Investigation of localized 3-D elastic and anelastic structures by body-wave waveform inversion

• Project/Area Number: 22540433
• 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: The University of Tokyo
• Principal Investigator: GELLER Robert 東京大学, 大学院・理学系研究科, 教授 (40170154)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 内部構造 / 地球内部構造 / 地震波形インバージョン / 波形インバージョン / 実体波 / アレイ解析

Research Abstract

We have developed methods for inverting seismic waveform data for 3-D Earth structure. We made preliminary applications of our methods to datasets recorded by dense array network of seismometers and obtained3-D shear velocity structures in the lowermost mantle beneath Central America and the western Pacific. The obtained model for Central America suggests that there is a high velocity zone which associates with a subducted cold slab. The obtained model for thewestern Pacific suggests the existence of thermal plumes.

Research Products

• [Journal Article] Waveform inversion of broad-band body-wave data for the S-velocity structure in the lowermost mantle bneath the Indian subcontinent and Tibetan Plateau (2012)
  • Author(s): Konishi, K., K. Kawai, R.J. Geller and N. Fuji
  • Journal Title: Geophys. J. Int., Volume: 191 Pages: 305-316
  • Peer Reviewed
• [Journal Article] Partial derivatives of high-frequency compressional body waves for 3-D Earth structure (2012)
  • Author(s): Fuji, N., S. Chevrot, L. Zhao, R.J. Geller, and K. Kawai
  • Journal Title: Geophys. J. Int. Volume: 190 Pages: 522-540
  • Peer Reviewed
• [Journal Article] Waveform inversion of broad-band body wave data for the S-velocity structure in the lowermost mantle beneath the Indian subcontinent and Tibetan Plateau (2012)
  • Author(s): Kensuke Konishi
  • Journal Title: Geophysical Journal International Volume: 191 Issue: 1 Pages: 305-316
  • DOI: 10.1111/j.1365-246x.2012.05614.x
  • Peer Reviewed
• [Journal Article] Finite-frequency structural sensitivities of short-period compressional body waves (2012)
  • Author(s): Fuji Nobuaki
  • Journal Title: Geophysical Journal International Volume: 190 Issue: 1 Pages: 522-540
  • DOI: 10.1111/j.1365-246x.2012.05495.x
  • Peer Reviewed
• [Journal Article] Partial derivatives of high-frequency compressional body waves for 3-D Earth structure (2012)
  • Author(s): Fuji Nobuaki, et al.
  • Journal Title: Geophysical Journal International Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] High-P, T phase relations in the NaAlSi_2O_6 system from first principles computation (2012)
  • Author(s): Kawai Kenji, T.Tsuchiya
  • Journal Title: Physics and Chemistry of Minerals Volume: 39 Pages: 305-310
  • Peer Reviewed
• [Journal Article] First-principles investigations of elasticity and phase transition of grossular garnet (2012)
  • Author(s): Kawai, K., T.Tsuchiya
  • Journal Title: Journal of Geophysical Research Volume: 117 Issue: B2
  • DOI: 10.1029/2011jb008529
  • Peer Reviewed
• [Journal Article] Phase stability and elastic properties of the NAL and CF phases in the NaMg_2Al_5SiO_<12> system from first principles (2012)
  • Author(s): Kawai K., Tsuchiya T.
  • Journal Title: American Mineralogist Volume: 97 Pages: 305-314
  • Peer Reviewed
• [Journal Article] Inversion of seismic waveforms for shear wave velocity structure in the lowermost mantle beneath the Hawaiian hotspot (2010)
  • Author(s): Kawai, K., and R.J. Geller
  • Journal Title: Phys. Earth Planet. Inter. Volume: 183 Pages: 136-142
  • Peer Reviewed
• [Journal Article] Waveform inversion for S-wave structure in the lowermost mantle beneath the Arctic Implications for mineralogy and chemical composition (2010)
  • Author(s): Kawai, K., R.J. Geller, and N. Fuji
  • Journal Title: Geophys. Res. Lett. Volume: 37 Issue: 16
  • DOI: 10.1029/2010gl043654
  • Peer Reviewed
• [Journal Article] The vertical flow in the lowermost mantle beneath the Pacific from inversion of seismic waveforms for anisotropic structure (2010)
  • Author(s): Kawai, K., and R.J. Geller
  • Journal Title: Earth Planet. Sci. Lett. Volume: 297 Pages: 190-198
  • Peer Reviewed
• [Journal Article] A methodology for inversion of broadband seismic waveforms for elastic and anelastic structure and its application to the mantle transition zone beneath the northwestern Pacific (2010)
  • Author(s): Fuji, N., K. Kawai, and R.J. Geller
  • Journal Title: Phys. Earth Planet. Inter. Volume: 180 Pages: 118-137
  • Peer Reviewed
• [Journal Article] Waveform inversion for localized seismic structure and an applications to D" structure beneath the (2010)
  • Author(s): Kawai, K., and R.J. Geller
  • Journal Title: Pacific, J. Geophys. Res. Volume: 115 Issue: B1
  • DOI: 10.1029/2009jb006503
  • Peer Reviewed
• [Journal Article] Waveform inversion for S-wave structure in the lowermost mantle beneath the Arctic : Implications for mineralogy and chemical composition (2010)
  • Author(s): K.Kawai, R.J.Geller, N.Fuji
  • Journal Title: Geophysical Research Letters Volume: Volume:37
  • Peer Reviewed
• [Journal Article] Inversion of seismic waveforms for shear wave velocity structure in the lowermost mantle beneath the Hawaiian hotspot (2010)
  • Author(s): Kawai, K, Geller, R
  • Journal Title: Physics of the Earth and Planetary Interiors Volume: Volume:183 Pages: 136-142
  • Peer Reviewed
• [Journal Article] The vertical flow in the lowermost mantle beneath the Pacific from inversion of seismic waveforms for anisotropic structure (2010)
  • Author(s): Kawai, K, Geller, RJ
  • Journal Title: Earth and Planetary Science Letters Volume: Volume:297 Pages: 190-198
  • Peer Reviewed
• [Presentation] Methods for inversion of body-wave waveforms for localized three-dimensional seismicstructure and an application to D" structure beneath Central America (2012)
  • Author(s): Kenji Kawai, Kensuke Konishi, Robert J. Geller, Nobuaki Fuji
  • Organizer: American Geophysical Union Fall Meeting,
  • Place of Presentation: San Francisco USA
  • Year and Date: 2012-12-05
• [Presentation] Waveform inversion for three dimensional shear velocity structure in the lowermost mantle beneath the western Pacific using data from a dense Japanese seismic network (2012)
  • Author(s): Kensuke Konishi, Kenji Kawai, Robert J. Geller, Nobuaki Fuji
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2012-12-05
• [Presentation] Waveform inversion for Earth structure: Progress and Prospects (2012)
  • Author(s): Robert J. Geller, Kenji Kawai, Kensuke Konishi, Nobuaki Fuji
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2012-12-05
• [Presentation] 実体波を用いた3次元波形インバージョン法の開発および中米下最下部マントルの3次元詳細構造 (2012)
  • Author(s): 河合研志,小西健介,ゲラー・ロバート,冨士延章
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 函館市民会館・函館市民体育館,函館
  • Year and Date: 2012-10-18
• [Presentation] 地震波形分析から示唆される中央太平洋下マントル最下部における超低速度領域の存在 (2012)
  • Author(s): 長谷川慶,河合研志,ゲラー・ロバート,小西健介,冨士延章
  • Organizer: 日本地球惑星科学連合大会,幕張メッセ
  • Place of Presentation: 千葉
  • Year and Date: 2012-05-20
• [Presentation] Methods for inversion of body-wave waveforms for localized three-dimensional seismic structure and an application to D" structure beneath Central America (2012)
  • Author(s): 河合研志
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
• [Presentation] The vertical flow and lateral heterogeneity in the lowermost mantle (2011)
  • Author(s): Kenji Kawai, Robert J.Geller, Nobuaki Fuji, Kensuke Konishi
  • Organizer: American Geophysical Union Fall meeting
  • Place of Presentation: San Francisco USA
  • Year and Date: 2011-12-09
• [Presentation] Efficient calculation of complete 3D Frechet derivatives for high frequency compressional teleseismic body waves (2011)
  • Author(s): Nobuaki Fuji, Sebastien Chevrot, Li Zhao, Robert J.Geller, Kenji Kawai
  • Organizer: American Geophysical Union
  • Place of Presentation: San Francisco USA
  • Year and Date: 2011-12-08
• [Presentation] Efficient calculation of complete 3D rech t d r v t v s f r h gh frequency compressional teleseismic body waves (2011)
  • Author(s): bastien Chevrot, Li Zhao, Robert J. Geller, Kenji Kawai
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2011-12-06
• [Presentation] The vertical flow and lateral heterogeneity in the lowermost mantle (2011)
  • Author(s): Kenji Kawai, Robert J. Geller, Nobuaki FujiKensuke Konishi
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2011-12-06
• [Presentation] PKP Kernel Calculation up to 1Hz using DSM Method (2011)
  • Author(s): Nobuaki Fuji, Sebastien Chevrot, Li Zhao, Robert J.Geller, Kenji Kawai
  • Organizer: AOGS meeting 2011
  • Place of Presentation: Taipei, Taiwan(招待講演)
  • Year and Date: 2011-08-11
• [Presentation] A hybrid technique for 3-D modeling of high frequency teleseismic body waves in the Earth (2011)
  • Author(s): Fuji, N., et al.
  • Organizer: AOGS meeting 2011
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2011-08-11
• [Presentation] The vertical flow in the lowermost mantle beneath the Pacific (2011)
  • Author(s): Kenji Kawai, Robert J.Geller
  • Organizer: AOGS 2011
  • Place of Presentation: Taipei Taiwan(招待講演)
  • Year and Date: 2011-08-11
• [Presentation] Waveform inversion of broadband body wave data for the S-velocity structure in the lowermost mantle beneath India (2011)
  • Author(s): Kensuke Konishi Kenji Kawai, Robert J.Geller, Nobuaki Fuji
  • Organizer: AOGS meeting 2011
  • Place of Presentation: Taiwan Taipei
  • Year and Date: 2011-08-11
• [Presentation] PKP Kernel Calculation up to 1Hz using DSM Method (2011)
  • Author(s): bastien Chevrot, Li Zhao, Robert J. Geller, Kenji Kawai
  • Organizer: AOGS 2011, Taipei
  • Place of Presentation: Taiwan
  • Year and Date: 2011-08-09
• [Presentation] The vertical flow in the lowermost mantle beneath the Pacific (2011)
  • Author(s): Kenji Kawai, Robert J. Geller
  • Organizer: AOGS 2011
  • Place of Presentation: TaipeiTaiwan
  • Year and Date: 2011-08-09
• [Presentation] Waveform inversion of broadband body wave data for the S-velocity structure in the lowermost mantle beneath India (2011)
  • Author(s): 小西健介、河合研志、ロバート・ゲラー、冨士延章
  • Organizer: JPGU 2011
  • Place of Presentation: 幕張メッセ(千葉)
  • Year and Date: 2011-05-23
• [Presentation] 広帯域波形を用いた波形インバージョンによるインド下最下部マントル構造 (2011)
  • Author(s): 小西健介,河合研志,ゲラー・ロバート,冨士延章
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2011-05-22
• [Presentation] 波形インバージョンによる南太平洋下の最下部マントルS波速度構造推定 (2011)
  • Author(s): 長谷川慶,小西健介,ゲラー・ロバート,冨士延章,河合研志
  • Organizer: 日本地球惑星科学連合大会,幕張メッセ
  • Place of Presentation: 千葉
  • Year and Date: 2011-05-22
• [Presentation] The large low velocity province and the vertical flow beneath the Pacific. (2010)
  • Author(s): Kenji Kawai, Robert J. Geller, Taku Tsuchiya
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-16
• [Presentation] 太平洋下最下部マントルにおける上昇流の地震学的証拠 (2010)
  • Author(s): 河合研志,ゲラー・ロバート
  • Organizer: 地震学会秋季大会
  • Place of Presentation: 広島国際会議場,広島
  • Year and Date: 2010-10-28
• [Presentation] 震源MTを考慮したより短周期までの地震波形インバージョン-インド下最下部マントル構造- (2010)
  • Author(s): 小西健介,河合研志,ゲラー・ロバート,冨士延章
  • Organizer: 地震学会秋季大会
  • Place of Presentation: 広島国際会議場,広島
  • Year and Date: 2010-10-28
• [Presentation] 効率的な3次元波形インバージョン手法の開発 (2010)
  • Author(s): 冨士延章,シュヴロー・セバスシャン,ゲラー・ロバート,河合研志,趙里
  • Organizer: 地震学会秋季大会
  • Place of Presentation: 広島国際会議場,広島
  • Year and Date: 2010-10-28
• [Presentation] Low Q in the mantle transition zone beneath the Northwestern Pacific? (2010)
  • Author(s): Nobuaki Fuji, Robert J. Geller, Kenji Kawai, Kensuke Konishi
  • Organizer: 2010 Western Pacific Geophysics Meeting
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2010-06-23
• [Presentation] Showing the waveform sensitivity against model-changing and applying CG method for obtaining Shear wave velocitystructure in the lowermost mantle beneath Central Asia (2010)
  • Author(s): Kensuke Konishi, Kawai Kenji, Nobuaki Fuji, Robert J. Geller
  • Organizer: 2010 Western Pacific Geophysics Meeting
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2010-06-23
• [Presentation] 地震波速度モデルに対する波形の感度とCG法を用いた波形インバージョンによるインド下最下部マントル速度構造 (2010)
  • Author(s): 小西健介,河合研志,ゲラー・ロバート,冨士延章
  • Organizer: 日本地球惑星科学連合大会
  • Place of Presentation: 幕張メッセ,千葉
  • Year and Date: 2010-05-24
• [Presentation] Waveform inversion for Earth structure: Progress and Prospects
  • Author(s): Robert J. Geller
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: San Francisco, USA
  • Invited
• [Presentation] Toward inversion of body-wave waveforms for localized three-dimensional seismic structure
  • Author(s): Kenji Kawai
  • Organizer: Geodynamics Seminar
  • Place of Presentation: San Diego USA
  • Invited
• [Presentation] 波形インバージョンによる詳細な地球内部構造推定およびその地球物理学的解釈
  • Author(s): 河合研志
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 北海道函館、函館市民会館
  • Invited
• [Presentation] 実体波を用いた３次元波形インバージョン法の開発および中米下最下部マントルの３次元詳細構造
  • Author(s): 河合研志
  • Organizer: 日本地震学会秋季大会
  • Place of Presentation: 北海道函館、函館市民会館