مجله ژئوفیزیک ایران

مجله ژئوفیزیک ایران

Seismic vulnerability and sediment thickness assessment using HVSR in Musi Banyuasin district, south Sumatra

مقالات آماده انتشار

نوع مقاله : مقاله پژوهشی‌

نویسندگان
Agustya Adi Martha 1
Dwi Miftahuljanah.S 2
Nurul Hudayat 3
Muh Sarkowi 4
Tio Azhar Prakoso Setiadi 5
1 Associate Professor, National Research and Innovation Agency, Bogor, Indonesia
2 Bachelor, Geophysical Engineering, Universitas Lampung, Sumantri Brojonegoro Lampung, Indonesia
3 M.Sc., National Research and Innovation Agency, Bogor, Indonesia
4 Professor,Geophysical Engineering, Universitas Lampung, Sumantri Brojonegoro Lampung, Indonesia
5 Bachelor, National Research and Innovation Agency, Bogor, Indonesia
10.30499/ijg.2025.526698.1705
چکیده
Indonesia, located at the convergence of active tectonic plates, is highly susceptible to earthquakes. Musi Banyuasin District in South Sumatra is one of the regions characterized by complex geological structures and potential seismic hazards. This study investigates sediment thickness and seismic vulnerability index as key parameters for evaluating local site effects. The Horizontal to Vertical Spectral Ratio (HVSR) method was applied to analyze dominant frequency (f₀), amplification factor (A₀), dominant period (T₀), seismic vulnerability index (Kg), and sediment thickness (H). The results show that dominant frequency ranges from 2 to 18 Hz, amplification values vary between 1.6 and 5.2, dominant period spans 0.04–0.38 s, seismic vulnerability index ranges from 0.2 to 3.2, and sediment thickness varies from 8 to 64 m. The majority of the study area is classified as type I soil with hard rock formations based on frequency and period parameters. Overall, the low amplification and seismic vulnerability index values indicate a relatively minimal potential for severe earthquake damage. These findings provide new insights into the subsurface conditions of Musi Banyuasin and highlight their relevance for disaster risk reduction. The results can serve as a scientific basis for future land-use planning and construction strategies aimed at mitigating seismic risk in the region.
 
کلیدواژه‌ها
HVSR, Musi Banyuasin, earthquake, local site effect, mitigation

موضوعات

عنوان مقاله English

Seismic vulnerability and sediment thickness assessment using HVSR in Musi Banyuasin district, south Sumatra

نویسندگان English

Agustya Adi Martha 1
Dwi Miftahuljanah.S 2
Nurul Hudayat 3
Muh Sarkowi 4
Tio Azhar Prakoso Setiadi 5
1 Associate Professor, National Research and Innovation Agency, Bogor, Indonesia
2 Bachelor, Geophysical Engineering, Universitas Lampung, Sumantri Brojonegoro Lampung, Indonesia
3 M.Sc., National Research and Innovation Agency, Bogor, Indonesia
4 Professor,Geophysical Engineering, Universitas Lampung, Sumantri Brojonegoro Lampung, Indonesia
5 Bachelor, National Research and Innovation Agency, Bogor, Indonesia
چکیده English

Indonesia, located at the convergence of active tectonic plates, is highly susceptible to earthquakes. Musi Banyuasin District in South Sumatra is one of the regions characterized by complex geological structures and potential seismic hazards. This study investigates sediment thickness and seismic vulnerability index as key parameters for evaluating local site effects. The Horizontal to Vertical Spectral Ratio (HVSR) method was applied to analyze dominant frequency (f₀), amplification factor (A₀), dominant period (T₀), seismic vulnerability index (Kg), and sediment thickness (H). The results show that dominant frequency ranges from 2 to 18 Hz, amplification values vary between 1.6 and 5.2, dominant period spans 0.04–0.38 s, seismic vulnerability index ranges from 0.2 to 3.2, and sediment thickness varies from 8 to 64 m. The majority of the study area is classified as type I soil with hard rock formations based on frequency and period parameters. Overall, the low amplification and seismic vulnerability index values indicate a relatively minimal potential for severe earthquake damage. These findings provide new insights into the subsurface conditions of Musi Banyuasin and highlight their relevance for disaster risk reduction. The results can serve as a scientific basis for future land-use planning and construction strategies aimed at mitigating seismic risk in the region.
 

کلیدواژه‌ها English

HVSR, Musi Banyuasin, earthquake, local site effect, mitigation
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مجله ژئوفیزیک ایران

مقالات آماده انتشار، پذیرفته شده
انتشار آنلاین از 08 مهر 1404