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All Journal JOURNAL ONLINE OF PHYSICS Jurnal Bio-Geo Material Dan Energi
TANJUNG, MAULINA
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Humanities Electrical & Electronics Engineering Energy Physics

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ANALISIS DATA GAYA BERAT UNTUK IDENTIFIKASI ZONA POTENSI LONGSOR DI GUNUNG KULU, LHOONG, ACEH BESAR Nuriil Tadersi, Risnaliyah; Setia Nugraha, Gartika; Chandra Kirana, Febiyora; Hasbullah, Andrea; Tanjung, Maulina; Wully Agustine, Diah
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 3 (2025): JOP (Journal Online of Physics) Vol 10 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i3.46401

Abstract

Kawasan Gunung Kulu, Lhoong, Aceh Besar, sudah sering terjadi sering terjadi longsor baik itu longsoran tanah maupun jatuhan batu. Penelitian ini bertujuan untuk menganalisis data gaya berat di wilayah Gunung Kulu, Lhoong, Aceh Besar untuk mengidentifikasi sebaran anomali gaya berat yang berkaitan dengan potensi kerentanan longsor. Metode gaya berat digunakan untuk mendeteksi variasi densitas batuan bawah permukaan melalui pengukuran gravitasi observasi (gobs), perhitungan Free Air Anomaly (FAA), Simple Bouguer Anomaly (SBA), Anomali Bouger Lengkap (ABL). Nilai ABL yang diperoleh berkisar antara 71,5 mGal hingga 82 mGal, dengan nilai tinggi terdapat pada bagian barat hingga barat daya wilayah studi yang menunjukkan adanya batuan berdensitas tinggi seperti basalt , sedangkan nilai rendah pada bagian timur menunjukkan adanya zona berdensitas rendah yang berpotensi menjadi jalur longsor. Penelitian ini memiliki keterbatasan pada distribusi titik pengukuran gaya berat di lapangan, di mana terdapat area kosong pada bagian tengah wilayah studi akibat kondisi medan yang sulit diakses dan keterbatasan waktu survei. Hasil penelitian ini memberikan informasi awal kondisi bawah permukaan sebagai upaya mitigasi bencana longsor di wilayah penelitian serta menjadi referensi untuk studi lanjutan di bidang geologi teknik dan geofisika lingkungan.
Geological Structure Analysis of The Grao Sakti Hot Spring Manifestation Using Gravity Derivatives Method: English Amin, Sarwosucitra; Tantri, Tantri; Utama, Hari Wiki; Siregar, Anggi Deliana; Tanjung, Maulina; Parnadi, Wahyudi Widyatmoko
Jurnal Bio-Geo Material Dan Energi Vol. 6 No. 4 (2026): Journal of Bio-Geo Material and Energy (BiGME), August 2026
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/tg3dsy91

Abstract

Hot springs are among the most common geothermal surface manifestations, typically emerging through fractures formed by tectonic processes. The subsurface structures associated with the Grao Sakti hot spring manifestation in Jangkat, Merangin Regency, were identified using GGMplus gravity data by analyzing rock density contrasts through cross-sectional interpretations of the First Horizontal Derivative and Second Vertical Derivative of the gravity anomaly data. The Complete Bouguer Anomaly map reveals several gravity anomalies ranging from 73.8 to 174.6 mGal, which are interpreted as the Masurai, Hulunilu, and Sumbing volcanic complexes, Dikit Fault Segment has promoted the development of a fault-bend basin within the study area and the Barisan Mountain Range. Structural interpretation based on the FHD and SVD maps indicates the gravity derivative results indicate that the Grao Sakti manifestation is associated with a subsurface structure interpreted as a normal fault. This interpretation is consistent with regional geological evidence, and previous studies conducted along the Grao Sakti hot spring profile that normal fault is interpreted to have developed as a consequence of the formation under a transtensional tectonic regime movement of the Dikit Fault Segment, a major segment of the Sumatran Fault System, which trends in a northwest–southeast direction.
Co-Authors Amin, Sarwosucitra Andrea Hasbullah Hari Wiki Utama Kirana, Febiyora Chandra Nuriil Tadersi, Risnaliyah Parnadi, Wahyudi Widyatmoko Setia Nugraha, Gartika Siregar, Anggi Deliana Tantri, Tantri Wully Agustine, Diah