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Journal : Civil Engineering Journal

Vulnerability Index Assessment for Mapping Ground Movements Using the Microtremor Method as Geological Hazard Mitigation Adi Susilo; Siti Zulaikah; A. Fauzi Pohan; M. Fathur Rouf Hasan; Farizky Hisyam; Siti Rohmah; M. Aryono Adhi
Civil Engineering Journal Vol 10, No 5 (2024): May
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-05-017

Abstract

Various geological disasters, such as landslides and ground movements, occur annually in Srimulyo Village, Malang District, with varying levels of damage. Ground movements can affect structures built above, causing sinking, cracking, and collapse. Research into landslides and ground movements triggered by vibrations is generally conducted using the microtremor method, which has proven effective. This study uses the microtremor method to map the soil condition that is potentially prone to movement or landslides based on the observed soil vulnerability index. Data was collected using a TDL 303s Digital Portable Seismograph instrument; the measurement points were established in the form of a grid distributed across the research area, with a recording duration of approximately 45 minutes at each point. The analysis technique utilizes the Horizontal Vertical Spectrum Ratio (HVSR) based on the Fast Fourier Transform (FFT) principle. The study’s results found that the research location’s seismic vulnerability index varies between 6.5 and 16.5. Areas with high seismic vulnerability index values, specifically those with Kg>11.5, are scattered on the west, south, and southeast sides of the research location. Based on field observations, these areas are dominated by relatively thick sediment layers, leading to lower dominant frequency values and higher amplification values; consequently, the seismic vulnerability index in the southern region is also high. Doi: 10.28991/CEJ-2024-010-05-017 Full Text: PDF
Co-Authors A. Fauzi Pohan A.A. Ketut Agung Cahyawan W Adam Ardiansyah Adi Susilo Agus Subekti Agus Subekti Agus Suprianto Aji Purwinarko, Aji Ari Setiawan Ari Setiawan Bambang Subali Bilqis El Farsiyyi, Billqis El Farsiyyi Budi Astuti Budi Eka Nurcahya Budi Eka Nurcahya, Budi Eka Budi Naini Mindyarto, Budi Naini Budi Wibowo, Nugroho Cindiwati Danastri L. P. Tampubolon Desi Mustami Limayukha, Desi Mustami Limayukha Ellianawati, Ellianawati Elsa Fadlika Widyantari, Elsa Fadlika Widyantari Farizky Hisyam Fatoni, Iza Handayani, Alifa Tri Herdiyanti, Enesty Ilqia Rahma, Ilqia Rahma Lestari, Putri Yunia M. Fathur Rouf Hasan Maulida Nur Azzahra Minhat, Minhat Muh Sarkowi Muttaqin, Rudhotul Muzli, Muzli Nanik Wijayati Noor, Yusmaniar Afifah Nugroho Budi Wibowo Nuni Widiarti Nurul Priyantari Parmin Pratiwi Dwijananti Prayitno, Wasi Sakti Wiwit Putra, Bayu Ramadhani Putra, Ngurah Made Darma Putut Marwoto Rahmania Sofyana Ulya, Rahmania Sofyana Ulya Rina Dwi Indriana Rooseno, Yohan Rr. Sri Endang Pujiastuti S Mursiti Sarwi Sismanto Sismanto Siti Rohmah Siti Wahyuni Siti Zulaikah Sofian, Sofian Sorja Koesuma Sudarmin Sudarmin Sudarmin Sudarmin Suharto Linuwih Sujabar, Sujabar Sulaiman, Ryan Sunyoto Eko Nugroho, Sunyoto Eko Supriyadi Supriyadi Supriyadi Supriyadi Supriyadi Suryanto, Wiwit Suyanto Suyanto Talitha Widiatningrum Tamba, Shallsa Bella. W Ummi Fauziyah Wahyu Hardyanto Wahyudi Wahyudi Wahyudi Wahyudi Wahyudi Wahyudi Wiyanto - Yayuk Tutiek Supriyanti Yosephine Debbie Damayanti Yosepphiene Debbie Damayani Yusof, Mohammad Mubarrak Mohd