Buwonokeling, Wahyu Nurdiansyah (2024) Integrasi Metode Geomagnetik Udara dan Darat untuk Mengidentifikasi Kondisi Bawah Permukaan di Kaldera Lautan Pasir Komplek Gunung Bromo-Tengger. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Komplek Bromo-Tengger merupakan pegunungan muda dengan sejarah dan stratigrafi kompleks hingga menghasilkan litologi beragam. Terbentuknya merupkan hasil aktivitas vulkanik yang terjadi dalam kurun waktu lama serta melalui proses yang kompleks. Mayoritas penelitian terdahulu belum dapat menjelaskan kondisi bawah permukaan menggunakan metode geomagnetik sebagai metode geofisika. Metode geomgantik merupakan metode yang dapat digunakan untuk mengetahui anomali magnetik pada daerah vulkanik dan pegunungan dikarenakan batuan beku hasil produk vulkanik erat kaitannya dengan kandungan mineral magnetit, sehingga dengan penelitian lanjutan menggunakan metode geomganetik dapat digunakan untuk mengetahui kondisi bawah permukaan Komplek Bromo-Tengger. Penelitian ini bertujuan mengintegrasikan metode geomagnetik udara dan darat untuk mengidentifikasi sebaran anomali magnetik serta kondisi bawah permukaan Kompleks Gunung Api Bromo Tengger. Pengukuran geomagnetik udara dilakukan menggunakan Geotron Proton Precision Magnetometer G5 sebagai base dan Sensys Magdrone R3 berpesawat drone DJI M600 sebagai rover dengan interval 5 ms. Pengukuran geomagnetik darat menggunakan Geotron Proton Precision Magnetometer G5 untuk base dan rover dengan jarak 200 meter. Menggabungkan kedua pengukuran geomagnetik memberikan pemahaman komprehensif tentang kondisi area yang disurvei. Pengukuran metode geomagnetik udara menghasilkan 2.097.134 data, sedangkan geomagnetik darat menghasilkan 174 data. Hasil penelitian menunjukkan sebaran anomali tinggi dikorelasikan dengan keberadaan batuan beku dari area penelitian yang mayoritas memiliki sifat basaltik sehingga memiliki kandungan besi yang tinggi, anomali sedang berkorelasi dengan persebaran pasir hasil endapan kerucut muda, dan anomali rendah berkorelasi dengan penebalan endapan sedimen piroklastik dan aktivitas vulkanik dari Gunung Bromo.
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The Bromo-Tengger Complex is a young mountain range with a complex history and stratigraphy, resulting in diverse lithology. The formation of the sand caldera is the result of volcanic activity occurring over a long period and through complex processes. Most previous studies have not been able to explain subsurface conditions using geomagnetic methods as a geophysical method, necessitating further research to understand the subsurface conditions of the sand sea caldera. The geomagnetic method is a method that can be used to determine magnetic anomalies in volcanic and mountainous areas because igneous rocks resulting from volcanic products are closely related to the magnetite mineral content, so that further research using the geomagnetic method can be used to determine the subsurface conditions of the Bromo-Tengger Complex. This research aims to integrate airborne and ground geomagnetic methods to identify the distribution of magnetic anomalies and the subsurface conditions of the Bromo-Tengger Volcano Complex. Airborne geomagnetic measurements were carried out using a Geotron Proton Precision Magnetometer G5 as a base and a Sensys Magdrone R3 with a DJI M600 drone as a rover at 5 ms intervals. Ground geomagnetic measurements used the Geotron Proton Precision Magnetometer G5 for the base and rover at a distance of 200 meters. Combining both geomagnetic measurements provides a comprehensive understanding of the surveyed area's conditions. The airborne geomagnetic method produced 2,097,134 data points, while the ground geomagnetic method produced 174 data points. The results of the study showed that the distribution of high anomalies was correlated with the presence of igneous rocks from the study area, most of which have basaltic properties so that they have high iron content, medium anomalies were hidden with the distribution of sand from young cone deposits, and low anomalies were asleep with thickening of pyroclastic sediment deposits and volcanic activity from Mount Bromo.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Bawah Permukaan, Geomagnet Darat, Geomagnet udara, Integrasi, Kaldera Lautan Pasir Komplek Gunung Bromo-Tengger,Mount Bromo-Tengger complex sea sand caldera, Aeromagnetic, Groundmagnetic, Integration, Subsurface |
| Subjects: | Q Science > QE Geology > QE1.F557 Magnetic anomalies--Measurement. Q Science > QE Geology > QE601 Geology, Structural |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Wahyu Nurdiansyah Buwonokeling |
| Date Deposited: | 15 Aug 2024 06:24 |
| Last Modified: | 15 Aug 2024 06:24 |
| URI: | http://repository.its.ac.id/id/eprint/113214 |
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