Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor
Kathmandu Valley situated in Nepal has experienced several earthquakes in the past. The expanding population of Kathmandu Valley is driving a significant acceleration in building construction reaching record levels and posing risks to both human lives and the economy, despite this surge in developme...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Oxford University Press
2024
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| Online Access: | http://psasir.upm.edu.my/id/eprint/113732/ http://psasir.upm.edu.my/id/eprint/113732/1/113732.pdf |
| _version_ | 1848866306367946752 |
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| author | Poudyal, Dibyashree Nordin, Norhaiza Roslan, Siti Nur Aliaa Dahal, Bhim Kumar |
| author_facet | Poudyal, Dibyashree Nordin, Norhaiza Roslan, Siti Nur Aliaa Dahal, Bhim Kumar |
| author_sort | Poudyal, Dibyashree |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Kathmandu Valley situated in Nepal has experienced several earthquakes in the past. The expanding population of Kathmandu Valley is driving a significant acceleration in building construction reaching record levels and posing risks to both human lives and the economy, despite this surge in development. This study aimed to spatially map the dominant frequency, amplification factor, and vulnerability index map of Kathmandu Valley, Nepal using ArcGIS. This paper presents the nonlinear response analysis of 225 boreholes using the Gorkha earthquake as input motion and DEEPSOIL software for determining the amplification ratio and dominant frequency. The results revealed a range of values for dominant frequency from 0.08 to 7.65 Hz and soil amplification ratio from 0.13 to 8.14. Furthermore, the seismic vulnerability index was derived from the dominant frequency and soil amplification ratio ranging from 0.22 to 21.84. The resulting maps acquired through this study enable the decision-makers and stakeholders, to pr ior itize resources and implement targeted measures for enhancing seismic resilience in the region. © The Author(s) 2024. |
| first_indexed | 2025-11-15T14:18:30Z |
| format | Article |
| id | upm-113732 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:18:30Z |
| publishDate | 2024 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1137322025-01-15T07:45:27Z http://psasir.upm.edu.my/id/eprint/113732/ Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor Poudyal, Dibyashree Nordin, Norhaiza Roslan, Siti Nur Aliaa Dahal, Bhim Kumar Kathmandu Valley situated in Nepal has experienced several earthquakes in the past. The expanding population of Kathmandu Valley is driving a significant acceleration in building construction reaching record levels and posing risks to both human lives and the economy, despite this surge in development. This study aimed to spatially map the dominant frequency, amplification factor, and vulnerability index map of Kathmandu Valley, Nepal using ArcGIS. This paper presents the nonlinear response analysis of 225 boreholes using the Gorkha earthquake as input motion and DEEPSOIL software for determining the amplification ratio and dominant frequency. The results revealed a range of values for dominant frequency from 0.08 to 7.65 Hz and soil amplification ratio from 0.13 to 8.14. Furthermore, the seismic vulnerability index was derived from the dominant frequency and soil amplification ratio ranging from 0.22 to 21.84. The resulting maps acquired through this study enable the decision-makers and stakeholders, to pr ior itize resources and implement targeted measures for enhancing seismic resilience in the region. © The Author(s) 2024. Oxford University Press 2024 Article PeerReviewed text en cc_by_4 http://psasir.upm.edu.my/id/eprint/113732/1/113732.pdf Poudyal, Dibyashree and Nordin, Norhaiza and Roslan, Siti Nur Aliaa and Dahal, Bhim Kumar (2024) Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor. Journal of Geophysics and Engineering, 21 (4). pp. 1272-1285. ISSN 1742-2132; eISSN: 1742-2140 https://academic.oup.com/jge/article/21/4/1272/7696738 10.1093/jge/gxae069 |
| spellingShingle | Poudyal, Dibyashree Nordin, Norhaiza Roslan, Siti Nur Aliaa Dahal, Bhim Kumar Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor |
| title | Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor |
| title_full | Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor |
| title_fullStr | Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor |
| title_full_unstemmed | Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor |
| title_short | Spatial mapping of the seismic vulnerability index in Kathmandu Valley: insight from dominant frequency and amplification factor |
| title_sort | spatial mapping of the seismic vulnerability index in kathmandu valley: insight from dominant frequency and amplification factor |
| url | http://psasir.upm.edu.my/id/eprint/113732/ http://psasir.upm.edu.my/id/eprint/113732/ http://psasir.upm.edu.my/id/eprint/113732/ http://psasir.upm.edu.my/id/eprint/113732/1/113732.pdf |