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Journal : Journal of Physics and Its Applications

PGA Estimation of 346 Points in West Sumatra based on Earthquakes Scenario in West Pasaman with Si and Midorikawa Formula Ramadhan, Wahyu; Syafriani, Syafriani; Fauzi, Ahmad; Dwiridal, Letmi
Journal of Physics and Its Applications Vol 6, No 2 (2024): May 2024
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v6i2.20795

Abstract

There was a destructive earthquake on February 25, 2022, at 08:39:29 WIB with a magnitude of 6,1 Mw that struck western Sumatra with an epicenter on land, and was located on a blind fault. The impact of the earthquake was felt quite widely in all Regencies/Cities in West Sumatra with an intensity of IV – VIII MMI. The earthquake caused damage, an estimated 6627 houses, 70 mosques, 41 offices, 208 schools, 25 medical infrastructure and 5 bridges. Therefore, it is necessary to conduct research in the province of West Sumatra on PGA using the Si and Midorikawa method and intensity with Murphy O'Brein's empirical formulation as an effort to mitigate earthquake disasters. This study aims to determine PGA as the level of earthquake activity and intensity as a measure of the damage caused by earthquakes and to analyze their distribution maps. The data used is earthquake data for the period 1936-2022 with a magnitude ≥ 5 Mw and a depth of ≤ 70 km sourced from the catalog of the National Earthquakes Information Center U.S Geological Survey (NEIC/USGS). The results of data processing produce PGA values in West Sumatra ranging from 0.4083 – 782.9839 gal with an intensity (MMI) ranging from I – IX MMI. Map of distribution of PGA values and the highest intensity is in West Pasaman Regency and the lowest value is in Mentawai Islands Regency. The West Pasaman Regency area and its surroundings should meet the requirements for earthquake-resistant buildings, because they have a fairly high PGA value.
Co-Authors - Hamdi AA Sudharmawan, AA Abda Abda Aditio, Rama Ahmad Fajrin Ahmad Fauzi Akmam Akmam Akmam Amali Putra Amirullah, Fajar Fikri Andini, Ulvia Sepra Andriani, Welli Annisa Rahma Jelita Asrizal Delima Putri Denandra, Alza Dhea Fitria Elizha, Zellvia Emiliannur Emiliannur Emriska, Vellya Ramadhani Fadhila Ulfa Jhora Farras Drasih, Nabilah Fatni Mufit Fauzi Ahmad Muda Festiyed Florentina Simalango, Nora Fortuna, Aprilla Fuja Novitra Gusnedi Gusnedi Hamdi Hamdi Hamdi Hamdi Hamdi Hamdi Rifai Handayani, Silvia Sri Harman Amir hidayanti, hidayanti Hidayati Hidayati Hidayati Hidayati Hufri Hufri Husna, Azmi Asmaul Ikram, Riziqul Kiroomin Barorotin Muji Kolotosa, Julio Fadjar lara agustia Linda Susanti Madinah, Nur Mahrizal Mahrizal Maidani, Delvi Putri Marlina Alimir Mesi, Mesi Mia Cahyanti Muhammad Hafiz Murtiani Murtiani Mutiara Novichri, Viona Nengsih, Reni Fitria Nofi Yendri Sudiar Nur Azizah Percindira, Ella Dwi Putri Dwi Sari Putri Dwi Sundari Putri, Ulfa Haldiani Putri, Zakiah Putri Rahmat Hidayat Rahmy Novia Ratnawulan . Renol Afrizon Resa, Jerrifel Rata Resi Silvianis Resti Sundari rina, rina novita Salsabila, Salsabila Saqilah, Alya Sari, Nurul Fadillah Silvi Yulia Sari Siska Fitri Alwi Sri Ayu Wahyuni Sudiar, Novi Yendri Syafriani Syafriani Syafriani Syafriani Syafriani, Syafriani Syafriani, - Ulfa Jhora, Fadhila Wahyu Ramadhan Wahyuni Satria Dewi Wulandari, Mia Yana Ramadhani Yendri Sudiar, Nofi Yurnetti Yurnetti Yusrila, Yoga Zainul Adha Zatil Ismah, Amirah Zikri, Ahmad Raihan zu, Zurahma Zulhendra Zulhendra