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Journal : Journal of Geoscience, Engineering, Environment, and Technology

Seismic Vulnerability Analysis Using the Horizontal to Vertical Spectral Ratio (HVSR) Method on the West Palu Bay Coastline Amirudin; Madrinovella, Iktri; Sofian
Journal of Geoscience, Engineering, Environment, and Technology Vol. 8 No. 02-2 (2023): Special Issue from The 1st International Conference on Upstream Energy Techn
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2023.8.02-2.13879

Abstract

This research was carried out to make a map of the dominant frequency (f0), amplification factor (A0), seismic susceptibility index (Kg), Vs30, Sediment Layer Thickness (H) and Peak ground acceleration (PGA). Microtremor measurements were carried out with a three-component seismometer of the TDL-303S type as many as 27 measurement points. The data was analyzed by the Horizontal to Vertical Spectral Ratio (HVSR) method. The PGA calculation was carried out using the Kanai equation with a reference to the Palu-Donggala earthquake on September 28, 2018. The results showed that the distribution of the dominant frequency value (f0) ranged from 0.4149 Hz-0.8869 Hz, the soil amplification factor (A0) ranged from 2,199–4,884, the seismic vulnerability index (Kg) ranged from 8.79 s2/cm-41.41 s2/cm, the shear wave velocity to a depth of 30 meters ( Vs30) ranged from Vs30 197.7 m/s-320.2 m/s , the thickness of the sedimentary layer ranges from 260.3 m-291.1 m and the peak ground acceleration (PGA) of Kanai ranges from 137.3 gal – 234.2 gal by using Mw 7.4 earthquakes with an intensity scale (MMI) VI to VII. The coastal area of West Palu bay has an intermediate seismic vulnerability II to a high seismic vulnerability IV so that it will be vulnerable in the event of an earthquake disaster. Areas that have a very high vulnerability index are in the upper western and easternmost regions while those with a lower level tend to have a lower vulnerability index value.
Co-Authors A. Fathoni A. Gani, A. Abdul Ghofururrohim Abdul Hafidz Adi muhyidin Abdul Karim Abdullah, Wahyuddin Abri Achmad Junaedi Sitika Adhi Kusmantoro Adhi Kusmantoro Afifah Az-Zahra AFIFAH, UMI Agus Susanto Ahmad Maulana Irfanudin Ahmad Nuural Karim Ainul Gani Ainun Haq, Vick Ajat Rukajat Akil Akriandi Amin Alfani, Mufti Hasan Ali Baihaqi, Irfan Ali, Achmad Faruq Alifiah Nursifa Amelia Sapitri Amin Hidayat Angga Kusuma, Angga Anisa Ayu Lestari Arief Firmansyah Awaludin Ayu Gita Lestari Ayuningtyas, Devya Malika Azka Ubaidillah Azzahra, Nurqomariah Berlian Hanum Salasabilah Budi Eko Soetjipto Cahaya Kesuma, Guntur CANDRA GUNAWAN Dessy Sasmita Dewi Nur Fariida Dhanny, Omar Diana Azwina Dr. Ir. Hj. Andi Marini Indriani, S. T., M. T Fachrudin Udin Faijin Faisal Faisal Fariyanti Ferianto Fitriyadi, Muhammad Gasmi, Nur Muhammad Ghani, Ainal Gunistiyo Guntur Cahaya Kesuma Hala, A. Fathurrahman Hamzah, Muhammad Zaki Hamzah, Zulfadli Hasdinawati Hazima, Tsamara Aqila Hendra, Dede Hendrika Frans Telaumbanua Heri Pratikto Iktri Madrinovella Ilma Fauziah Ina Sintya, Putri Indra Wahyudi Ir. Gunaedy Utomo, S. T., M. T Isa Asyrofuddin, Muhammad Jaenullah Jainuddin Jajat Darojat Jalaludin Jumri Khadafi, Meyke Hazad Larasati, Zu'ama Anggun Luthfia Hanifatus Saiyidah Luthfio Febri Trihandika M. Akmansyah M. Hudri Masyitah Mella Yunita Milla Rusydiana Mimin Maryati Mishel, Valesia Mohammad Fathi Royyani, Mohammad Fathi Muhammad Akmansyah Muhammad Arif Muhammad Kadafi Muin, Rahmawati Nanda Inka Fitri Neng Sri Lathifah Zulfa Niken Setiawati Nugraha, Danyu Nugraha, Hendra Nuraini, Putri Nurdin, Ambia Nurjanah Nurlela Nurmaya, Alya Nurul Izzah Mulyani Parakkasi, Idris Patabang, Lewi pengelola, pengelola Puti Sahara Putri Nur Afifah QONITA Rafiun, Afif Rahayu, Joyya Ratna Wulaningrum Redho Qurrota A’yun, Ahmad Rodiallah Ma, Alkaf Rudzali, Achmad Saeful Ahyar, Ahmad Sailawati Sam Cay Sandi Saputra Saputra, Heri Soeprijanto Sofian Sumariana, I Made Sumarlin Susilawati, Reni Susy Rosyida Suwandi SUYONO Syaiful Islami Syaiful Rahman Taufik Awaludin Udin, Fachrudin Umar Vikra Seifahlepi Wahyu Nurul F. Wajd, Farid Yadi Fahmi Arifudin Yuliharti Zahara Zahra Maharani Zjulpi Andriansah Zulkifli