Development of formation age estimation of natural gas hydrate

• Project/Area Number: 21686084
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Earth system and resources enginnering
• Research Institution: Osaka University
• Principal Investigator: TANI Atsushi Osaka University, 大学院・理学研究科, 助教 (10335333)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥26,260,000 (Direct Cost: ¥20,200,000、Indirect Cost: ¥6,060,000); Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2009: ¥23,010,000 (Direct Cost: ¥17,700,000、Indirect Cost: ¥5,310,000)
• Keywords: メタンハイドレート / 海洋資源 / 放射線 / 天然ガス / 地球化学 / 生成年代推定 / ガスクロマトグラフ質量分析計 / 間隙水 / メタノール / ホルムアルデヒド / 自然放射線 / 天然ガス資源 / ガスクロマトグラフ質量分析 / プロトン移動反応質量分析 / γ線 / アルコール

Research Abstract

I have investigated to develop a methodology to estimate formation age of natural gas hydrate. The remarkable findings are as follows. (1) Headspace analysis with gas chromatography mass spectrometry is one of the best methods to detect extremely low concentration of methanol in water. (2) Formaldehyde as well as methanol are main compounds formed by gamma-ray irradiation in methane hydrate. (3) Methanol and formaldehyde in pore water of deep-sea sediments gradually increase with depth.

Research Products

• [Journal Article] In-situ ESR observation of methyl radical in gamma-irradiated methane hydrate under high pressure. (2011)
  • Author(s): A.Tani, K.Takato, T.Sugahara, K.Ohgaki, K.Takeya
  • Journal Title: Physics and Chemistry of Ice 2010 Pages: 273-276
  • Peer Reviewed
• [Journal Article] Thermal stability of radicals induced in xenon hydrate. (2011)
  • Author(s): K.Takeya, A.Tani, T.Sugahara, K.Ohgaki
  • Journal Title: Physics and Chemistry of Ice 2010 Pages: 267-27
  • Peer Reviewed
• [Journal Article] Decay mechanisms of radiation-induced radicals in sulfur hexafluoride clathrate hydrate. (2011)
  • Author(s): K.Takato, A.Tani, T.Sugahara.K.Takeya, K.Ohgaki
  • Journal Title: Physics and Chemistry of Ice 2010 Pages: 261-266
  • Peer Reviewed
• [Journal Article] Trace analysis of compounds formed in gamma-irradiated ethane hydrate. (2011)
  • Author(s): T.Higuchi, T.Murayama, A.Tani
  • Journal Title: Physics and Chemistry of Ice 2010 Pages: 161-165
  • Peer Reviewed
• [Journal Article] In-situ Raman observation on aqueous solution around tetra-n-butyl ammonium bromide semi-clathrate hydrates. (2011)
  • Author(s): M.Oshima, S.Hashimoto, A.Tani, T.Sugahara, W.Shimada, K.Ohgaki
  • Journal Title: Physics and Chemistry of Ice 2010 Pages: 141-146
  • Peer Reviewed
• [Journal Article] In-situ ESR observation of methyl radical in gamma-irradiated methane hydrate under high pressure (2011)
  • Author(s): A.Tani, K.Takato, T.Sugahara, K.Ohgaki, K.Takeya
  • Journal Title: Physics and Chemistry of Ice 2010 Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Thermal stability of radicals induced in xenon hydrate (2011)
  • Author(s): K.Takeya, A.Tani, T.Sugahara, K.Ohgaki
  • Journal Title: Physics and Chemistry of Ice 2010 Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Decay mechanisms of radiation-induced radicals in sulfur hexafluoride clathrate hydrate (2011)
  • Author(s): K.Takato, A.Tani, T.Sugahara, K.Takeya, K.Ohgaki
  • Journal Title: Physics and Chemistry of Ice 2010 Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] In-situ Raman observation on aqueous solution around tetra-n-butyl ammonium bromide semi-clathrate hydrates (2011)
  • Author(s): M.Oshima, S.Hashimoto, A.Tani, T.Sugahara, W.Shimada, K.Ohgaki
  • Journal Title: Physics and Chemistry of Ice 2010 Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Trace analysis of compounds formed in gamma-irradiated ethane hydrate (2011)
  • Author(s): T.Higuchi, T.Murayama, A.Tani
  • Journal Title: Physics and Chemistry of Ice 2010 Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Memory effect on semi-clathrate hydrate formation : A case study of tetragonal tetra-n-butyl ammonium bromide hydrate. (2010)
  • Author(s): M.Oshima, W.Shimada, S.Hashimoto, A.Tani, K.Ohgaki
  • Journal Title: Chemical Engineering Science 65 Pages: 5442-5446
  • Peer Reviewed
• [Journal Article] Direct aqueous injection analysis of trace compounds in water with proton-transfer-reaction mass spectrometry (PTR-MS). (2010)
  • Author(s): S.Jurschik, A.Tani, P.Sulzer, S.Haidacher, A.Jordan, R.Schottkowsky, E.Hartungen, G.Hanel, H.Seehauser, L.Mark, T.D.Mark
  • Journal Title: International Journal of Mass Spectrometry 289 Pages: 173-176
  • Peer Reviewed
• [Journal Article] Memory effect on semi-clathrate hydrate formation : A case study of tetragonal tetra-n-butyl ammonium bromide hydrate (2010)
  • Author(s): M.Oshima, W.Shimada, S.Hashimoto, A.Tani, K.Ohgaki
  • Journal Title: Chemical Engineering Science Volume: 65 Pages: 5442-5446
  • Peer Reviewed
• [Journal Article] Direct aqueous injection analysis of trace compounds in water with proton- transfer-reaction mass spectrometry (PTR-MS) (2010)
  • Author(s): S.Jurschik, A.Tani, P.Sulzer, more
  • Journal Title: International Journal of Mass Spectrometry 289 Pages: 173-176
  • Peer Reviewed
• [Presentation] 天然ガスハイドレートの生成年代推定法開発の現状と課題 (2011)
  • Author(s): 谷篤史, 樋口拓弥, 山本直弥
  • Organizer: 第27回ESR応用計測研究会・2010年度ルミネッセンス年代測定研究会
  • Place of Presentation: 海洋研究開発機構(横浜)
  • Year and Date: 2011-03-04
• [Presentation] 天然ガスハイドレートの生成年代推定法開発の現状と課題 (2011)
  • Author(s): 谷篤史, 樋口拓弥, 山本直弥
  • Organizer: 第27回ESR応用計測研究会
  • Place of Presentation: 海洋研究開発機構(横浜)
  • Year and Date: 2011-03-04
• [Presentation] 放射線照射を受けたCO_2ハイドレートにおいて温度により変化するラジカルの反応 (2011)
  • Author(s): 大島基, 谷篤史, 北野勝久, 菅原武, 大垣一成
  • Organizer: 第27回ESR応用計測研究会・2010年度ルミネッセンス年代測定研究会
  • Place of Presentation: 海洋研究開発機構(横浜)
  • Year and Date: 2011-03-03
• [Presentation] 放射線照射を受けたCO_2ハイドレートにおいて温度により変化するラジカルの反応 (2011)
  • Author(s): 大島基, 谷篤史, 北野勝久, 菅原武, 大垣一成
  • Organizer: 第27回ESR応用計測研究会
  • Place of Presentation: 海洋研究開発機構(横浜)
  • Year and Date: 2011-03-03
• [Presentation] 放射線により天然ガスハイドレートに生成する化合物について (2010)
  • Author(s): 谷篤史, 樋口拓弥, 山本直弥, 村山達郎
  • Organizer: 第2回メタンハイドレート総合シンポジウム
  • Place of Presentation: 産業技術総合研究所(東京)
  • Year and Date: 2010-12-02
• [Presentation] Organic compounds formed by radiation in methane and ethane hydrates. (2010)
  • Author(s): A.Tani, T.Higuchi, N.Yamamoto, T.Murayama.
  • Organizer: International Symposium on Methane Hydrate Resources
  • Place of Presentation: Tokyo Olympic Center (Tokyo).
  • Year and Date: 2010-11-17
• [Presentation] Organic compounds formed by radiation in methane and ethane hydrates (2010)
  • Author(s): A.Tani, T.Higuchi, N.Yamamoto, T.Murayama
  • Organizer: International Symposium on Methane Hydrate Resources
  • Place of Presentation: Tokyo Olympic Center (Tokyo)
  • Year and Date: 2010-11-17
• [Presentation] TBAB semi-clathrate hydrateの分解プロセスにおける結晶構造の緩和～ラマン分光法その場観察による検討～ (2010)
  • Author(s): 大島基, 橋本俊輔, 谷篤史, 菅原武, 島田亙,大垣一成
  • Organizer: 雪氷研究大会(2010・仙台)
  • Place of Presentation: 東京エレクトロンホール宮城(仙台)
  • Year and Date: 2010-09-29
• [Presentation] In-situ ESR observation of free radicals in gas hydrate under high pressure. (2010)
  • Author(s): A.Tani, K.Takato, T.Sugahara, K.Ohgaki, K.Takeya.
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University Conference Hall (Sapporo).
  • Year and Date: 2010-09-09
• [Presentation] Thermal stability of radicals induced in xenon hydrate. (2010)
  • Author(s): K.Takeya, A.Tani, T.Sugahara, K., Ohgaki
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University Conference Hall (Sapporo).
  • Year and Date: 2010-09-09
• [Presentation] Decay mechanisms of radiation-induced radicals in sulfur hexafluoride clathrate hydrate. (2010)
  • Author(s): K.Takato, A.Tani, T.Sugahara, K.Takeya, K.Ohgaki.
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University Conference Hall (Sapporo).
  • Year and Date: 2010-09-09
• [Presentation] In-situ Raman observation on aqueous solution around tetra-n-butyl ammonium bromide semi-clathrate hydrates. (2010)
  • Author(s): M.Oshima, S.Hashimoto, W.Shimada, A.Tani, T.Sugahara, K.Ohgaki.
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University Conference Hall (Sapporo).
  • Year and Date: 2010-09-09
• [Presentation] In-situ Raman observation on aqueous solution around tetra-n-butyl ammonium bromide semi-clathrate hydrates (2010)
  • Author(s): M.Oshima, S.Hashimoto, W.Shimada, A.Tani, T.Sugahara, K.Ohgaki
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University (Sapporo)
  • Year and Date: 2010-09-09
• [Presentation] Decay mechanisms of radiation-induced radicals in sulfur hexafluoride clathrate hydrate (2010)
  • Author(s): K.Takato, A.Tani, T.Sugahara, K.Takeya, K.Ohgaki
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University (Sapporo)
  • Year and Date: 2010-09-09
• [Presentation] Thermal stability of radicals induced in xenon hydrate (2010)
  • Author(s): K.Takeya, A.Tani, Sugahara, K.Ohgaki
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University (Sapporo)
  • Year and Date: 2010-09-09
• [Presentation] In-situ ESR observation of free radicals in gas hydrate under high pressure (2010)
  • Author(s): A.Tani, K.Takato, T.Sugahara, K.Ohgaki, K.Takeya
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University (Sapporo)
  • Year and Date: 2010-09-09
• [Presentation] Trace analysis of compounds formed in gamma-irradiated ethane hydrate. (2010)
  • Author(s): T.Higuchi, T.Murayama, A.Tani.
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University Conference Hall (Sapporo).
  • Year and Date: 2010-09-07
• [Presentation] Trace analysis of compounds formed in gamma-irradiated ethane hydrate (2010)
  • Author(s): T.Higuchi, T.Murayama, A.Tani
  • Organizer: 12th International Conference on the Physics and Chemistry of Ice
  • Place of Presentation: Hokkaido University (Sapporo)
  • Year and Date: 2010-09-07
• [Presentation] エタンハイドレートにおいてγ線照射により生成する化合物について (2010)
  • Author(s): 樋口拓弥, 村山達郎, 谷篤史
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張メッセ(千葉)
  • Year and Date: 2010-05-24
• [Presentation] メタンハイドレートにおけるラジカル反応生成物 (2010)
  • Author(s): 谷篤史, 村山達郎, 樋口拓弥
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張メッセ(千葉)
  • Year and Date: 2010-05-24
• [Presentation] ガスハイドレート内部でおこる水素原子移動 (2010)
  • Author(s): 谷篤史
  • Organizer: 第40回ガスハイドレート研究会
  • Place of Presentation: 東京海洋大学(東京)
  • Year and Date: 2010-04-26
• [Presentation] ガスハイドレート内部でおこる水素原子移動 (2010)
  • Author(s): 谷篤史
  • Organizer: ガスハイドレート研究会 第40回記念大会
  • Place of Presentation: 東京海洋大学(東京)
  • Year and Date: 2010-04-26
• [Presentation] γ線照射により生成するMH中の極微量成分の分析 (2010)
  • Author(s): 村山達郎, 樋口拓弥, 谷篤史
  • Organizer: 第26回ESR応用計測研究会・2009年度ルミネッセンス年代測定研究会
  • Place of Presentation: 函館五島軒(函館)
  • Year and Date: 2010-03-06
• [Presentation] γ線照射により生成するMH中の極微量成分の分析 (2010)
  • Author(s): 村山達郎, 樋口拓弥, 谷篤史
  • Organizer: 第26回ESR応用計測研究会
  • Place of Presentation: 五島軒(函館北海道)
  • Year and Date: 2010-03-06
• [Presentation] ガスハイドレートにおけるフリーラジカル種の挙動 (2009)
  • Author(s): 谷篤史
  • Organizer: 材料学会極限環境部門講演会
  • Place of Presentation: 同志社大学(京都)
  • Year and Date: 2009-12-18
• [Presentation] ガスハイドレートに見られる水素原子移動 (2009)
  • Author(s): 谷篤史, 中辻健太郎, 南尚志, 小林真大, 菅原武, 大垣一成
  • Organizer: 日本電子スピンサイエンス学会
  • Place of Presentation: 神戸大学(神戸)
  • Year and Date: 2009-11-11
• [Presentation] 放射線により生成するメタンハイドレート中の微量メタノール～メタンハイドレートの生成年代決定を目指して～ (2009)
  • Author(s): 村山達郎, 谷篤史
  • Organizer: 2009年度日本地球化学会
  • Place of Presentation: 広島大学(広島)
  • Year and Date: 2009-09-15
• [Presentation] 放射線により生成するメタンハイドレート中の微量メタノール (2009)
  • Author(s): 村山達郎, 谷篶史
  • Organizer: 2009年度 日本地球化学会年会
  • Place of Presentation: 広島大学
  • Year and Date: 2009-09-15
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