Experimental studies on formation and dissociation of methane hydrates under ocean floor

• Project/Area Number: 21540498
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Petrology/Mineralogy/Science of ore deposit
• Research Institution: Meiji University
• Principal Investigator: NAGASHIMA Kazushige 明治大学, 理工学部, 准教授 (70339571)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: メタンハイドレート / 結晶成長 / 形態形成 / 凍上現象 / 自己組織化

Research Abstract

All patterns of natural gas hydrates found under marine sediments were first reproduced by model experiments using the mixture of THF water solution and glass beads. The hydrate patterns were found to be classified in a diagram as a function of growth rate of hydrates and the mixing ratio between two diameters of glass beads. Qualitative model of formation mechanism of hydrate patterns were proposed. In addition, the diffusion effects of guest molecules were clarified by the experiments using dilute THF water solution in glass beads and the experiments in THF/water concentration boundary.

Research Products

• [Journal Article] Foreign particle behavior at the growth interface of tetrahydrofuran clathrate hydrates (2011)
  • Author(s): T. Suzuki, M. Muraoka, K. Nagashima
  • Journal Title: J. Crystal Growth Volume: Vol.318 Issue: 1 Pages: 131-134
  • DOI: 10.1016/j.jcrysgro.2010.11.083
  • Peer Reviewed
• [Journal Article] Foreign particle behavior at the growth interface of tetrahydrofuran clathrate hydrates (2011)
  • Author(s): T.Suzuki, M.Muraoka, K.Nagashima
  • Journal Title: J.Crystal Growth Volume: 318 Pages: 131-134
  • Peer Reviewed
• [Journal Article] Growth Mode Transition of Tetrahydrofuran Clathrate Hydrates in the Guest/Host Concentration Boundary Layer (2009)
  • Author(s): Y. Sabase, K. Nagashima
  • Journal Title: J. Physical Chemistry B Volume: Vol.113 Issue: 46 Pages: 15304-15311
  • DOI: 10.1021/jp905233n
  • Peer Reviewed
• [Journal Article] Growth Mode Transition of Tetrahydrofuran Clathrate Hydrates in the Guest/Host Concentration Boundary Layer (2009)
  • Author(s): Y.Sabase, K.Nagashima
  • Journal Title: J.Physical Chemistry B 113 Pages: 15304-15311
  • Peer Reviewed
• [Presentation] コロイド懸濁液中でのハイドレート結晶の自己組織化パターンの形成 (2012)
  • Author(s): 村岡道弘、長島和茂
  • Organizer: 日本化学会第92春季年会
  • Place of Presentation: 慶応大学日吉キャンパス
  • Year and Date: 2012-03-27
• [Presentation] THFハイドレートのケージ占有率の成長条件依存性 (2012)
  • Author(s): 宮田友哉、長島和茂
  • Organizer: 日本化学会第92春季年会
  • Place of Presentation: 慶応大学日吉キャンパス
  • Year and Date: 2012-03-26
• [Presentation] 二相境界面におけるTHFハイドレート結晶の成長過程の実験的研究 (2012)
  • Author(s): 後藤弘旭、村岡道弘、長島和茂
  • Organizer: 日本化学会第92春季年会
  • Place of Presentation: 慶応大学日吉キャンパス
  • Year and Date: 2012-03-26
• [Presentation] Pattern formation of methane hydrate in oceanic sediment (2011)
  • Author(s): M. Muraoka, K. Nagashima
  • Organizer: 7th International Conference on Asian Marine Geology
  • Place of Presentation: Goa, India
  • Year and Date: 2011-10-11
• [Presentation] Pattern formation of methane hydrate in oceanic sediment (2011)
  • Author(s): M.Muraoka, K.Nagashima
  • Organizer: 7th International Conference on Asian Marine Geology
  • Place of Presentation: National Institute of Oceanography (CSIR), Goa, India
  • Year and Date: 2011-10-11
• [Presentation] 海底メタンハイドレートのパターン形成 (2011)
  • Author(s): 村岡道弘、長島和茂
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2011-05-22
• [Presentation] 海底メタンハイドレートのパターン形成 (2011)
  • Author(s): 村岡道弘、長島和茂
  • Organizer: 日本化学会第91春季年会
  • Year and Date: 2011-03-11
• [Presentation] Foreign particle behavior at the growth interface of tetrahydrofuran clathrate hydrates (2010)
  • Author(s): T. Suzuki, M. Muraoka, K. Nagashima
  • Organizer: 16^<th> International Conference on Crystal Growth
  • Place of Presentation: 国際会議場(北京)
  • Year and Date: 2010-08-09
• [Presentation] Foreign particle behavior at the growth interface of tetrahydrofiuan clathrate hydrates (2010)
  • Author(s): T.Suzuki, M.Muraoka, K.Nagashima
  • Organizer: 16^<th> International Conference on Crystal Growth
  • Place of Presentation: 国際会議場(北京)
  • Year and Date: 2010-08-09
• [Presentation] Frost Heaving of Clathrate Hydrates in Soil Model (2009)
  • Author(s): K. Nagashima, T. Suzuki, M. Nagamoto & T. Shimizu
  • Organizer: 27^<th> IAS Meeting of Sedimentologists
  • Place of Presentation: Alghero, Italy
  • Year and Date: 2009-09-23
• [Presentation] Pattern Formation of Tetrahydrofuran clathrate hydrates in soil model (2009)
  • Author(s): M. Muraoka, T. Suzuki & K. Nagashim
  • Organizer: 27^<th> IAS Meeting of Sedimentologists
  • Place of Presentation: Alghero, Italy
  • Year and Date: 2009-09-23
• [Presentation] Behavior of Foreign Particles at a Growth Interface of Tetrahydrofuran clathrate hydrates (2009)
  • Author(s): M. Muraoka, H. Tayama, T. Suzuki, K. Nagashima
  • Organizer: International Conference on High Pressure Science and Technology
  • Place of Presentation: Odaiba, Tokyo
  • Year and Date: 2009-07-29
• [Presentation] Behavior of Foreign Particles at a Growth Interface of Tetrahydrofuran clathrate hydrates (2009)
  • Author(s): M.Muraoka, H.Tayama, T.Suzuki, K.Nagashima
  • Organizer: International Conference on High Pressure Science and Technology (AIRAPT-22)
  • Place of Presentation: Odaiba, Tokyo
  • Year and Date: 2009-07-29
• [Remarks]
• [Remarks] 明治大学理工学部物理学科雪氷物理学研究室
  • URL: http://www.isc.meiji.ac.jp/~icephys
• [Remarks] 明治大学理工学部物理学科雪氷物理学研究室
  • URL: http://www.isc.meiji.ac.jp/~icephys