Identification of Earthquake Hazard Vulnerability in Bengkaung Village, West Lombok Using Geomagnetic Methods

Authors

Muhammad Amin , Hiden Hiden , Suhayat Minardi

DOI:

10.29303/jppipa.v8i2.1338

Published:

2022-04-30

Issue:

Vol. 8 No. 2 (2022): April

Keywords:

Bengkaung, Earthquake, Geomagnetic, Vulnerability

Research Articles

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How to Cite

Amin, M., Hiden, H., & Minardi, S. . (2022). Identification of Earthquake Hazard Vulnerability in Bengkaung Village, West Lombok Using Geomagnetic Methods. Jurnal Penelitian Pendidikan IPA, 8(2), 548–557. https://doi.org/10.29303/jppipa.v8i2.1338

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Abstract

An earthquake disaster is an event that causes various damage and loss of life. This study aims to determine the vulnerability of earthquake hazards in Bengkaung Village, West Lombok Regency. The method used in this research is the geomagnetic method. The results of this: study indicates the value of the magnetic field anomaly in the range of -1100 nT-1500 nT. 2D modeling with 4 paths shows that the study area is dominated by 5 rock layers with a susceptibility range between (0.013 - 6.21)×10^(-3) in SI, which consists of sandstone, clay, fractured andesite lava, fresh andesite lava. and granite. The highest vulnerability to earthquake hazards is in the southern part of Bengkaung Village, due to the presence of a cohesive soil type (like clay) on the surface of the study area, coupled with the presence of intrusions and faults. Meanwhile, the western part of Bengkaung Village and the northern part of the Bengkaung area have a relatively smaller earthquake hazard vulnerability than the southern part. This is because the western and northern parts have the main layer of non-cohesive soil (sandstone) which has high shear strength and becomes a damper in wave propagation when an earthquake occurs

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Author Biographies

Muhammad Amin, University of Mataram

Hiden Hiden, Fisika FMIPA Universitas Mataram

Suhayat Minardi, University of Mataram

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Copyright (c) 2022 Muhammad Amin, Hiden Hiden, Suhayat Minardi

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