Volcano AM (aeromagnetic) Survey

• Stromboli, Italy
  Aeromagnetic constraints on the subsurface structure of Stromboli Volcano, Aeolian Islands, Italy
  (Okuma, S., C. Stotter, R. Supper, T. Nakatsuka, and R. Furukawa, 2009.11) Tectonophysics, 478, 19-33. DOI: 10.1016/j.tecto.2009.02.035
• Asama
  Detection of aeromagnetic anomaly change associated with volcanic activity: An application of the generalized mis-tie control method  
  (Nakatsuka, T., M. Utsugi, S. Okuma, Y. Tanaka, and T. Hashimoto, 2009.11) Tectonophysics, 478, 3-18. DOI: 10.1016/j.tecto.2009.02.018
• Vulcano-Lipari, Italy
  High-resolution aeromagnetic anomaly map of the Vulcano-Lipari volcanic complex, Aeolian Islands, Italy
  (Okuma, S., T. Nakatsuka, R. Supper, and M. Komazawa, 2006) Bull. Geol. Surv. Japan, 57, 177-190.
• Vulcano-Lipari, Italy
  Shallow subsurface structure of the Vulcano-Lipari volcanic complex, Italy, constrained by helicopter-borne aeromagnetic surveys
  (Okuma, S., T. Nakatsuka, M. Komazawa, M. Sugihara, S. Nakano, R. Furukawa, and R. Supper, 2006) Explor. Geophys., 37, 129-138. Butsuri-Tansa (Geophys. Explor.), 59, 129-138; Mulli-Tamsa (Geophys. Explor.), 9, 129-138. DOI: 10.1071/EG06129
• Unzen, SW Japan
  Aeromagnetic constraints on the subsurface structure of the Unzen Graben, Kyushu, Japan
  (Okubo, A., T. Nakatsuka, Y. Tanaka, T. Kagiyama, and M. Utsugi, 2006) Earth Planet Space, 58, 23-31.
• Usu, NE Japan
  Helicopter-borne EM survey over Usu Volcano, Hokkaido, Japan, with a special reference to the Usu 2000 Eruption (in Japanese)
  (Okuma, S., T. Nakatsuka, S. Takakura, and R. Morijiri, 2002) Bull. Volc. Soc. Japan, 47, 533-546.
• Usu, NE Japan
  Preliminary results of a high-resolution aeromagnetic survey over Usu Volcano, Hokkaido, Japan (in Japanese)
  (Okuma, S., T. Nakatsuka, R. Morijiri, M. Makino, T. Uchida, Y. Ogawa, S. Takakura, and N. Matsushima, 2001) Bull. Geol. Surv. Japan, 52, 149-154.
• Yurihara, NE Japan
  Evaluation of a high-resolution aeromagnetic survey in a volcanic region – The case of Yurihara area, Northeast Japan.
  (Okuma, S., R. Morijiri, M. Makino, and T. Nakatsuka, 1995) Butsuri-Tansa (Geophys. Explor.), 48, 316-332.
• Unzen, SW Japan
  Subsurface structure of Unzen-Fugen and Mayu-yama volcano inferredfrom airborne electromagnetic method and magnetic survey (in Japanese)
  (Mogi, T., Y. Tanaka, T. Morikawa, K. Kusakabe, M. Tanahashi, T. Nakatsuka, K. Tanaka, and H. Utada, 1995) Bull. Volc. Soc. Japan, 40, 263-276.
• Izu-Oshima, Central Japan
  Magnetization intensity mapping in and around Izu-Oshima Volcano, Japan.
  (Okuma, S., M. Makino, and T. Nakatsuka, 1994) J. Geomag. Geoelectr., 46, 541-556.
• Unzen, SW Japan
  Aeromagnetic anomalies over the area of Unzendake Volcano.
  (Nakatsuka, T., 1994) J. Geomag. Geoelectr., 46, 529-540.
• Izu-Oshima, Central Japan
  Aeromagnetic anomalies over the Izu-Oshima volcano (in Japanese)
  (Makino, M., T. Nakatsuka, S. Okuma, and T. Kaneko, 1988) Bull. Volc. Soc. Japan, 2nd Ser., 33, S217-S223.

• Integrated Geophysical Maps of Usu Volcano
  (Okuma, S., M. Makino, and T. Nakatsuka, 2010) Digital Geoscience Map, P-7, Geol. Surv. Japan, AIST. (1 CD-ROM disc)
• High-resolution aeromagnetic anomaly map of Iwate Volcano (1:25,000)
  (Okuma, S., T. Nakatsuka, R. Morijiri, and S. Takakura, 2008) Total Intensity Aeromagnetic Maps, no.44, Geol. Surv. Japan, AIST.
• High-resolution aeromagnetic anomaly map of the Vulcano-Lipari Volcanic Complex, Aeolian Islands, Italy
  (Okuma, S., T. Nakatsuka, R. Supper, and M. Komazawa, 2006) Bull. Geol. Surv. Japan, 57, no.5/6, Appendix map.
• High-resolution aeromagnetic anomaly map of Asama Volcano (1:25,000)
  (Okuma, S., M. Makino, and T. Nakatsuka, 2005) Total Intensity Aeromagnetic Maps, no.43, Geol. Surv. Japan, AIST.
• High-resolution aeromagnetic anomaly map of Usu Volcano (1:25,000)
  (Okuma, S., T. Nakatsuka, R. Morijiri, and M. Makino, 2003) Total Intensity Aeromagnetic Maps, no.41, Geol. Surv. Japan, AIST.
• High-resolution aeromagnetic anomaly map of the Yurihara area (1:50,000)
  (Okuma, S., R. Morijiri, T. Nakatsuka, and M. Makino, 2002) Total Intensity Aeromagnetic Maps, no.40, Geol. Surv. Japan, AIST.
• Total intensity aeromagnetic map of Unzen area (1:50,000)
  (Nakatsuka, T., R. Morijiri, and M. Makino, 1994) Total Intensity Aeromagnetic Maps, no.38, Geol. Surv. Japan.
• Total intensity aeromagnetic map of Ito City and adjacent areas (1:25,000)
  (Nakatsuka, T., S. Okuma, and R. Morijiri, 1994) Total Intensity Aeromagnetic Maps, no.37, Geol. Surv. Japan.
• Total intensity aeromagnetic map of Izu-Oshima area (1:50,000)
  (Nakatsuka, T., M. Makino, and S. Okuma, 1994) Total Intensity Aeromagnetic Maps, no.36, Geol. Surv. Japan.

• Temporal magnetic changes possibly due to cooling magmas as revealed by repeat helicopter-borne surveys over an active volcano
  (Hashimoto, T., M. Utsugi, T. Nakatsuka, S. Okuma, T. Koyama, and W. Kanda, 2011.11) Proc. 10th SEGJ Intl. Symp., 276-279.
• Aeromagnetic 3D subsurface imaging in the Otoge Cauldron, Shitara area, Central Japan
  (Nakatsuka, T. and S. Okuma, 2011.11) Proc. 10th SEGJ Intl. Symp., 285-289.
• Integrated geophysical constraints on the subsurface structure of Usu Volcano, Hokkaido Japan
  (Okuma, S., T. Nakatsuka, M. Komazawa, N. Matsushima, H. Satoh, S. Takakura, Y. Ishizuka, S. Onizawa, Y. Ogawa, and T. Mogi, 2009.10) Extended Abstracts, 9th SEGJ Intl. Symp., 11 (4p.).
• Aeromagnetic 3D subsurface imaging with source volume minimization
  (Nakatsuka, T. and S. Okuma, 2009.10) Extended Abstracts, 9th SEGJ Intl. Symp., 6 (4p.).
• Aeromagnetic study of Unzen Volcano, Kyushu, Japan (3)
  (Okubo, A., T. Nakatsuka, Y. Tanaka, M. Utsugi, N. Kitada, H. Shimizu, and T. Matsushima, 2005.05) Proc. 11th IAGA Workshop on Magnetic Obs., 241-251.
• Magnetization structure of Unzen graben determined from aeromagnetic data
  (Okubo, A., T. Nakatsuka, Y. Tanaka, T. Kagiyama, and M. Utsugi, 2005.04) Annuals of Disas. Prev. Inst., Kyoto Univ., no.48B, 353-361.
• Subsurface structure of the Unzen graben based on aeromagnetic and volcanological data
  (Okubo, A., T. Nakatsuka, Y. Tanaka, T. Kagiyama, and M. Utsugi, 2005.03) 2005 Proc. Conductivity Anomaly Research, 40-47.