Recent Surveys of Volcanic Islands and Submarine Volcanoes

* Volcanic activity of Nishinoshima Nishinoshima ( Recent Surveys 5 Mar. 2016 ) <-- New !! Recent Surveys 5 Mar. 2016 Data of archive ( Jan. - Dec. 2015 ) Data of archive ( Jan. - Dec. 2014 ) Data of archive ( Jun. - Dec. 2013 ) Latest Figure of topography change ( 17 Nov. 2015 ) * Acousitc Features of Submarine Volcanoes Kita-Hiyoshi Seamount ( 2002 May. ) Index Map and Contour Map (jpeg:346840 bytes) Three dimensional view (jpeg:331400 bytes) Sidescan image (right) and three dimensional view (left)(jpeg:296771 byte) Minami-Hiyoshi Seamount ( 2001 Oct.-Nov. ) Contour Map (jpeg:79123 bytes) Three dimensional view (gif:172356 bytes) Sidescan image (right) and three dimensional view (left)(jpeg:116600 byte) Miyakejima ( 2000 June.-Oct. ) Contour Map (jpeg:92459 bytes) Three dimensional view (gif:133309 bytes) Sidescan image (bottom) and three dimensional view (top)(jpeg:82199 byte) Fukutoku-Okanoba ( 1999 June.-July. ) Contour Map (jpeg:92459 bytes) 1991 Takuyo SeaBeam survey (top) and 1999 Shoyo SeaBeam2112 & MAMBOII survey (bottom) (jpeg:86093 bytes) Three dimensional view (gif:102894 bytes) Sidescan image (bottom) and three dimensional view (top)(jpeg:83727 bytes) Myojin-Sho ( 1998 Sep. ) Contour Map (jpeg:60478 bytes) Comparison between 1989&1993 survey (including MAMBO data : top) and 1998 Shoyo SeaBeam2112 & MAMBOII survey (bottom) (jpeg:67272 bytes) Three dimensional view of the Myojin Sho (gif:112794 bytes) Sidescan image (bottom) and three dimensional view (top)(jpeg:109698 bytes) * Seismic Features of Submarine Volcanoes Myojin Sho ( 1998 Sep. ) Hypocenter distribution Sep.2-19, 1998. (jpeg:60478 bytes)

Seafloor topography around the Izu-Ogasawara (Bonin) island arc system * * Click on image to view at full size.