Identification of Potential Ground Movement by Ground Shear Strain Analysis Based on Microtremor Data And Earthquake Data Using HVSR Method on The Coastal Land Of Moramo District, South Konawe Regency

Authors

  • Yosep Bastian Ngganggu Jurusan Teknik Geofisika, Universitas Halu Oleo
  • Laode Ihksan Juarzan Jurusan Teknik Geofisika, Universitas Halu Oleo
  • La Hamimu Hamimu Jurusan Teknik Geofisika, Universitas Halu Oleo
  • Indrawati Indrawati Jurusan Teknik Geofisika, Universitas Halu Oleo

DOI:

https://doi.org/10.56099/jrgi.v7i01.39

Keywords:

Ground Shear Strain, HVSR, Mikrotremor, Ground Movement, Moramo District

Abstract

Research has been conducted on GSS (Ground Shear Strain) using the HVSR (Horizontal to Vertical Spectral Ratio) method using microtremor data and earthquake data in coastal areas in Moramo District. This study aims to determine the distribution of GSS values and the potential for land movement based on values based on GSS values in coastal areas of Moramo District. Microtremor data were taken at 15 research points with distances between points of 500-1000 m and  46 earthquake data from the  USGS and BMKG websites. Microtremor data were analyzed using the HVSR method to obtain amplification factor values and dominant frequency values which were then used to calculate seismic vulnerability index values, maximum ground acceleration (PGA), and GSS values. The results of this study show that the GSS value in the coastal area of Moramo District ranges from .  Areas that have the highest GSS values are around Lapuko Village with values that experience cracking phenomena and  the lowest around Marga Cinta Village with values that experience wave and vibration phenomena  . Possible phenomena are vibrations and cracks or soil movement due to settlement pressure

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Published

21-07-2025

How to Cite

Ngganggu, Y. B., Juarzan, L. I., Hamimu, L. H., & Indrawati, I. (2025). Identification of Potential Ground Movement by Ground Shear Strain Analysis Based on Microtremor Data And Earthquake Data Using HVSR Method on The Coastal Land Of Moramo District, South Konawe Regency. Jurnal Rekayasa Geofisika Indonesia, 7(01), 047–058. https://doi.org/10.56099/jrgi.v7i01.39

Issue

Vol. 7 No. 01 (2025): Edisi April JRGI (Jurnal Rekayasa Geofisika Indonesia)

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