16964-4_15

Molnar, S., Sirohey, A., Assaf, J., Bard, P. Y., Castellaro, S., Cornou, C., Cox, B., Guillier, B., Hassani, B., Kawase, H., Matsushima, S., Sánchez-Sesma, F. J., & Yong, A. (2022). A review of the microtremor horizontal-to-vertical spectral ratio (MHVSR) method. In Journal of Seismology (Vol. 26, Issue 4). Springer Netherlands. https://doi.org/10.1007/s10950-021-10062-9

Nakamura, Y. (1989). A method for dynamic characteristics estimation of subsurface using microtremor on the ground surface. Quarterly Report of RTRI, 30(1), 25–33

Pereira, M. L., Zanon, V., Fernandes, I., Pappalardo, L., & Viveiros, F. (2024). Hydrothermal alteration and physical and mechanical properties of rocks in a volcanic environment: A review. Earth-Science Reviews, 252. https://doi.org/10.1016/j.earscirev.2024.104754

Pranata, B., Yudistira, T., Saygin, S., Cummins, P. R., Widiyantoro, S., Brahmantyo, B., & Zulfakriza. (2018). Seismic microzonation of Bandung basin from microtremor horizontal-to-vertical spectral ratios (HVSR). AIP Conference Proceedings. https://doi.org/10.1063/1.5047289

Saputra, A., Gomez, C., Delikostidis, I., Zawar-Reza, P., Hadmoko, D. S., Sartohadi, J., & Setiawan, M. A. (2018). Determining earthquake susceptible areas southeast of yogyakarta, Indonesia outcrop analysis from structure from motion (SfM) and geographic information system (GIS). Geosciences (Switzerland), 8(4). https://doi.org/10.3390/geosciences8040132

Silitonga, P. H. (2003). Peta Geologi Lembar Bandung.

Stolte, A., Wotherspoon, L., Cox, B., Wood, C., Jeong, S., & Munro, J. (2022). The influence of multiple impedance contrasts on mHVSR site period estimates in the Canterbury Plains of New Zealand and implications for site classification. Earthquake Spectra, 39(1), 288–309. https://doi.org/10.1177/8755293022113076

Supendi, P., Nugraha, A. D., Puspito, N. T., Widiyantoro, S., & Daryono, D. (2018). Identification of active faults in West Java, Indonesia, based on earthquake hypocenter determination, relocation, and focal mechanism analysis. Geoscience Letters, 5(1). https://doi.org/10.1186/s40562-018-0130-y

Susanti, N., Al-Adawiyah, R., Pujaningsih, F. B., Alrizal, & Cipta, A. (2026). Microzonation of Earthquake Hazard Area Using the HVSR Method in The Southern Region of Karangasem Regency. Jurnal Ilmiah Ilmu Terapan Universitas Jambi, 10(1), 255–267. https://doi.org/10.22437/jiituj.v10i1.50891

Vessia, G., Laurenzano, G., Pagliaroli, A., & Pilz, M. (2021). Seismic site response estimation for microzonation studies promoting the resilience of urban centers. Engineering Geology, 284. https://doi.org/10.1016/j.enggeo.2021.106031

Warnana, D. D., Soemitro, R. A. A., & Utama, W. (2011). Aplication of Microtremor HVSR Method for Assessing Site. International Journal of Basic Applied Science, Vol. 11(August).