Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data
Padang City, situated in a seismically active region, faces significant earthquake risk due to its complex geological structure. This study integrates passive seismic and geoelectrical resistivity methods to characterize subsurface conditions and map seismic vulnerability across 11 districts. Passiv...
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| Format: | Article |
| Language: | English |
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University of Brawijaya
2025-07-01
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| Series: | Journal of Degraded and Mining Lands Management |
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| Online Access: | https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17152 |
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| author | Adree Octova Pakhrur Razi Yoszi Mingsi Anaperta |
| author_facet | Adree Octova Pakhrur Razi Yoszi Mingsi Anaperta |
| author_sort | Adree Octova |
| collection | DOAJ |
| description | Padang City, situated in a seismically active region, faces significant earthquake risk due to its complex geological structure. This study integrates passive seismic and geoelectrical resistivity methods to characterize subsurface conditions and map seismic vulnerability across 11 districts. Passive seismic data, collected from 84 microtremor stations, were analyzed using the Horizontal-to-Vertical Spectral Ratio (HVSR) method to derive dominant frequency (f?), amplification factor (A?), and seismic vulnerability index (Kg). High Kg values, indicating elevated seismic amplification potential, were observed in Koto Tangah, Kuranji, and parts of South and West Padang. Subsequently, geoelectrical surveys along five targeted lines revealed subsurface heterogeneities, including groundwater-saturated layers and weak sediment zones that heighten liquefaction risk. The integration of HVSR and resistivity data provided a robust framework for identifying high-risk areas with greater precision than single-method approaches. These findings offer critical input for seismic microzonation and urban disaster mitigation planning, underscoring the need for multi-method geophysical assessments in earthquake-prone urban settings. |
| format | Article |
| id | doaj-art-e7c113dbb4d245bca8b2b37c4bbf868e |
| institution | OA Journals |
| issn | 2339-076X 2502-2458 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | University of Brawijaya |
| record_format | Article |
| series | Journal of Degraded and Mining Lands Management |
| spelling | doaj-art-e7c113dbb4d245bca8b2b37c4bbf868e2025-08-20T02:38:25ZengUniversity of BrawijayaJournal of Degraded and Mining Lands Management2339-076X2502-24582025-07-011248127813710.15243/jdmlm.2025.124.812717154Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity dataAdree Octova0https://orcid.org/0009-0001-6943-1939Pakhrur Razi1https://orcid.org/0000-0003-0598-2560Yoszi Mingsi Anaperta2https://orcid.org/0009-0000-1798-4059Department of Mining Engineering, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25131, Indonesia Center of Disaster Monitoring and Earth Observation, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25131, Indonesia Department of Mining Engineering, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25131, Indonesia Padang City, situated in a seismically active region, faces significant earthquake risk due to its complex geological structure. This study integrates passive seismic and geoelectrical resistivity methods to characterize subsurface conditions and map seismic vulnerability across 11 districts. Passive seismic data, collected from 84 microtremor stations, were analyzed using the Horizontal-to-Vertical Spectral Ratio (HVSR) method to derive dominant frequency (f?), amplification factor (A?), and seismic vulnerability index (Kg). High Kg values, indicating elevated seismic amplification potential, were observed in Koto Tangah, Kuranji, and parts of South and West Padang. Subsequently, geoelectrical surveys along five targeted lines revealed subsurface heterogeneities, including groundwater-saturated layers and weak sediment zones that heighten liquefaction risk. The integration of HVSR and resistivity data provided a robust framework for identifying high-risk areas with greater precision than single-method approaches. These findings offer critical input for seismic microzonation and urban disaster mitigation planning, underscoring the need for multi-method geophysical assessments in earthquake-prone urban settings.https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17152disaster-prone areasgeoelectrical surveyshvsrmappingpadang city |
| spellingShingle | Adree Octova Pakhrur Razi Yoszi Mingsi Anaperta Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data Journal of Degraded and Mining Lands Management disaster-prone areas geoelectrical surveys hvsr mapping padang city |
| title | Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data |
| title_full | Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data |
| title_fullStr | Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data |
| title_full_unstemmed | Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data |
| title_short | Subsurface characterization and seismic risk mapping in Padang City using HVSR and resistivity data |
| title_sort | subsurface characterization and seismic risk mapping in padang city using hvsr and resistivity data |
| topic | disaster-prone areas geoelectrical surveys hvsr mapping padang city |
| url | https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17152 |
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