2009 Fiscal Year Final Research Report
Study of the role of seafloor hydrothermal circulation associate with the distribution and fate of dissolved organic matter in the seawater
Project/Area Number |
19740335
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Single-year Grants |
Research Field |
Geochemistry/Astrochemistry
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Research Institution | Okayama University |
Principal Investigator |
YAMANAKA Toshiro Okayama University, 大学院・自然科学研究科, 准教授 (60343331)
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Research Collaborator |
AKASHI Hironori 岡山大学, 大学院・自然科学研究科, 大学院生
MAETO Kotaro 岡山大学, 大学院・自然科学研究科, 大学院生
MIYOSHI Yoko 九州大学, 大学院・理学府, 大学院生
FUJINO Keiko 九州大学, 大学院・工学府, 大学院生
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Project Period (FY) |
2007 – 2009
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Keywords | 海洋炭素循環 / 海底熱水活動 / 溶存有機物 / 低分子有機酸 / 地下生物圏 |
Research Abstract |
In the ocean water significant amount of dissolved organic matter exist and its net amount has been estimated as much as gaseous carbon in the atmosphere as CO2. However, it has not well understood that the behavior of dissolved organic matter in the oceans. This study aimed to understand the role of the hydrothermal activity with respect to the behavior of ocean DOC. The analytical results of this study suggest that the direct impact to the distribution of ocean DOC by the hydrothermal circulation is minimal, although the process of the hydrothermal circulation works principally as sink of ocean DOC by decomposition and/or adsorption of DOC. On the other hand, hydrothermal plum formed by mixing with seawater and hydrothermal fluid has been considered potential source of ocean DOC, which is expected strong impact to the ocean DOC pool. In the plum water high microbial activity has been detected, so the activity may plausible source of the DOC.
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Research Products
(31 results)
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[Journal Article] Marine shallow-water hydrothermal activity and mineralization at the Wakamiko crater in Kagoshima bay, south Kyushu, Japan.2008
Author(s)
Ishibashi, J. -I., Nakaseama, M., Seguchi, M., Yamashita, T., Doi, S., Sakamoto, T., Shimada, N., Noguchi, T., Oomori, T., Kusakabe, M., Yamanaka, T.
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Journal Title
Journal of Volcanology and Geothermal Research Vol.173
Pages: 84-98
Peer Reviewed
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[Journal Article] Fluid-sediment interaction in a marine shallow-water hydrothermal system in the Wakamiko submarine crater, south Kyushu, Japan.2008
Author(s)
Nakaseama, M., Ishibashi, J., Ogawa, K., Hamasaki, H., Fujino, K., Yamanaka, T.
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Journal Title
Resource Geology Vol.58
Pages: 289-300
Peer Reviewed
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[Presentation] 南部沖縄トラフ多良間海丘における熱水活動探査-NT09-10Leg. 2航海概要報告-.2010
Author(s)
山中寿朗, 前藤晃太郎, 陣内彩子, 布浦拓郎, 牧田寛子, 阿部真理子, 渡部裕美, 中村謙太郎, 高井研, 平尾真吾, 大嶋将吾, 石橋純一郎, 岩田大吾, 井上一大, 上野雄一郎, 吉田尚弘, 野村直子, 徐美恵, 砂村倫成, 河合純, 豊田新, 佐藤文寛
Organizer
Blue Earth 10シンポジウム
Place of Presentation
東京海洋大学(東京)
Year and Date
2010-03-02
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[Presentation] NT09-10 Leg. 2. 航海乗船研究者一同. 南部沖縄トラフ多良間海丘にて確認された褐色変色域での微生物調査.2010
Author(s)
牧田寛子, 阿部真理子, 布浦拓郎, 渡部裕美, 中村謙太郎, 高井研, 山中寿朗, 前藤晃太郎, 陣内彩子, 平尾真吾, 大嶋将吾, 岩田大吾, 井上一大, 野村直子, 徐美恵, 河合純, 豊田新, 佐藤文寛
Organizer
Blue Earth 10シンポジウム
Place of Presentation
東京海洋大学(東京)
Year and Date
2010-03-02
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[Presentation] 鹿児島湾若尊火口底における熱水活動域の分布と熱水性沈殿物の特徴(速報)2009
Author(s)
山中寿朗, 前藤晃太郎, 赤司裕紀, 三好陽子, 平尾真吾, 石橋純一郎, 岡村慶, 杉山拓, 上嶋正人, 田中明子, 大村亜希子, 窪川かおる
Organizer
ブルーアースシンポジウム
Place of Presentation
立教大学(東京)
Year and Date
2009-03-12
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[Presentation] Unique shallow-water hydrothermal system associated with submarine volcanism in the Aira caldera2008
Author(s)
Yamanaka T, Maeto K, Akashi H, Yokoyama M, Chiba H, Ishibashi J-I, Nakaseama M, Okamura K, Sugiyama T, Fujino K
Organizer
Goldschmidt Conference 2008 in Vancouver
Place of Presentation
South Kyushu, Japan
Year and Date
2008-07-15
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[Presentation] Acive shallow-water submarine hydrothermal venting and occurence of chimney-like mineral deposits from Northern Kagoshima Bay2007
Author(s)
Toshiro Yamanaka, Jun-ichiro Ishibashi, Kotaro Maeto, Miwako Nakaseama, Kei Okamura, Taku Sugiyama, Keiko Fujino, Hiroyuki Kimura
Organizer
South Kyushu, Japan, American Geophysical Union Fall Meeting
Place of Presentation
Moscone Center, San Francisco, CA, USA
Year and Date
2007-12-11
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