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Aeromagnetic survey using an unmanned autonomous helicopter over Tarumae Volcano, northern Japan

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Title: Aeromagnetic survey using an unmanned autonomous helicopter over Tarumae Volcano, northern Japan
Authors: Hashimoto, Takeshi Browse this author →KAKEN DB
Koyama, Takao Browse this author
Kaneko, Takayuki Browse this author
Ohminato, Takao Browse this author
Yanagisawa, Takatoshi Browse this author
Yoshimoto, Mitsuhiro Browse this author
Suzuki, Eiichi Browse this author
Keywords: aeromagnetic survey
Tarumae Volcano
unmanned autonomous helicopter
Issue Date: Mar-2014
Publisher: CSIRO Publishing
Journal Title: Exploration Geophysics
Volume: 45
Issue: 1
Start Page: 37
End Page: 42
Publisher DOI: 10.1071/EG12087
Abstract: Unmanned aerial vehicles (UAVs) have recently received attention in various research fields for their ability to perform measurements, surveillance, and operations in hazardous areas. Our application is volcano surveillance, in which we used an unmanned autonomous helicopter to conduct a dense low-altitude aeromagnetic survey over Tarumae Volcano, northern Japan. In autonomous flight, we demonstrated positioning control with an accuracy of similar to 10 m, which would be difficult for an ordinary crewed vehicle. In contrast to ground-based magnetic measurement, which is highly susceptible to local anomalies, the field gradient in the air with a terrain clearance of 100 to 300 m was fairly small at 1 nT/m. This result suggests that detection of temporal changes of an order of 10 nT may be feasible through a direct comparison of magnetic data between separate surveys by means of such a system, rather than that obtained by upward continuation to a common reduction surface. We assessed the temporal magnetic changes in the air, assuming the same remagnetising source within the volcano that was recently determined through ground surveys. We conclude that these expected temporal changes would reach a detection level in several years through a future survey in the air with the same autonomous vehicle.
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 橋本 武志

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