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All Journal Jurnal Ilmu Lingkungan Manfish Journal Aceh International Journal of Science and Technology Acta Geoscience, Energy, and Mining Jurnal Geosaintek
Fadhli, zul
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science

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Identification of Slip Surfaces Using Vertical Electrical Sounding Method in Desa Seumadam for The Study of Landslide-Prone Areas Anda, Sabrian Tri; Fajriani, Fajriani; Fajri, Haikal; Fadhli, Zul; Fahril, Muhammad Ari; Putra, Rachmad Almi
Aceh International Journal of Science and Technology Vol 13, No 1 (2024): April 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.1.34605

Abstract

This study explores the application of the Vertical Electrical Sounding (VES) method for identifying potential slip surfaces in the Desa Seumadam region, a known landslide-prone area. By employing geophysical techniques, the assessment has been made in order to delineate the subsurface characteristics for slip surface identification landslide volume estimation. Based on data interpretation regarding the resistivity model of the subsurface in the study area, the slip surface or weak zone is classified as a clay layer underlain by sand and clayey sand layer. The clay is identified with resistivity value varying from 7 54.5 m and located at depth of 6 to 11.68 m while the sand and clayey sand layer are categorized with resistivity value of 4 1395 m with a thickness of 11.68 m. As for the estimation of landslide volume, the calculation was made using the landslide mass volume potential approach and found that the landslide volume is estimated at around 2.139 m3. It is believed that the study not only reveals the potential slip surface of the study area but also enhances the understanding of landslide mechanisms. The findings reveal valuable insights into the geological factors contributing to landslides, facilitating informed decision-making for landslide risk mitigation and land-use planning.
Analisis Spasial Bahaya Gelombang Ekstrem dan Abrasi di Kota Sabang Menggunakan Metode Weighted Overlay QGIS Raza Karmel, Moehammad Ediyan; Fadhli, Zul; Muhni, Akmal; M Muslih, Ali
Jurnal Kelautan, Lingkungan, dan Perikanan Vol 6 No 1 (2025): MANFISH JOURNAL
Publisher : Jurusan Ilmu Kelautan dan Perikanan Politeknik Negeri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31573/manfish.v6i1.1055

Abstract

Daerah pesisir di seluruh dunia, termasuk Kota Sabang di Pulau Weh, Provinsi Aceh semakin rentan terhadap berbagai bahaya alam akibat perubahan iklim, seperti banjir, gelombang badai, dan erosi. Gelombang ekstrim, terutama saat badai berlangsung, dapat mempercepat laju erosi pesisir secara signifikan, mengancam infrastruktur, pemukiman, serta sektor pariwisata dan maritim yang menjadi tulang punggung ekonomi lokal. Tujuan dari penelitian ini adalah untuk membuat penilaian bahaya di kawasan pesisir Kota Sabang terhadap gelombang ekstrim dan abrasi, serta menganalisis faktor-faktor yang memodulasi tingkat risiko. Analisis dilakukan berdasarkan data gelombang historis dari NOAA guna memperkirakan frekuensi dan magnitudo kejadian gelombang ekstrim. Identifikasi area rentan terhadap erosi, banjir, dan abrasi dilakukan dengan software QGIS dengan metode pembobotan (weighted overlay). Faktor-faktor seperti elevasi, geologi, dan kedekatan dengan garis pantai diberikan bobot sesuai panduan dalam Peraturan Kepala Badan Nasional Penanggulangan Bencana (Perka BNPB) tahun 2012. Hasil penelitian menunjukkan bahwa pantai utara, pantai timur dan timur laut Pulau Weh, serta sebagian kecil pantai barat laut berada dalam risiko tinggi terhadap gelombang ekstrem dan abrasi. Dari total area garis pantai sekitar 95 km, enam segmen paparan tinggi dapat diidentifikasi di Kota Sabang. Jumlah panjang garis pantai dari segmen-segmen tersebut adalah 13.979 m atau hampir 14,73% dari keseluruhan area pesisir. Selain itu, penelitian ini menemukan bahwa geomorfologi pesisir dan lingkungan sekitarnya merupakan faktor dengan kontribusi dominan, dibandingkan dengan kenaikan permukaan laut dan tinggi gelombang signifikan.
Flux Analysis with the Application of Darcy’s Law Based on Borehole Data for Sustainable Groundwater Exploitation Fadhli, Zul; Khirnica, Khaira; Syukri, Muhammad; Miska, Layna; Marvita, Yurda; Marwan, Marwan; Dharma, Dian Budi
Jurnal Ilmu Lingkungan Vol 23, No 2 (2025): March 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.2.410-417

Abstract

The potential for groundwater is very large and widely distributed in Aceh Besar District as indicated by the Groundwater Basin map. This potential is supported by the presence of sedimentary deposits consisting of materials such as gravel, sand and clay. This research was conducted to identify the type of aquifer and calculate the amount of groundwater discharge in the district of Aceh Besar. The discharge calculation is carried out using Darcy's Law where this equation can be used to describe the ability of the aquifer to flow through the rock. This study also compares the results of calculating the water discharge using Darcy's Law with the real Pumping Test data. The results showed that the coastal area of Aceh Besar was dominated by confined aquifers with average depth of 40-120 m and thickness of 3-30 m. The results of calculating the water discharge (flux) in the study area were obtained around 3414.61 m/day or equivalent to 39.51 liters/second. The results of comparison with the real Pumping Tes data in segment 2 found that the results of calculating discharge using Darcy's Law were 23.93 liters/second while the results of real Pumping Test were 25.5 liters/second so that the error value found is 6.1%, and in segment 3 the results of calculating discharge using Darcy's Law is 21.88 liters/second while the results of the real Pumping Test are 21 liters/second so that an error value of 4.2%.. From the results of these two comparisons, it can be seen that the calculation of water discharge using Darcy's Law is comparable and has significant results with the results obtained from the real Pumping Test, so that the calculation of water discharge using Darcy's Law can be used for a reference in the groundwater exploitation.
Identifikasi karakteristik akuifer di kawasan perumahan PT. PIM (Pupuk Iskandar Muda) Aceh Utara menggunakan metode geolistrik resistivitas 1-D Miska*, Layna; Fadhli, Zul; Zya, Putroe Salsabilla; Marvita, Yurda; Khirnica, Khaira; Tarmizi, Tarmizi; Hasanah, Uswatun
Acta Geoscience, Energy, and Mining Vol 3, No 2 (2024): June 2024
Publisher : Departemen Teknik Kebumian Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/actaGEM.v3i2.38841

Abstract

Telah dilakukan kajian struktur bawah permukaan untuk mengindentifikasi karakter akuifer di kawasan perumahan PT. Pupuk Iskandar Muda Aceh Utara. Penelitian ini dilakukan menggunakan metode geolistrik Resistivitas 1D dengan konfigurasi Wenner. Pengukuran dilakukan pada 4 titik berdekatan dengan menginjeksikan arus listrik ke bawah permukaan sehingga diperoleh nilai resistivitas setiap lapisan bawah permukaan. Lintasan titik 1 (T1) dan titik 2 (T2) berada di koordinat yang berdekatan dan merupakan zona konservasi sedangkan lintasan titik 3 (T3) dan titik 4 (T4) berada di lapangan, dengan panjang masing-masing lintasan adalah 300 m. Pengolahan data untuk menghasilkan nilai inversi menggunakan perangkat lunak EarthImager 1D. Hasil penelitian menunjukkan adanya Formasi Idi dengan susunan batuan yang terdiri dari kerikil pasir, lempung, dan batu gamping, serta satuan batuan aluvium muda. Pada lokasi penelitian, lapisan pasir (13,8m 23,0m) diinterpretasikan sebagai lapisan akuifer dikarenakan pasir memiliki nilai porositas dan permeabilitas yang sesuai sebagai lapisan penyimpan air tanah. Berdasarkan karakteristik lapisan akuifer, diketahui bahwa jenis akuifer pada wilayah penelitian adalah akuifer tertekan dengan lapisan penutup berupa akuiklud/akuitard.
CHARACTERISTIC OF LANDSLIDE IN SEULAWAH ROAD KM 80-81, BASED ON GEOPHYSICAL DATA AND GEOTECHNICAL PARAMETERS Fadhli, Zul; Wirsya, Etian; Marvita, Yurda; Miska, Layna; Syukri, Muhammad; AlFaiz, Khalif
Jurnal Geosaintek Vol. 11 No. 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v11i2.5122

Abstract

This study identifies the sliding plane along the Seulawah Road (km 80-81), Muara Tiga, Pidie Regency, where a massive landslide occurred in 2023. Using the Multichannel Analysis Surface Waves (MASW) method, this research integrates shear wave velocity (Vs) data with N-SPT values and soil-bearing capacity to analyze subsurface characteristics. The study aims to characterize the sliding plane and associated weak zones by combining geophysical and geotechnical approaches. The interpretation reveals the existence of a sliding mass layer consisting of sandy gravel material at a depth of 1-3 meters with a Vs value in the range of 60-150 m/s. Underneath that, the sliding plane is found, which is interpreted as a stiff clay layer with the Vs value in the range of 155-450 m/s at a depth of 6-10 meters. The soil bearing capacity also aligned with these findings with the 20-80 kN/m2 value in the very loose sandy gravel layer. The soil-bearing capacity of the sliding plane, the clay layer, is 250-311 kN/m2. Those findings provide valuable insights into landslide characteristics and highlight the dynamic instability of the sliding plane. Moreover, this study contributes to assessing critical parameters for future reconstruction and road maintenance, offering an essential reference for landslide-prone regions.
Co-Authors Akmal Muhni AlFaiz, Khalif Dharma, Dian Budi Fahril, Muhammad Ari Fajri, Haikal Fajriani Fajriani Khirnica, Khaira M Muslih, Ali Marvita, Yurda Marwan Marwan Miska*, Layna Miska, Layna Muhammad Syukri Putra, Rachmad Almi Raza Karmel, Moehammad Ediyan Sabrian Tri Anda Tarmizi Tarmizi Uswatun Hasanah Wirsya, Etian Zya, Putroe Salsabilla