Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions
The Horizontal to Vertical Spectral Ratio (HVSR) is a seismic analysis method used to obtain information about subsurface geological characteristics. This method is based on the spectral ratio analysis between the horizontal and vertical components of earthquakes or other vibration sources. HVSR has...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/101/e3sconf_icdmm2023_01006.pdf |
| _version_ | 1797345051737587712 |
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| author | Baharuddin Faris Zuhair Mohammad Kurniawan Suhardja Sandy Pranata Bayu Prayitno Adi Suko |
| author_facet | Baharuddin Faris Zuhair Mohammad Kurniawan Suhardja Sandy Pranata Bayu Prayitno Adi Suko |
| author_sort | Baharuddin Faris Zuhair Mohammad |
| collection | DOAJ |
| description | The Horizontal to Vertical Spectral Ratio (HVSR) is a seismic analysis method used to obtain information about subsurface geological characteristics. This method is based on the spectral ratio analysis between the horizontal and vertical components of earthquakes or other vibration sources. HVSR has proven to be an effective tool in evaluating rock layers, layer thickness, rock hardness, and geological hazard potential. In the HVSR method, seismic data are measured using three-component seismometers, the N-S (North-South), E-W (East-West), and vertical components. In this study, the HVSR method is used for Vs30 inversion to estimate shear wave velocity at a depth of 30m. The southern and western regions of Sulawesi have various geological conditions and high seismicity levels. The results of this inversion can be used for mapping soil vulnerability indices. The obtained soil vulnerability index values indicate high vulnerability near the Palu-Koro fault, with A0 9.27 at F0 3.2 Hz. This method can also estimate shear wave velocity values at a depth of 30 m. Vs30 values range from 200 m/s to 500 m/s at various measurement points, indicating variability. According to the SNI 1726:2012 and NEHRP classifications, the research area has soil conditions ranging from medium to soft. |
| first_indexed | 2024-03-08T11:11:49Z |
| format | Article |
| id | doaj.art-dd11b191bc64452caf9efd440fc85401 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-08T11:11:49Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-dd11b191bc64452caf9efd440fc854012024-01-26T10:41:45ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014640100610.1051/e3sconf/202346401006e3sconf_icdmm2023_01006Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi RegionsBaharuddin Faris Zuhair Mohammad0Kurniawan Suhardja Sandy1Pranata Bayu2Prayitno Adi Suko3Geophysics Engineering Student of Pertamina UniversityGeophysics Engineering Lecturer of Pertamina UniversityMeteorology, Climatology, and Geophysics AgencyMeteorology, Climatology, and Geophysics AgencyThe Horizontal to Vertical Spectral Ratio (HVSR) is a seismic analysis method used to obtain information about subsurface geological characteristics. This method is based on the spectral ratio analysis between the horizontal and vertical components of earthquakes or other vibration sources. HVSR has proven to be an effective tool in evaluating rock layers, layer thickness, rock hardness, and geological hazard potential. In the HVSR method, seismic data are measured using three-component seismometers, the N-S (North-South), E-W (East-West), and vertical components. In this study, the HVSR method is used for Vs30 inversion to estimate shear wave velocity at a depth of 30m. The southern and western regions of Sulawesi have various geological conditions and high seismicity levels. The results of this inversion can be used for mapping soil vulnerability indices. The obtained soil vulnerability index values indicate high vulnerability near the Palu-Koro fault, with A0 9.27 at F0 3.2 Hz. This method can also estimate shear wave velocity values at a depth of 30 m. Vs30 values range from 200 m/s to 500 m/s at various measurement points, indicating variability. According to the SNI 1726:2012 and NEHRP classifications, the research area has soil conditions ranging from medium to soft.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/101/e3sconf_icdmm2023_01006.pdf |
| spellingShingle | Baharuddin Faris Zuhair Mohammad Kurniawan Suhardja Sandy Pranata Bayu Prayitno Adi Suko Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions E3S Web of Conferences |
| title | Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions |
| title_full | Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions |
| title_fullStr | Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions |
| title_full_unstemmed | Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions |
| title_short | Seismic microzonation based on HVSR inversion results for shear wave (Vs30) mapping and soil vulnerability in West Sulawesi and South Sulawesi Regions |
| title_sort | seismic microzonation based on hvsr inversion results for shear wave vs30 mapping and soil vulnerability in west sulawesi and south sulawesi regions |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/101/e3sconf_icdmm2023_01006.pdf |
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