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Grounded electrical-source airborne transient electromagnetic (GREATEM) survey of Mount Bandai, north-eastern Japan  

Mogi, Toru (Institute of Seismology and Volcanology, Hokkaido University)
Kusunoki, Ken'ichirou (Civil Engineering Research Laboratory, Central Research Institute of Electrical Power Industry)
Kaieda, Hideshi (Civil Engineering Research Laboratory, Central Research Institute of Electrical Power Industry)
Ito, Hisatoshi (Civil Engineering Research Laboratory, Central Research Institute of Electrical Power Industry)
Jomori, Akira (NeoScience Co.)
Jomori, Nobuhide (NeoScience Co.)
Yuuki, Youichi (Geotechnical Center, Oyo Co.)
Publication Information
Geophysics and Geophysical Exploration / v.12, no.1, 2009 , pp. 1-7 More about this Journal
Abstract
Airborne electromagnetics (AEM) is a useful tool for investigating volcanic structures because it can survey large and inaccessible areas. Disadvantages include lower accuracy and limited depth of investigation. The Grounded Electrical Source Airborne Transient Electromagnetic(GREATEM)survey system was developed to increase the depth of investigation possible using AEM. The method was tested in a survey at Mount Bandai in north-eastern Japan. Mount Bandai is an andesitic stratovolcano that rises 1819m above sea level. An eruption in July 1888 left a hoof-shaped collapsed wall in its northern crater and avalanche debris at its base. Previous surveys of Mount Bandai allow for comparisons of data on its structure and collapse mechanism as obtained by GREATEM and other geophysical methods. The results show resistive structures in recent volcanic cones and conductive structures in the collapsed-crater area. Conductive areas around the collapsed wall correspond to an alteration zone resulting from hydrothermal activity, supporting the contention that a major cause of the collapse associated with the 1888 eruption was hydrothermal alteration that structurally weakened the interior of the volcanic edifice.
Keywords
airborne electromagnetics; collapsed wall; disaster mitigation; subsurface volcanic structure;
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  • Reference
1 Goldstein, M. A., and Strangway, D. W., 1975, Audio-frequencymagnetotellurics with grounded electric dipole source: Geophysics, 40,669–683. doi: 10.1190/1.1440558   DOI   ScienceOn
2 H\ddot{o}rdt, A., and M\ddot{u}ller, M., 2000, Understanding LOTEM data from mountainous terrain: Geophysics, 65, 1113–1123. doi: 10.1190/1.1444804   DOI   ScienceOn
3 Ito, H., Kaieda, H., Kususnoki, K., Mogi, T., Tanaka, Y., Fujimitsu, Y., and Yuuki, Y., 2007, Development of an integrated airborne geophysical survey system using helicopter – Improvement of airborne survey methods of electromagnetic, magnetic, gamma-ray spectrometry and infrared image: Research Report of Central Research Institute of Electrical Power Industry, N06011, 21. [in Japanese with English abstract]
4 NRIESDP (National Research Institute of Earth Science and Disaster Prevention), Ed., 1995, Bandai Volcano – Recent Progress on Hazard Prevention, pp. 241. (in Japanese)
5 Sasaki, Y., and Nakazato, H., 2003, Topographic effects in frequency-domainhelicopter-borne electromagnetics: Exploration Geophysics, 34, 24–28. doi: 10.1071/EG03024   DOI   ScienceOn
6 Smith, R. S., Annan, A. P., and McGowan, P. D., 2001,A comparison of datafrom airborne, semi-airborne and ground electromagnetic systems: Geophysics, 66, 1379–1385. doi: 10.1190/1.1487084   DOI   ScienceOn
7 Tanaka, K., Mimura, K., Endo, H., and Inokuchi, T., 1995, Slip Surface and Boring of Catastrophic Rockslide Avalanche at Mount Bandai in 1888, National Research Institute of Earth Science and Disaster Prevention Ed., Bandai Volcano – Recent Progress on Hazard Prevention, pp. 69–78. (in Japanese)
8 Tokyo Geographical Society, Ed., 1988, Bandai-san – Centenary of the 1888eruption of Bandai-san –, Journal of Geography, 97, 243–407. (in Japanese)   DOI
9 Elliott, P., 1998, The principles and practice of FLAIRTEM: Explorat Geophysics, 29, 58–60. doi: 10.1071/EG998058   DOI   ScienceOn
10 Strack, K.-M., 1992, Exploration with Deep Transient Electromagnetics, Elsevier, pp. 373
11 Takeuchi, M., Nakazato, H., Mori, M., Fujisaki, O., Kim, H. J., Furuya, T., Ogura, C., and Okuyama, T., 1995, Dipole–Dipole Electrical Resistivity Survey in Bandai Volcano, National Research Institute of Earth Science and Disaster Prevention, Ed., Bandai Volcano – Recent Progress on Hazard Prevention, pp. 21–30. (in Japanese)
12 Mohri, K., Uchiyama, T., Shen, L. P., Cai, C. M., Panina, L. V., Honkura, Y.,and Yamamoto, M., 2002, Amorphous wire and CMOS IC-based sensitive micromagnetic sensors utilizing magnetoimpedance (MI) and stress-impedance (SI) effects: IEEE Transactions on Magnetics, 38, 3063–3068. doi: 10.1109/TMAG.2002.802438   DOI   ScienceOn
13 Tanahashi, M., Morikawa, T., Kusakabe, K., Yoshikawa, H., Tanaka, K., Inokuchi, T., and Takeuchi, M., 1995, Airborne Electromagnetic Investigation in the Bandai Volcano Area – The Relation Between the 1888 Debris Avalanche and Low Resistivity Zone –, National Research Institute of Earth Science and Disaster Prevention, Ed., Bandai Volcano – Recent Progress on Hazard Prevention, pp. 1–9. (in Japanese)
14 Mitsuhata, Y., Uchida, T., and Amano, H., 2002, 2.5-D inversion of frequency-domain electromagnetic data generated by a grounded-wire source: Geophysics, 67, 1753–1768. doi: 10.1190/1.1527076   DOI   ScienceOn
15 Yamamoto, T., Nakamura, Y., and Glicken, H., 1999, Pyroclastic density current from the 1888 phreatic eruption of Bandai volcano, NE Japan: Journal of Volcanology and Geothermal Research, 90, 191–207. doi: 10.1016/S0377-0273(99)00025-6   DOI   ScienceOn
16 Mogi, T., Tanaka, Y., Kusunoki, K., Morikawa, T., and Jomori, A., 1998, Development of grounded electrical source airborne transient EM (GREATEM): Exploration Geophysics, 29, 61–64. doi: 10.1071/EG998061   DOI   ScienceOn
17 Yamawaki, T., Tanaka, S., Ueki, S., Hamaguchi, H., and Nakamichi, H., et al.2004, Three-dimensional P-wave velocity structure of Bandai volcano innortheastern Japan inferred from active seismic survey: Journal of Volcanology and Geothermal Research, 138, 267–282. doi: 10.1016/j.jvolgeores.2004.07.010   DOI   ScienceOn
18 Fraser, D. C., 1978, Resistivity mapping with an airborne multi-coil electromagnetic system: Geophysics, 43, 144–172. doi: 10.1190/ 1.1440817   DOI   ScienceOn
19 Geographical Survey Institute, 1993, 1 : 15000 Geomorphological map of Bandai Volcano, the 1888 eruption and debris avalanche
20 Nishimura, T., Ueki, S., Yamawaki, T., Tanaka, S., Hashino, H., Sato, M., Nakamichi, H., and Hamaguchi, H., 2003, Broadband seismic signals associated with the 2000 volcanic unrest of Mount Bandai, northeasternJapan: Journal of Volcanology and Geothermal Research, 119, 51–59. doi: 10.1016/S0377-0273(02)00305-0   DOI   ScienceOn
21 Shimozuru, D., 1988, Brief Outline of Bandaisan, In Tokyo Geographical Society, Ed., Bandai-san – Centenary of the 1888 eruption of Bandaisan –, Journal of Geography, 97, 243–255. (in Japanese with English figure captions)   DOI
22 Inoue, J., Kawakmi, N., Takasugi, S., Tanaka, K., and Takeuchi, M., 1995,Resistivity Structure beneath the Bandai Volcano by the MagnetotelluricSoundings, National Research Institute of Earth Science and DisasterPrevention, Ed., Bandai Volcano – Recent Progresson Hazard Prevention,pp. 31–41. (in Japanese)