48 24 3 23 REPORT OF HYDROGRAPHIC AND OCEANOGRAPHIC RESEARCHES No.48 March, 2012 List of volcanoes and their activities records in the adjacent seas of Japan th edition Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Abstract The Hydrographic and Oceanographic Department of Japan Coast Guard actively has participated in The Volcanic Eruption Prediction Plan since the Plan started in. Observation of volcanic activities in the adjacent seas of Japan is very important, not only to protect safety navigation, fishery, and the other activities in the sea area against a disaster, but also to manage the sea area itself effectively. This list is a th edition of List of volcanoes and their activities records in the adjacent seas of Japan. During the past seven years, small volcanic activities occurred at Satsuma-Iojima Volcano in, Kuchinoerabujima Volcano in, Nakanoshima Volcano in, Suwanosejima Volcano in, Sakurajima Volcano in, Fukutoku Okanoba Volcano inand some fundamental data on geology and geophysics were newly collected from the surveys on Wakamiko Caldera, Kikai Caldera, Kaikata Volcano, Nakanoshima Volcano, and Fukutoku Okanoba Volcano. Received JanuaryAccepted February Ocean Research Laboratory Continental Shelf Surveys Office Technology Planning and International Affairs Division Hydrographic Surveys Division Geodesy and Geophysics Office 41
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Fig Fig Distribution of volcanoes in the Nansei Shoto Ryukyu Arc. Numbers in the figure refer to each number of volcano listed in this article. 42
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Fig Distribution of volcanoes in the Nanpo Shoto Izu Bonin Arc. Numbers in the figure refer to each number of volcano listed in this article. 43
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA FigTokyo Datum ETOPOAmante and Eakins, Fig Topography of Aira Caldera including Wakamiko Caldera and Sakurajima Volcano. Contour interval on land and in water is m andm, respectively. m GMT Wessel and Smith, NE S kmkm m m Fig Geomagnetic total intensity anomaly chart of Wakamiko Caldera surveyed in. Contour interval isnt. Fig Free sir gravity anomaly chart of Wakamiko Caldera surveyed in. Contour interval is mgal. 44
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition NEm SiO Fig Topography of Kikai Caldera, Satsuma Iojima Volcano, and Takeshima Island surveyed from to. Contour interval on land and in water is m andm, respectively. 45
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Geomagnetic total intensity anomaly chart surveyed fromto. Contour interval is nt. Fig Free air gravity anomaly chart surveyed from to. Contour interval is mgal. NE NE s km km km km km m mm m km m m SiO m msio km m 46
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition NE S km NE mm SiO Fig Topography of Kuchinoerabujima Volcano. Contour interval is m. NE km kmkm m m m m Fig Aeromagnetic total intensity anomaly chart in and around Kuchinoerabujima Volcano at height of ft, surveyed in. Contour interval isnt. Fig Topography of Kuchinoshima Volcano. Contour interval is m. 47
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Aeromagnetic total intensity anomaly chart of Kuchinoshima Volcano at height of ft, surveyed in. Contour interval isnt. Fig Aeromagnetic total intensity anomaly chart of Nakanoshima Volcano at height of ft, surveyed in. Contour interval isnt. NE km kmkm m m m km Fig Topography of Nakanoshima Volcano surveyed inand. Contour interval is m. NE km kmkm SiO m m m 48
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition m m Fig Topography from Nakanoshima Volcano to Kappa Sone surveyed inand. Contour interval is m. [Tokyo Datum] NE s km km mm N Em Fig Aeromagnetic total intensity anomaly chart of Suwanosejima Volcano at height of ft, surveyed in. Contour interval isnt. Fig Topography of Io Torishima Volcano. Contour interval is m. 49
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Aeromagnetic total intensity anomaly chart of Io Torishima Volcano at height of, ft, surveyed in. Contour interval isnt. Fig Topography off north northeast of Iriomotejima Island surveyed in. Contour interval is m. N E s NE NEm NE mne m NE 50
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Fig Topography of sea area of the Izu Tobu Volcano Group. Contour interval is m. m mm mm m Fig Detailed topography of Teishi Knoll surveyed by Hydrochart multibeam sounding system in October. Contour interval is m. NE m kmkm 51
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA km m m m m m m m B nt m B m C km B C Fig Topography of Izu Oshima Volcano. Contour interval is m. 52
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Fig Aeromagnetic total intensity anomaly chart of Izu Oshima Volcano at height of ft, surveyed in. Contour interval is nt. NE km km NEm km km mnt Fig Topography of Niijima Volcano surveyed by multibeam sounding system in. Contour interval is m. Fig Aeromagnetic total intensity anomaly chart over Niijima Volcano. Contour interval isnt. 53
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA NE km km km SiO km km m m Fig Topography of Kozushima Volcano surveyed by multibeam sounding system. Contour interval is m. Fig Geomagnetic total intensity anomaly chart of Kozushima Volcano surveyed in. Contour interval isnt. NE s km km SiO m m m nt ntkm km 54
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition m m m m Fig Topography of Miyakejima Volcano surveyed in. Contour interval is m. Fig Aeromagnetic total intensity anomaly chart of Miyakejima Volcano at height of ft surveyed in. Contour interval isnt. NE s km NEm m kmkm m SiO m km nt km 55
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA s km NEm km Fig Topography of Hachijojima Volcanic Group surveyed in. Contour interval is m. Fig Geomagnetic total intensity anomaly chart of Hachijojima Volcanic Group surveyed in and. Contour interval isnt. SiO SiO m NE Fig Topography of Aogashima Volcano surveyed in. Contour interval is m. 56
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Fig Aeromagnetic total intensity anomaly chart over Aogashima Volcano at height of ft. Contour interval is nt. NE s km kmkm m m SiO m SiO m m m m mm m m m 57
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Topography of Myojin Volcano surveyed in. Contour interval is m. Fig Geomagnetic total intensity anomaly chart in the vicinity of Myojin Volcano surveyed in and. Contour interval isnt. NE s km m NE km m km mm km m km kmkm 58
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition m SiO Na O K O m m Fig Topography around Sumisujima Island surveyed in. Contour interval is m. Fig Geomagnetic total intensity anomaly chart around Sumisujima Island surveyed in. Contour interval is nt. NE s km km SiO m km m km m km mgal km m 59
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Topography around Izu Torishima Volcano surveyed in. Contour interval is m. Fig Geomagnetic total intensity anomaly chart around Izu Torishima Volcano surveyed in. Contour interval is nt. m NE s km mm NE m SiO km m m SiO Na O K O mkm m km m m m m mm m m m m. 60
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Fig Topography of Nishinoshima Volcano surveyed inand. Contour interval is m. Fig Geomagnetic total intensity anomaly chart of Nishinoshima Volcano surveyed in and. Contour interval isnt. NE km m m m m mmm km kmm m 61
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Fig Topography of Kaikata Volcano surveyed in. Contour interval is m. Fig Geomagnetic total intensity anomaly chart around Kaikata Volacno in. Contour interval isnt. Fig Free air gravity anomaly chart around Kaikata Volcano surveyed in. Contour interval is mgal. NE km km m m 62
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Fig Topography of part of Kaitoku Volcano Higashi Kaitokuba surveyed in. Contour interval is m. m NE m SiO m m m SiO Na O K O phfe mg /l. NE s km m Fig Topography around Kita Ioto Volcano surveyed in. Contour interval is m. m km m NE s km SiO m km km NE mm 63
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA m m m m km NE m km NEm m m Fig Topography of Ioto Volcano surveyed in. Contour interval is m. Fig Aeromagnetic total intensity anomaly chart around Ioto Volcano at height of ft surveyed in. Contour interval is nt. Fig Topography of Kaisei Nishinoba Volcano surveyed in. Contour interval ism. NE 64
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition NE km km km m km km m SiO Fig Topography of Kita Fukutoku Volcano surveyed inand. Contour interval is m. 65
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA km km mm m km m m kmha m m m km ha m m m m SiO Na O K O m m Fig Geomagnetic total intensity anomaly chart in the vicinity of Kita Fukutoku Volcano surveyed in and. Contour interval is nt. Fig Topography of the top of Fukutoku Okanoba Volcano surveyed in. Vertical and horizontal ratio is. 66
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition mm m NE km km m Fig Topography of Minamihiyoshi Volcano and Nakahiyoshi Volcano surveyed in. Contour interval is m. 67
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA m A/m m m Fig Geomagnetic total intensity anomaly chart of Minamihiyoshi Volcano and Nakahiyoshi Volcano surveyed in. Contour interval is nt. m. S S Amante, C. and B. W. Eakins, ETOPO Arc Minute Global Relief Model : Procedures, Data Sources and Analysis, NOAA Technical Memorandum NESDIS NGDC, pp. Natl. Geophys. Data Cent., Boulder, Colo. pp. Aramaki, S., Formation of the Aira Caldera, southern Kyushu, years ago, J. Geophys. Res., 89, B10,. 68
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Honza, E., T, Ishihara, and E. Inoue eds., Geological investigation of the Ogasawara Bonin and northern Mariana Arcs April August GH, and Cruise. Cruise Report, Geolo.Surv. pp., Tsukuba. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. pp. Kano, K., T. Yamamoto, and K. Ono, 69
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA Subaqueous eruption and emplacement of the Shinjima Pumice, Shinjima Moeshima Island, Kagoshima Bay, SW Japan, J. Volcanol. Geotherm. Res., 71, GPS pp. http : / / www. seisvol. kishou. go. jp / tokyo / STOCK/ kaisetsu/ CCPVE/ shiryo/ 122/ 122_ no 06 2.pdf. m III. Kumagai, H., K. Miyakawa, H. Negishi, H. Inoue, K. Obara, and D. Suetsugu Magmatic dike resonances inferred from very long period seismic signals, Science, 299,. pp. pp.. pp pp 70
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition Oshima, S., M. Tsuchide, S. Kato, S. Okubo, K. Watanabe, K. Kudo, and J. Ossaka, Birth of a Submarine Volcano Teisi Knoll. J. Phys. Earth, 39,. pp. / pp. 71
Koji ITO, Daishi HORIUCHI, Atsushi SHIBATA, Akira SUZUKI, and Kaoru KOYAMA II pp. S S Blue Earth 09 B SS 72
List of volcanoes and their activities records in the adjacent seas of Japan 4 th edition JAMSTEC Wessel, P. and W. H. F. Smith, Free software helps map and display data, EOS Trans. AGU,,. 73