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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
第75号 >
無人ヘリコプターを利用した樽前山の空中磁気測量
| Title: | 無人ヘリコプターを利用した樽前山の空中磁気測量 |
| Other Titles: | Aeromagnetic survey using an unmanned autonomous helicopter over Tarumae Volcano |
| Authors: | 橋本, 武志1 Browse this author | | 小山, 崇夫2 Browse this author | | 金子, 隆之3 Browse this author | | 大湊, 隆雄4 Browse this author | | 吉本, 充宏5 Browse this author | | 鈴木, 英一6 Browse this author | | 柳澤, 孝寿7 Browse this author |
| Authors(alt): | Hashimoto, Takeshi1 | | Koyama, Takao2 | | Kaneko, Takayuki3 | | Oominato, Takao4 | | Yoshimoto, Mitsuhiro5 | | Suzuki, Eiichi6 | | Yanagisawa, Takatoshi7 |
| Issue Date: | 19-Mar-2012 |
| Publisher: | 北海道大学大学院理学研究院自然史科学部門（地球物理学） |
| Journal Title: | 北海道大学地球物理学研究報告 |
| Journal Title(alt): | Geophysical bulletin of Hokkaido University |
| Volume: | 75 |
| Start Page: | 145 |
| End Page: | 159 |
| Abstract: | The first low-altitude airborne magnetic survey was performed over the summit area of Tarumae Volcano, southwestern Hokkaido, Japan. An unmanned autonomous helicopter was used as the platform for the magnetic survey. Obtained total field anomaly is inverted into a matrix of magnetized prisms, each of which has a uniform magnetization parallel to the present geomagnetic field. Magnetization in the summit atrio ranges from 3 to 8 A/m with an average of 5.3 A/m. The summit lava dome and its vicinity show relatively high magnetization, while the eastern to southwestern part of the atrio is less magnetized. Such variability may be attributed to the difference in magnetization between blocky lava and pyroclastic deposits, as well as to chemical demagnetization due to persistent fumarolic activity at several vents. From the viewpoint of an aeromagnetic survey, high positioning repeatability is one of the most advantageous features of such an unmanned autonomous helicopter. Optimized operation of the system would enable us to detect temporal changes associated with volcanic activity in the future. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/49078 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第75号
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