Geomagnetic field intensity variation deduced from oceanic crust

• Project/Area Number: 21540440
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Doshisha University
• Principal Investigator: FUKUMA Koji 同志社大学, 理工学部, 准教授 (80315291)
• Co-Investigator(Kenkyū-buntansha): ISOBE Hiroshi 熊本大学, 自然科学研究科, 准教授 (80311869) ; HAYASHIDA Akira 同志社大学, 理工学部, 教授 (30164974)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 地球磁場強度 / 海洋地殻 / テリエ法 / 古地磁気学 / 岩石磁気学

Research Abstract

To clarify the variation of the geomagnetic field intensity is important in order to elucidate the effect of shielding against cosmic rays and solar wind by the geomagnetic field. Past geomagnetic field intensities were determined using the oceanic crust that was erupted continuously over the past 100 million years and has recorded the geomagnetic field at the time of cooling. We found that geomagnetic field intensities are reliably retrieved from rapidly-quenched glassy and cryptocrystalline part of pillow lavas at the top of the oceanic crust. In addition, we were able to establish a protocol for screening subaerial lavas based on various magnetic measurements.

Research Products

• [Journal Article] Diffusion-controlled melting in granitic systems at 800-900℃and 100-200 MPa : Temperature and pressure dependence of the minimum diffusivity in granitic melts (2012)
  • Author(s): Takashi Yuguchi, Takadhi Yamaguchi, Manji-rou Iwamoto, Hibiki Eguchi, Hiroshi Isobe and Tadao Nishiyama
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 107 Pages: 57-73
  • NAID: 10030122277
  • Peer Reviewed
• [Journal Article] Absolute calibration of low-and high-field magnetic susceptibilities using rare earthoxides, Geochem (2011)
  • Author(s): Fukuma, K., and M. Torii
  • Journal Title: Geophys. Geosyst. Volume: 12 Issue: 7 Pages: n/a-n/a
  • DOI: 10.1029/2011gc003694
  • Peer Reviewed
• [Journal Article] 布田川・日奈久断層帯海域部におけるピストンコア調査 (2011)
  • Author(s): 井上直人, 北田奈緒子, 越後智雄, 久保尚大, 一井直宏, 林田明, 坂本泉, 滝野義幸, 楮原京子
  • Journal Title: 活断層・古地震研究報告 Volume: 第11号 Pages: 295-308
• [Journal Article] 布田川・日奈久断層帯海域部におけるピストンコア調査 (2011)
  • Author(s): 井上直人
  • Journal Title: 活断層・古地震研究報告 Volume: 11 Pages: 295-308
• [Journal Article] Millennial-scale vegetation changes for the last 40,000 years based on pollen record from Lake Biwa, Japan (2010)
  • Author(s): Hayashi, R., Takahara, H., Hayashida, A. and K. Takemura
  • Journal Title: Quaternary Research Volume: 74 Pages: 91-99
  • Peer Reviewed
• [Journal Article] 琵琶湖における過去5万年間の火山灰と堆積物 (2010)
  • Author(s): 竹村恵二, 岩部智紗, 林田明, 檀原徹, 北川浩之, 原口強, 佐藤智之, 石川尚人
  • Journal Title: 第四紀研究 Volume: 49 Pages: 147-160
  • NAID: 10026529337
  • Peer Reviewed
• [Journal Article] 琵琶湖1400m掘削試料の編年:フィッション・トラック年代とテフラ同定の再検討 (2010)
  • Author(s): 檀原徹, 山下透, 岩野英樹, 竹村恵二, 林田明
  • Journal Title: 第四紀研究 Volume: 49 Pages: 101-119
  • NAID: 10026529152
  • Peer Reviewed
• [Journal Article] Radiocarbon content of lignin-enriched fraction in core sediment from Lake Biwa, central Japan (2010)
  • Author(s): Kitagawa, H., Lim, J, Takemura, K., Hayashida, A. and T. Haraguchi
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section B : Beam Interactions with Materials and Atoms Volume: 268 Issue: 7-8 Pages: 1077-1079
  • DOI: 10.1016/j.nimb.2009.10.102
  • Peer Reviewed
• [Journal Article] Iron Mineral Fine Particles Produced by Acidic Hydrothermal Alteration Experiments of the Synthetic Martian Basalt (2010)
  • Author(s): Hiroshi Isobe and Miwako Yoshizawa
  • Journal Title: 41th Lunar and Planetary Science Conference Volume: #1292
• [Journal Article] Radiocarbon content of lignin-enriched fraction in core sediment from Lake Biwa, central Japan (2010)
  • Author(s): H.Kitagawa
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section B 268 Pages: 1077-1079
  • Peer Reviewed
• [Presentation] Formation of Hematite fine crystals by hydrothermal alteration of synthetic Martian basalt, static and fluid flow experiments (2011)
  • Author(s): Keita KOBAYASHI and Hiroshi ISOBE
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2011-12-07
• [Presentation] Evolution of morphology and crystallinity of silica minerals under hydrothermal conditions (2011)
  • Author(s): Hiroshi ISOBE and Tomomi CHOHATA
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2011-12-05
• [Presentation] 1986c溶岩流における古地磁気強度の鉛直変化 (2011)
  • Author(s): 福間浩司, 吉見梓, 伊豆大島
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 神戸
  • Year and Date: 2011-11-04
• [Presentation] 熱水性シリカ鉱物の形成条件とモルフォロジー (2011)
  • Author(s): 磯部博志
  • Organizer: 日本鉱物科学会年会
  • Place of Presentation: 水戸
  • Year and Date: 2011-09-09
• [Presentation] Testing paleointensity determinations on a drilled core of a historic lava in Sakurajima (2011)
  • Author(s): K. Fukuma, Fujii M., Miki D., and Ishikawa N.
  • Organizer: Japan International Union of Geodesy and Geophysics XXV General Assembly
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2011-07-05
• [Presentation] Archeointensity variation over the last millennium in Japan (2011)
  • Author(s): Masahiro Ooga, Koji Fukuma, and Kunihiko Wakabayashi
  • Organizer: International Union of Geodesy and Geophysics XXV General Assembly
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2011-07-04
• [Presentation] Testing paleointensity determinations on a drilled core of a historic lava in Sakurajima, Japan (2011)
  • Author(s): Koji Fukuma
  • Organizer: International Union of Geodesy and Geophysics XXV General Assembly
  • Place of Presentation: Melbourne Convention and Exhibition Center(メルボルン・オーストラリア)
  • Year and Date: 2011-07-04
• [Presentation] 熱水合成phyllosilicate鉱物の組成変動炭素質コンドライト隕石のphyllosilicateとの比較 (2011)
  • Author(s): 渡邉公典・尾崎弘子・磯部博志
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2011-05-26
• [Presentation] コロンビアリバー玄武岩における古地磁気強度に対する接触テスト (2011)
  • Author(s): 福間浩司, 齋藤武士
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2011-05-26
• [Presentation] 透過電子顕微鏡法による火星表面環境を再現した熱水変質実験生成物の解析 (2011)
  • Author(s): 吉澤実和子、磯部博志、安原聡、大西市朗、西岡秀夫
  • Organizer: 日本顕微鏡学会第67回学術講演会
  • Place of Presentation: 福岡国際会議場
  • Year and Date: 2011-05-16
• [Presentation] Aligned submicron grains in archeological potteries with high TRM anisotropy (2010)
  • Author(s): K. Fukuma, M. Ooga, and H. Isobe
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-16
• [Presentation] Aligned submicron grains in archeological potteries with high TRM anisotropy (2010)
  • Author(s): K.Fukuma
  • Organizer: American Geophysical Union, Fall Meeting
  • Place of Presentation: Moscone Convention Center(San Francisco, USA)
  • Year and Date: 2010-12-16
• [Presentation] Silica and Iron Oxide Minerals in Acidic Hydrothermal Alteration Products at Volcanic Fumaroles-Crystallinity of Cristobalite and Morphology of Hematite (2010)
  • Author(s): Hiroshi ISOBE and Yoko KORENAGA
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-14
• [Presentation] 桜島大正溶岩コアを用いた古地磁気強度のテスト測定 (2010)
  • Author(s): 福間浩司, 藤井真理子, 味喜大介, 石川尚人
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 那覇
  • Year and Date: 2010-11-02
• [Presentation] 石器から得られた京都における13世紀から17世紀の考古地磁気強度 (2010)
  • Author(s): 大賀正博, 福間浩司, 磯部博志, 若林邦彦
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 那覇
  • Year and Date: 2010-11-01
• [Presentation] 大分県由布市伽藍岳における熱水変質現象とクリストバライトの結晶学的性質 (2010)
  • Author(s): 磯部博志・是永瑶子
  • Organizer: 日本鉱物科学会年会
  • Place of Presentation: 松江
  • Year and Date: 2010-09-24
• [Presentation] 初磁化率測定のキャリブレーション (2010)
  • Author(s): 福間浩司, 鳥居雅之
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2010-05-25
• [Presentation] 硫酸およびCO2存在下での合成Basalt粉末熱水変質組織の再現 (2010)
  • Author(s): 小林圭太・磯部博志
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2010-05-25
• [Presentation] Allende隕石chondrule及びaggregate中のmesostasis物質の比較 (2010)
  • Author(s): 田浦志歩・磯部博志
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2010-05-23
• [Presentation] Iron Mineral Fine Particles Produced by Acidic Hydrothermal Alteration Experiments of the Synthetic Martian Basalt (2010)
  • Author(s): Hiroshi Isobe and Miwako Yoshizawa
  • Organizer: 41th Lunar and Planetary Science Conference
  • Place of Presentation: The Woodlands, Texas, USA
  • Year and Date: 2010-03-02
• [Presentation] 大分県由布市伽藍岳に産する熱水変質生成物の産状とクリストバライトの結晶学的性質 (2010)
  • Author(s): 是永瑶子・磯部博志
  • Organizer: 第158回日本地質学会西日本支部例会
  • Place of Presentation: 福岡
  • Year and Date: 2010-02-13
• [Presentation] 高保磁力を示すチタノマグネタイトを含む火山岩の低温ヒステリシス特性 (2009)
  • Author(s): 福間浩司
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 金沢
  • Year and Date: 2009-09-28
• [Presentation] 日本における14世紀以降の考古地磁気強度変動 (2009)
  • Author(s): 大賀正博, 福間浩司, 中屋啓太, 若林邦彦
  • Organizer: 地球電磁気・地球惑星圏学会
  • Place of Presentation: 金沢
  • Year and Date: 2009-09-28
• [Presentation] Low-temperature hysteresis properties of high-coercivity titanomagnetite bearing rocks (2009)
  • Author(s): K. Fukuma
  • Organizer: 11th Scientific Assembly of International Associaion of Geomagnetism and Aeronomy
  • Place of Presentation: Sopron, Hungary
  • Year and Date: 2009-08-26
• [Presentation] Low-temperature hysteresis properties of high-coercivity titanomagnetite bearing rocks (2009)
  • Author(s): K.Fukuma
  • Organizer: 11th Scientific Assembly of International Association of Geomagnetism and Aeronomy
  • Place of Presentation: Sopron, Hungary
  • Year and Date: 2009-08-26
• [Presentation] テリエ法における枕状溶岩と陸上溶岩の振舞いの比較 (2009)
  • Author(s): 福間浩司, 大賀正博, 林田明, Lee Youn Soo
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-18
• [Presentation] 下北沖から採取された堆積物(CK05-04 Leg 2)の磁気特性と続成作用 (2009)
  • Author(s): 大賀正博, 安田雅彦, 林田明, 福間浩司.小玉一人
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-18
• [Presentation] Evolution of the metasomatic zoning : temporal change in the growth mode in the system dolomite-quartz-H2O (2009)
  • Author(s): Takanori Tanoue, Tadao Nishiyama and Hiroshi Isobe
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-17
• [Presentation] 合成Basaltを用いた硫酸およびCO2存在下の熱水変質実験による火星土壌の再現 (2009)
  • Author(s): 吉澤実和子, 磯部博志
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-17
• [Presentation] 原始惑星物質の還元環境下での水質変成作用によるphyllosilicate鉱物の組成変動 (2009)
  • Author(s): 尾崎弘子, 磯部博志
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張
  • Year and Date: 2009-05-16