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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur IJOG : Indonesian Journal on Geoscience GRADIEN Jurnal Fisika Unand Jurnal Fisika FLUX Jurnal Geocelebes Wikrama Parahita : Jurnal Pengabdian Masyarakat Jurnal Penelitian Pendidikan IPA (JPPIPA) Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Spektra: Jurnal Fisika dan Aplikasinya Jurnal Meteorologi Klimatologi dan Geofisika Jurnal Ilmu Fisika Jurnal Pendidikan Fisika dan Teknologi Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Indonesian Physical Review Journal Innovation of Civil Engineering (JICE) Journal of Technomaterial Physics Aceh International Journal of Science and Technology Jurnal Geosaintek
Refrizon Refrizon
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Journal : Jurnal Fisika Unand

 1 
Pemodelan Struktur Bawah Permukaan Berdasarkan Data Mikrotremor di Kecamatan Kampung Melayu, Kota Bengkulu Hutasoit, Tegar Ashary; Refrizon, Refrizon; Suhendra, Suhendra
Jurnal Fisika Unand Vol 14 No 1 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.1.36-44.2025

Abstract

Kampung Melayu District in Bengkulu City is experiencing rapid infrastructure development, necessitating early disaster mitigation efforts. This study aims to model subsurface structures using microtremor data to support earthquake disaster mitigation. Microtremor data were analyzed using the Horizontal to Vertical Spectral Ratio (HVSR) method to produce HVSR curves, which were then inverted to determine stratigraphy based on shear wave velocity (Vs30). The results show that the amplification factor (A0) ranges from 1 to 14.49 H/V, indicating varying soil response to seismic waves. The natural frequency (f0) values range from 0.6 to 8.7 Hz, reflecting differences in soil layer thickness and stiffness. The Vs30 values fall within 189–883.9 m/s, representing variations from soft soil to hard rock layers. These parameters were utilized to create spatial distribution maps, illustrating the area’s subsurface characteristics. Based on the seismic parameter distribution, Kampung Melayu District is classified as a medium-risk earthquake zone. This information is expected to support better decision-making in urban planning, infrastructure development, and disaster mitigation strategies in the future.
Identifikasi Sesar Segmen Ketahun Berdasarkan Metode First Horizontal Derivative (FHD) dan Second Vertical Derivative (SVD) Data Anomali Gaya Berat GGMplus Syaputra, Edo Win; Refrizon, Refrizon; Zakariya, Hilmi
Jurnal Fisika Unand Vol 12 No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.598-607.2023

Abstract

Daerah Bengkulu merupakan daerah yang dilalui oleh jalur subduksi Indo-Australia dan Eurasia. Jalur subduksi dapat teridentifikasi dengan metode gravitasi yang dapat menggambarkan bentuk bawah permukaan berdasarkan variasi medan gravitasi yang dapat dilihat oleh perbedaan rapat masa anatar batuan. Penelitian ini bertujuan untuk mengidentifikasi karakteristik Sesar Segmen Ketahun dengan menggunakan data anomali gayaberat GGMplus. Wilayah penelitian adalah daratan Lebong-Rejang Lebong. Metode First Horizontal Derivative (FHD) dan Second Vertical Derivative (SVD) digunakan untuk melihat posisi dan karakteristik sesar. Dari analisis FHD dan SVD, daerah Sungai Lisai dan Ketenong merupakan sesar turun, sedangkan Pinang Berlapis, sekitar Pungguk Pedaro dan Rimbo Pengadang merupakan sesar naik. Talang Ulu dan sekitar Lubuk Pedaro merupakan sesar naik, Daerah Mangkorajo merupakan sesar geser, serta Danau Tapak Kaki merupakan sesar turun. Berdasarkan pemodelan data anomali diperoleh wilayah Kabupaten Lebong–Rejang Lebong memiliki sebaran densitas antara 1,97 gram/cm3-2,00 gram/cm3 yang merupakan batuan sedimen (debu bersisipan pasir,bongkahan lepas, kerakal, gambut dan kaolinit).
Co-Authors Abimayu, Dadin Mars Agung Satria, Lori Agustina, Tari Al Ansory, Andre Rahmat Al Rafly, Tegar Al-Ansory, Andre Rahmat Amalia, Isra Anggria, Della Cici Ansory, Andre Rahmat Al Apriana, Agnes Apriana, Yelda Apriyanti, Nurul Arif Ismul Hadi Arif Ismul Hadi Arsi, Sefti Dini Arya J Akbar Arya Putra Anggi Awaliyah, Isfardian Agustin Azzahra, Gusti Ayu Zahwa Bernard, Admo Daniel, Adrian Darmawan Ikhlas Fadli Fachri Faisal Fadli, Darmawan Ikhlas Falenia, Felly Farid*, Muchammad Farid, Muchammad Fauzi, M. Wilzam Febriansyah, Gian Ori Fikri, Muhammad Haikal Gayatriani, Intan Gumanty, Usman Halauddin Halauddin Halauddin Hanifah Maulani, Siti Hanipa, Rerisa Al Hardiansyah Hardiansyah Hardiansyah, Debi Harlianto, Budi Helinnes, Putri Henny Johan Herno Yudiansyah Hutasoit, Tegar Ashary Idris, Beni Syakban Ikhlas Fadli, Darmawan Irkhos Irkhos Isfardian Agustin Awaliyah Jaya, Shara Ashari Prana Jaya Kamal, Thomas Mustafa Kamila, Nur Husniatin Kausari, Alfata Khairul Amri Kusuma, Budi Praba Larang, Miranda Puspa Lindung Zalbuin Mase, Lindung Zalbuin M Farid Maesaroh, Rina Maesaroh Maghribi, Faritz Bagda Manurung, Yeni Sartika Misliniyati, Rena Muammar, Zaky Muhammad Dani Muhammad Farid Naldo, Asrol Nanang Sugianto Natasya, Indah Dwi Nazli, Khairun Nurhayati, Ratna Dewi Putri, Aisyah Cindy Phylia Putri, Elona Gita Gatra Putri, Melly Zuhadjar Putriani, Eli Rabbani, M Rifqi Rafly, Tegar Al Rahmat Al-Ansory, Andre Rahmat, Andre Rahmawati, Nurul 'Ilmi Rahmawati, Nurul Ilmi Raihana, Hana Rida Samdara Sahputra, Rio Sapanur, Destika Meisy Saputri, Winda Saragih, Ronni Samuel Sholeha, Della Zakia Suaidi Ahadi Suhendra Suhendra Sumajaya, Erlan Sumanjaya, Erlan - Supriani, Fepy Suwarsono Suwarsono Syah, M. Taufiqqurahman Syaputra, Edo Win Sya’adah, Isni Taufiqurrahman Syah, Muhammad Tri Utami, Olga Triutami, Olga Verentina, Sendiya Yuni Setyowati Zakariya, Hilmi