التفاصيل البيبلوغرافية
| العنوان: |
Estimation of peak ground acceleration around lake Toba, North Sumatra, Indonesia from the measurement of horizontal-to-vertical spectral ratio. |
| المؤلفون: |
Anggono, Titi, Syuhada, Syuhada, Handayani, Lina, Mukti, Muhammad Ma'ruf, Lubis, Ashar Muda, Saputra, Frilla Renty Tama, Gaol, Karit Lumban, Sudrajat, Yayat, Febriani, Febty, Hasib, Mohammad, Prasetio, Aditya Dwi, Ramdhan, Mohamad, Dewi, Cinantya Nirmala, Sulaiman, Albertus |
| المصدر: |
AIP Conference Proceedings; 2024, Vol. 3095 Issue 1, p1-7, 7p |
| مصطلحات موضوعية: |
GROUND motion, EQUATIONS of motion, FAULT zones, EARTHQUAKES, HAZARD mitigation, VOLCANIC eruptions, NATURAL disaster warning systems |
| مصطلحات جغرافية: |
SUMATERA Utara (Indonesia), SUMATRA (Indonesia) |
| مستخلص: |
North Sumatra region is located at the plate boundary of Indo-Australian and Eurasian Plates. The plate boundary is characterized by high seismicity due to the subduction and Sumatra fault zones. One of the main tourist attractions in North Sumatra is Lake Toba, a large caldera formed due to Mt. Toba eruption. In recent years, it has become one of the most attractive destinations in Indonesia. Due to rapid development around this region, it is necessary to understand the seismic risk for hazard mitigation. First, Microzonation analysis is carried out from the installed temporary short-period seismometers around Lake Toba region. Then we estimate the peak ground acceleration (PGA) from the obtained horizontal-vertical spectral ratio (HVSR) using four ground motion equations. We use three earthquake sources (Mw 6.7 2011, Mw 6.3 2020, and Mw 5.7 2022) that occurred in North Sumatra to calculate the PGA. We obtained that the ground motion equations give different values of PGA. The highest PGAs ∼110 gal were estimated from Mw 5.7 2022 earthquake using Tong and Katayama ground motion equation at an epicenter distance of 15 km. However, further analysis are still needed, especially from strong motion data observations to verify our observation. We hope this preliminary result may provide information for future analysis for disaster risk reduction. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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