Article Per Year (5 Year)
p-Index From 2021 - 2026
3.295
P-Index
This Author published in this journals
All Journal POSITRON JGE (Jurnal Geofisika Eksplorasi) Jurnal Geosaintek Jurnal Fisika FLUX Journal of Geoscience, Engineering, Environment, and Technology JTERA (Jurnal Teknologi Rekayasa) Spektra: Jurnal Fisika dan Aplikasinya Jurnal Geosains dan Teknologi Journal of Multidisciplinary Academic Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Jurnal Abdi Masyarakat Indonesia Journal of Innovation Research and Knowledge Jurnal Geosaintek Global Review of Tourism and Social Sciences
Antosia, Risky Martin
Department Of Geophysical Engineering, Sumatera Institute Of Technology, Jalan Terusan Ryacudu, Way Huwi, Jati Agung, Kabupaten Lampung Selatan, Lampung, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
Aquifer Assessment in the Capit Urang Tourist Area, Metro City: A Vertical Electrical Sounding Approach Sihombing, Josua Nico Batistuta; Hendriyastama, Kemas Daffa; Sipahutar, Andreas; Antosia, Risky Martin
Spektra: Jurnal Fisika dan Aplikasinya Vol. 11 No. 1 (2026): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 11 Issue 1, April 2026
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.111.01

Abstract

This study was conducted in the Capit Urang Tourist Area, Metro City, which is surrounded by rivers and faces problems with turbid well water that cannot be directly used. The research aims to identify subsurface conditions, especially aquifer thickness and depth, and to evaluate the possibility of deeper aquifers with better water quality. The Vertical Electrical Sounding (VES) method with a Schlumberger array was applied at six sounding points with a maximum AB/2 spacing of 100 m. Data were acquired using a Naniura resistivity meter, processed into apparent resistivity, and inverted with IPI2Win software. The results indicate four main subsurface layers with a resistivity pattern of ρ₁ < ρ₂ > ρ₃ < ρ₄. The first layer has a resistivity of 50–150 Ωm and is interpreted as topsoil with a thickness of less than 1.5 m. The second layer has a resistivity of 300–400 Ωm and is interpreted as gravel to a depth of about 6 m. The third layer, with resistivity of 40–70 Ωm, is interpreted as sandstone functioning as an aquifer with a thickness of 10–13 m to a depth of roughly 16 m. The fourth layer, with resistivity of 160–650 Ωm, is interpreted as impermeable bedrock. The aquifer is influenced by river infiltration, leading to turbid groundwater, while the limited electrode span prevented detection of deeper aquifers. Based on lithological interpretation, the aquifer system is classified as an unconfined to semi-unconfined aquifer. These findings provide a scientific basis for groundwater management and for future hydrogeophysical and hydrochemical investigations to improve water-supply sustainability in the Capit Urang Tourist Area.
Identifikasi Zona Lemah Penyebab Amblesan Menggunakan Metode Geolistrik Resistivitas 2D dan Data N-SPT di Wilayah Jakarta Pusat dan Selatan M Ilham Pratama; Habib Mustofa; Risky Martin Antosia; Nur Hidayat
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 23, No 1 (2026): Jurnal Fisika Flux: Jurnal Ilmiah FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v23i1.24831

Abstract

Penelitian ini dilakukan untuk mengidentifikasi potensi amblesan tanah di wilayah Jakarta Pusat dan Jakarta Selatan menggunakan metode geolistrik resistivitas 2D dan data uji Standard Penetration Test (SPT). Data yang digunakan terdiri atas delapan lintasan geolistrik dan tiga titik bor SPT. Pengukuran geolistrik dilakukan menggunakan konfigurasi Wenner-Alpha dengan panjang lintasan 235 m dan spasi elektroda 5 m. Proses inversi menggunakan RES2DINV menghasilkan model resistivitas 0,5–200 Ωm dengan kedalaman penetrasi 35–45 m dan nilai RMSE <7%. Korelasi resistivitas dan N-SPT dianalisis pada setiap kedalaman untuk mengidentifikasi karakter lapisan dan menentukan zona lemah. Hasil penelitian menunjukkan bahwa zona lemah hanya muncul pada Area A (SPT-01) di kedalaman 6–21 m, ditandai oleh resistivitas rendah (3,5–8 Ωm) dan nilai N-SPT sangat rendah (0–4), yang mengindikasikan lapisan tuf pasiran hingga material berbutir halus yang sangat lunak, jenuh air, dan berplastisitas tinggi. Sebaliknya, Area B (SPT-02 dan SPT-03) tidak menunjukkan indikasi zona lemah karena nilai N-SPT relatif tinggi dan stabil pada sebagian besar kedalaman, meskipun resistivitas bervariasi. Kondisi ini menunjukkan bahwa lapisan tanah pada Area B lebih kompak, keras, dan aman terhadap risiko amblesan. Secara keseluruhan, potensi amblesan hanya terkonsentrasi pada Area A, sementara kedua titik lainnya berada dalam kondisi geoteknik yang stabil
Soft Layer Identification in Kedamaian District Using the HVSR-Derived Shear Wave Velocity Distribution Mulyana, Galang Dwi; Antosia, Risky Martin; Nathania, Edlyn Yoadan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): Article in Press - JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Kedamaian District in Bandar Lampung City is a densely populated urban area characterized by complex geological settings that are highly susceptible to seismic amplification and geotechnical hazards. Despite its vulnerability, high-resolution characterization of subsurface soft soil deposits in this specific district remains underexplored. The study aims to evaluate local site effects for designing seismic-resistant infrastructures and mitigating geotechnical hazards. This study attempts to locate and determine the characteristics of soft soil deposits in the Kedamaian District, Bandar Lampung City, by means of the HVSR method (Horizontal to Vertical Spectral Ratio) based on the shear wave velocity distribution result.  Microtremor measurements were taken from 37 points and processed to estimate the amplification factor ( ), dominant frequency of soil deposit ( ), and seismic vulnerability index ( ). HVSR inversion used the Particle Swarm Optimization (PSO) to propose average shear wave velocity down to 30 m depth ( ). Analysis indicated that the amplification values range from 2.31 to 9.11, with most values falling within a moderate level, indicating a moderate local site response. Dominant frequencies range from 0.63 to 18.76 Hz, and higher  values are characteristic of more compact and/or complex rock formations, whilst lower  values correspond to thicker sediments. Values of the seismic vulnerability index range from 0.48 to 119.24 s, with most sites showing a high seismic vulnerability related to the combined effect of high amplification and low dominant frequency. The distribution suggests that the study region consists predominantly of soft soils (type E) with  ranging from 80.9 to 132.6 m/s, interspersed with medium soils (type D) and less abundant hard rocks (type C). The results show that the Kedamaian is primarily covered with soft sediment formations, which have the potential to enhance strong ground motion during seismic events, as well as for a geotechnical investigation database and hazard assessment of earthquake activities and urban development within the region.
Co-Authors Aganda, Riyanto Dedinta Akbar, Hendra Hidayat Al Farishi, Bilal Anas Fauzi Masykuri Andreas Maruli Pakpahan Andri Yadi Paembonan Angga Jati Widiyatama Bilal Al Farishi Depri Dhiba, Farah Dimas Setiawan Dimas Setiawan Ekawati, Gestin Mey Erlangga, Mokhammad Puput Faranabila, Syifa Farduwin, Alhada Farishi, Bilal Al Habib Mustofa Hendriyastama, Kemas Daffa Hissy Ijitiha Sari Hita Kirana Intan Adiani Putri Irawati, Selvi Misna Irawati, Selvi Misnia M Ilham Pratama Muhammad Akhtar, Shan Muhammad Al Fiqri Idham Mulyana, Galang Dwi Natalia, Happy Christin Nathania, Edlyn Yoadan Naufal, Rifqi Andi Nugraha, Purwaditya Nur Hidayat Nur Hidayat Octafiani, Aulia Oryza Sativa, Amelia Pakpahan, Andreas Maruli Prima, Gilbert Purwaditya Nugraha Putri, Intan Andriani Putri, Uci Amelia Putu Pradnya Andika Rahadian, Zatalini Syadni Rahmadani, Putri Amindar Ramdan, Muhammad Reza Rizki Rhahmi Adni Pesma Ruchimat, Acep Ruhul Firdaus Santoso, Nono Agus Sari, Hissy Ijitiha Sihombing, Josua Nico Batistuta Sillak Hasiany Sipahutar, Andreas Syahputra, lan Darma Vigorous Raido Yudha Styawan