Tailored Drone-Magnetometer Design for Geothermal Exploration

Wahyudi, Muhammad Iqbal and Taufiq
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Wahyudi: Department of Physics, Faculty of Mathematics and Natural Sciences, Gadjah Mada University
Muhammad Iqbal: Department of Physics, Faculty of Mathematics and Natural Sciences, Gadjah Mada University
Taufiq: Specialist II Upstream Research Technology Development I, Technology Innovation PT. Pertamina (Persero)

International Journal of Research and Innovation in Applied Science, 2024, vol. 9, issue 11, 644-649

Abstract: Geothermal fields, often nestled in mountainous regions with challenging topography and dense vegetation, can be difficult to access for direct ground measurements. To overcome these obstacles, the magnetic method offers a viable geophysical approach for geothermal exploration. Leveraging advanced technology, Unmanned Aerial Vehicles (UAVs) equipped with magnetometers can provide faster than land magnetometer, more accurate with high sensor accuracy, and efficient magnetic mapping use flight control tracking, making them an invaluable tool for achieving operational targets. This article presents the design of a drone magnetometer using a custom-built UAV for magnetic mapping in geothermal fields. This method validated by acquisition in the same place and time with land magnetometer, have a same pattern anomaly. The UAV is specifically designed with a large payload capacity (6-8 kg) and extended flight duration (>60 minutes). It is equipped with a 3-Axis Fluxgate Magnetometer FGM3D/100 from Sensys, which has a measurement range of ±100 µT. The designed system was validated using a PPM scalar magnetometer from GEOTRON, with highly satisfactory results, suggesting it is well-suited for practical geomagnetic mapping in geothermal fields.

Date: 2024
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