140-【技術報告】泉.indd

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1 技術報告 REPORT OF HYDROGRAPHIC AND OCEANOGRAPHIC RESEARCHES No.52 March, 2015 m DEM D 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150 m grid DEM Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA, Yukari KIDO, Hideaki GOTO, Mitsuhisa WATANABE, Yasuhiro SUZUKI, and Takashi NAKATA Abstract We have made detailed anaglyph images of the Izu Ogasawara Trench and its vicinity based on m DEM Digital Elevation Model processed from the original data obtained by Japan Coast Guard and JAMSTEC, in order to provide more detailed D submarine images for a more precise interpretation of tectonic landforms than previous studies. We give examples of images of the plate boundary around Mogi Seamount, extensive submarine eruption around Sumisu Caldera, normal faulting around Shichiyo Volcano Chain, volcanic domes between Sofugan Tectonic Line and Sofu Trough, central part of the Ogasawara Ridge and normal faulting around the Ogasawara Plateau. 1 はじめに, m Received September, ; Accepted November, Hydrographic and Oceanographic Department, th R.C.G.Hqs. Ocean Research Laboratory, Technology Planning and International Affairs Division Continental Shelf Surveys Office, Hydrographic Surveys Division Japan Agency for Marine Earth Science and Technology Hiroshima University Toyo University Nagoya University Professor Emeritus of Hiroshima University

2 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM JAMSTEC JODC J BIRD m J EGG m NOAA ETOPO DEM 2 海上保安庁海洋情報部の調査概要 XBT Expendable Bathythermograph XCTD Expendable Conductivity Temperature Depth profiler D 3 JAMSTEC の調査概要 JAMSTEC JAMSTEC dataportal/viewer.htm JAMSTEC DARWIN go.jp/darwin/j JAMSTEC SeaBeam SeaBeam /Classic SeaBeam SeaBat Fig. Table DARWIN XBT XCTD

3 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al. C Fig. Track chart of JAMSTEC vessels around the Izu Ogasawara region. Ship s track lines of five research vessels are distinguished by different colors; R/Vs Natsushima Orange, Kaiyo Yellow, Yokosuka Green, Mirai Blue and Kairei Red. White triangle with C indicates Charley naval exercise region. DARWIN:Data Research System for Whole Cruise Information in JAMSTEC retouched. JAMSTEC JAMSTEC C DARWIN JAMSTEC godac.jamstec.go.jp/darwin/j JAMSTEC, m Fig. 4 地形地質に関する既往研究

4 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM Table Numbers of JAMSTEC research cruises that cover the area of Izu Ogasawara region. JAMSTEC Okamura et. al, m 5 アナグリフ画像による海底地形の観察 Fig. Fig. m Fig., m

5 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al. Fig. Anaglyph image of the Izu Ogasawara Trench and its surrounding area. Square shows location of Figs.. Fig. Fig.

6 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM Fig. Bathymetry of the Izu Ogasawara Trench and its surrounding area. Contour interval is m and thick contour is drawn every m. m m

7 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al. km Fig. Anaglyph image of Mogi Seamount and its vicinity. Bathymetry is also shown contour interval is m and thick contour is drawn every m. Interpretation of the active faults is also shown on the bathymetry blue line: normal active fault, red line: reverse active fault, dashed line: presumed active fault. m m

8 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM km, m, m, m, m, m km, m 5.1 茂木海山周辺のプレート境界の地形 Fig., m m, m, m, m, m 5.2 須美寿 ( すみす ) カルデラと大規模噴出物 km m Fig. m m km 5.3 七曜海山列を切る正断層 Fig. km

9 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al. Fig. Anaglyph image of Myojin-sho Volcano and its vicinity. Bathymetry is also shown contour interval is m and thick contour is drawn every m. Interpretation of the active faults and flexure structures is also shown on the bathymetry red line: reverse active fault, arrow: flexure structure. m m

10 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM Fig. Anaglyph image of Sofugan Volcano and its vicinity. Bathymetry is also shown contour interval is m and thick contour is drawn every m. Interpretation of the active faults is also shown on the bathymetry blue line: normal active fault. m m

11 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al. Fig. Anaglyph image of Sofu Trough and its vicinity. Bathymetry is also shown contour interval is m and thick contour is drawn every m. Interpretation of the active faults is also shown on the bathymetry blue line: normal active fault. m m

12 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM Fig. Anaglyph image of Ogasawara Ridge and its vicinity. Bathymetry is also shown contour interval is m and thick contour is drawn every m. Interpretation of the active faults is also shown on the bathymetry blue line: normal active fault, red line: reverse active fault, dashed line: presumed active fault. m m

13 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al., m m m 5.4 孀婦岩構造線と孀婦舟状海盆の間に位置する単成火山群 Fig. km m 5.5 小笠原海嶺周辺の地形 Fig., m m 5.6 小笠原海台周辺の地形 Fig. Okamura et al., Mw.. N. N km

3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM Fig. Anaglyph image of Ogasawara Plateau and its vicinity.

14 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM Fig. Anaglyph image of Ogasawara Plateau and its vicinity. Bathymetry is also shown contour interval is m and thick contour is drawn every m. Interpretation of the active faults is also shown on the bathymetry blue line: normal active fault, red line: reverse active fault, dashed line: presumed active fault. m m

15 Noriaki IZUMI, Azusa NISHIZAWA, Mitsuhiro OIKAWA et al., m km 6 変動地形学的に認定される活断層と地震 M km km M km, m km M 文献 Debari S Fryer P JAMSTEC DEM D mdem D m DEM D DEM D kanto/p _ _izu-ogasawara.htm

16 3D bathymetric image of the Izu Ogasawara Trench and its vicinity based on 150m grid DEM japan m.grd svd/eqev/data/gaikyo/monthly/ / monthly.pdf OGr OGmA OGmF Okamura,Y., Murakami, F., K. Kishimoto and E. Saito Seismic Profiling Survey of the Ogasawara Plateau and the Michelson Ridge, Western Pacific: Evolution of Cretaceous Guyots and Deformation of Subducting Oceanic Plateau, Bull. Geol. Survey of Japan,,. CD ROM 要旨 JAMSTEC m DEM DEM

17 157 Fig. 10 Anaglyph image of the Izu Ogasawara Trench and its surrounding area. 図 10 伊豆小笠原海溝及び周辺のアナグリフ図

技術報告 REPORT OF HYDROGRAPHIC AND OCEANOGRAPHIC RESEARCHES No.54 March, 2017 D 3D bathymetric image of the southwestern part of the Kuril Trench and its

技術報告 REPORT OF HYDROGRAPHIC AND OCEANOGRAPHIC RESEARCHES No.54 March, 2017 D 3D bathymetric image of the southwestern part of the Kuril Trench and its vicinity Noriaki IZUMI, Azusa NISHIZAWA, Daishi HORIUCHI,