Presentations -

Appearance of iron-based microbial ecosystems on and below the seafloor: A case study of the southern Mariana Trough

Kato Shingo, Kentaro Nakamura, Tomohiro Toki, Jun-ichiro Ishibashi, Urumu Tsunogai, Akinari Hirota, Kutsuhiko Suzuki, Moriya Ohkuma, Akihiko Yamagishi

AGU 2012 Fall Meeting  (Moscone convention Center, San Francisco, California)  2012.12  -  2012.12 

Geochemistry of hydrothermal fluids at the Hatoma Knoll in Okinawa Trough

Tomohiro Toki, Michihiro Itoh, Daigo Iwata, Shogo Ohshima, Yoshiaki Urata, Tamotsu Oomori, Ryuichi Shinjo, Jun-ichiro Ishibashi, Urumu Tsunogai, Yuji Sano, Naoto Takahata, Toshiro Yamanaka, Shinichi Kawagucci, Yuichiro Ueno, Takuro Nunoura, Ken Takai

AGU 2012 Fall Meeting  (Moscone convention Center, San Francisco, California)  2012.12  -  2012.12 

10+ years of ACORK: Continuous pore pressure record from the decollement zone at Nankai Trough off Muroto

Masataka Kinoshita, Earl E. Davis, Keir Becker, Junichi Miyazaki, Samuel Hulme, Robert Meldrum, Tomohiro Toki, Geoffery C. Wheat, Takafumi Kasaya

AGU 2012 Fall Meeting  (Moscone convention Center, San Francisco, California)  2012.12  -  2012.12 

Biogeochemical study on mud-volcano sediments from the Kumano forearc basin, Japan

Akira Ijiri, Tomohiro Toki, Yasuhiko Yamaguchi, Shinsuke Kawagucci, Shohei Hattori, Yuki Morono, Mark A. Lever, Naohiro Yoshida, Urumu Tsunogai, Koichi Nakamura, Ken Takai, Juichiro Ashi, Fumio Inagaki

AGU 2011 Fall Meeting  (Moscone convention Center, San Francisco, California)  2011.12  -  2011.12 

Lithium isotopic evidence for deep-seated fluids from Kumano mud volcano in Nankai accretionary prism

Yoshiro Nishio, Akira Ijiri, Tomohiro Toki, Yuki Morono, Fumio Inagaki

AGU 2011 Fall Meeting  (Moscone convention Center, San Francisco, California)  2011.12  -  2011.12 

Microbiological investigation of the Iron-Containing Flocculent Mats in various deep sea environments

Hiroko Makita, Sakiko Kikuchi, Satoshi Mitsunobu, Kentaro Nakamura, Tomohiro Toki, Shinsuke Kawagucci, Takuroh Noguchi, Mariko Abe, Junichi Miyazaki, Toshiro Yamaknaka, 　Shinji Tsuchida, Hidetaka Nomaki, Yoshio Takahashi, Ken Takai

AGU 2011 Fall Meeting  (Moscone convention Center, San Francisco, California)  2011.12  -  2011.12 

Biogeochemical processes in mud-volcano sediments from the Kumano forearc basin, Japan

Akira Ijiri, Tomohiro Toki, Yasuhiko Yamaguchi, Shinsuke Kawagucci, Shohei Hattori, Yuki Morono, Mark A. Lever, Naohiro Yoshida, Urumu Tsunogai, Koichi Nakamura, Ken Takai, Juichiro Ashi, Fumio Inagaki

Goldschmidt 2011  (Prague, Czech Republic)  2011.08  -  2011.08 

Raman spectroscopic analyses on structure and composition of gas hydrate from Kumano mud volcano, Nankai Trough, Japan

Hitoshi Tomaru, Akira Ijiri, Tomohiro Toki, Fumio Inagaki, CK09-01 Shipboard Scientists

AGU 2009 Fall Meeting  (Moscone convention Center, San Francisco, California)  2009.12  -  2009.12 

Methane-utilizing Bathymodiolus mussels: measurement of methane consumption rates as a function of methane concentration and the effect of in situ pressure conditions

Hisako Hirayama, Takao Yoshida, Tomohiro Toki, Tomo-o Watsuji, Junichi Miyazaki, Mariko Abe, Hiroko Makita, Ken Takai

4th International Symposium on Chemosynthesis-Based Ecosystems-Hydrothermal Vents, Seeps and Other Reducing Habitats-  (Okinawa, Japan)  2009.06  -  2009.07 

Fluid geochemistry of the Suiyo hydrothermal field at the Izu-Bonin arc submarine volcano

Jun-ichiro Ishibashi, Hiroyuki Akashi, Toshiro Yamanaka, Tomohiro Toki, Genta Teranishi, Hajime Obata, Toshitaka Gamo

Goldschmidt 2009  (Davos, Switzerland)  2009.06  -  2009.06 

Gas Composition of the Venting Bubbles from the Formosa Ridge in the Gas Hydrate Potential Area, Offshore of SW Taiwan

Tsanyao Frank Yang, Tomohiro Toki, Saulwood Lin, Hideaki Machiyama, Chih-Hsien Sun

6th International Conference on Gas Hydrates  (Vancouver, Canada)  2008.07  -  2008.07 

Characteristics of dissolved organic matter in the hydrothermal fluids and the associated water samples obtained from arc-backarc systems

Hiroyuki Akashi, Toshiro Yamanaka, Jun-ichiro Ishibashi, Michinari Sunamura, Hiroyuki Kimura, Tomohiro Toki, Satoshi Nakagawa, Ken Takai

Goldschmidt 2008 -  (Vancouver, Canada)  2008.07  -  2008.07 

Mineralogical and chemical studies of ore deposits collected from the Hatoma Koll, southern Okinawa Trough

Hiroki Nakano, Jun-ichiro Ishibashi, Tokuroh Noguchi, Tomohiro Toki, Tamotsu Oomori

AOGS 5th Annual General Meeting  (Busan, Korea)  2008.06  -  2008.06 

Geochemical environment of hydrothermal system at Hatoma Knoll in Okinawa Trough

Tomohiro Toki

2008.03  -  2008.03 

Discovery of “Hydrothermal” Chemosynthetic Community in a Cold Seep Environment, Formosa Ridge: Seafloor Observation Results from First ROV Cruise, off Southwestern Taiwan

Hideaki Machiyama, Saulwood Lin, Katsunori Fujikura, Chi-Yue Huang, Chia-Yen Ku, Li-Hung Lin, Char-Shine Liu, Sumito Morita, Takuro Nunoura, Wonn Soh, Tomohiro Toki, Tsanyao Yang

AGU 2007 Fall Meeting  (Moscone convention Center, San Francisco, California)  2007.12  -  2007.12 

Anomalously low D/H ratio of H2 gas from high temperature hydrothermal fluids in the Mariana Trough

Shunsuke Kawagucci, Tomohiro Toki, Michihiro Ito, Tamotsu Oomori, Jun-ichiro Ishibashi, Harue Masuda, Ken Takai, Toshitaka Gamo

V.M.Goldschmidt Conference  (Cologne, Germany)  2007.08  -  2007.08 

Cold Seeps and Their Tectonic Implications in the IODP NanTroSEIZE Drilling Area

Juichiro Ashi, Tomohiro Toki, Shin’ichi Kuramoto, Masataka Kinoshita, Kumano Dive Scientific Party

AGU 2006 Fall Meeting  (Moscone convention Center, San Francisco, California)  2006.12  -  2006.12 

Seafloor hydrothermal activity at off-axisial seamounts of back-arc spreading in southern Mariana Trough

Jun-ichiro Ishibashi, Ryohei Suzuki, Toshiro Yamanaka, Tomohiro Toki, Hiroyuki Kimura, Takuro Noguchi, Tetsuro Urabe

V.M.Goldschmidt Conference  (Melbourne, Australia)  2006.08  -  2006.08 

Distribution of dissolved hydrogen in pore water at cold seep site

Tomohiro Toki, Kenji Maegawa, Urumu Tsunogai, Juichiro Ashi, Masataka Kinoshita, Toshitaka Gamo

AGU 2005 Fall Meeting  (Moscone convention Center, San Francisco, California)  2005.12  -  2005.12 

Methane distribution in plumes of the South Mariana Back-arc Spreading Center

Tomohiro Toki, Akinari Hirota, Urumu Tsunogai, Toshitaka Gamo, Koichi Nakamura, Takuro Noguchi, Naoto Taira, Tamotsu Oomori, Jun-ichiro Ishibashi, Motoo Utsumi

AGU 2004 Fall Meeting  (Moscone convention Center, San Francisco, California)  2004.12  -  2004.12