Relation between Earth surface phenomena and deep mantle structure inferred from a hybrid P-wave tomography

• Project/Area Number: 25287116
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: OBAYASHI Masayuki 国立研究開発法人海洋研究開発機構, 地球深部ダイナミクス研究分野, 主任研究員 (30359179)
• Co-Investigator(Renkei-kenkyūsha): YOSHIMITSU Junko 国立研究開発法人海洋研究開発機構, 地球深部ダイナミクス研究分野, 技術副主任 (70392941)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000); Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2013: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
• Keywords: 地震波トモグラフィー / 火山現象 / テクトニクス / 地球内部構造 / 沈み込むスラブ / マントルプルーム / ホットスポット / トモグラフィー / 深発地震 / シャツキー海台 / スラブ / 内部構造

Outline of Final Research Achievements

We developed a P-wave mantle tomography, using ray theory for onset times and finite frequency kernels for broadband waveform data. We applied this new method to investigate mantle structures in Northeastern Asia and French Polynesia and succeeded to obtain detail structures.
The tomography image shows slow anomalies below the Cenozoic volcanoes around the Songliao basin. In the mantle transition zone, no extended flatten slab is observed beneath the basin while it is observed to the north and south. It looks like a hole of the stagnant slab. The hole of the stagnant slab may be related with the volcanism of Changbaishan. Below the French Polynesia, the image shows that a strong large-scale (~1000 km in diameter) slow anomalies from the core-mantle boundary do not extend straight to the surface but become small and weak in the depth range about 550 - 900 km. The small-scale slow anomalies seem to shape a circle connecting the Society, Marquesas, Pitcairn and MacDonald hotspots.

Research Products

• [Journal Article] CSMAP: Cross Section Selector and Tomogram Generator (2016)
  • Author(s): Taewoon Kim, Yoshio Fukao, Masayuki Obayashi
  • Journal Title: JAMSTEC Report of Research and Development Volume: 22 Issue: 0 Pages: 31-38
  • DOI: 10.5918/jamstecr.22.31
  • NAID: 130005142490
  • ISSN: 1880-1153, 2186-358X
  • Peer Reviewed / Open Access
• [Journal Article] Rapid lateral variation of P-wave velocity at the base of the mantle near the edge of the Large-Low Shear Velocity Province beneath the western Pacific (2015)
  • Author(s): Tanaka S., Kawakatsu H., Obayashi M., Chen Y.J., Ning J., Grand S.P., Niu F., Ni J.
  • Journal Title: Geophys. J. Int. Volume: 200 Issue: 2 Pages: 1052-1065
  • DOI: 10.1093/gji/ggu455
  • Peer Reviewed
• [Journal Article] Changbaishan volcanism in northeast China linked to subduction-induced mantle upwelling (2014)
  • Author(s): Youcai Tang, Masayuki Obayashi, Fenglin Niu, Stephen P. Grand, Yongshun John Chen, Hitoshi Kawakatsu, Satoru Tanaka, Jieyuan Ning & James F. Ni
  • Journal Title: Nature Geoscience Volume: 7 Pages: 470-475
  • Peer Reviewed
• [Journal Article] Crustral structure beneath NE China imagaed by NECESSArray receiver function data (2014)
  • Author(s): Tao K., Niu. F., Ning J., Chen Y.J., Grand S.P. , Kawakatsu H. , Tanaka S., Obayashi M., Ni J.
  • Journal Title: Earth and Planetary Science Letters Volume: 398 Pages: 48-57
  • DOI: 10.1016/j.epsl.2014.04.043
  • Peer Reviewed
• [Journal Article] Upper Mantle Tomography in the Northwestern Pacific Region Using Triplicated P Waves (2014)
  • Author(s): Takeuchi, N., H. Kawakatsu, S. Tanaka, M. Obayashi, Y. J. Chen., J. Ning, S. P. Grand, F. Niu, J. F Ni, R. Iritani, K. Idehara, T. Toneg
  • Journal Title: Journal of Geophysical Research Volume: 119 Issue: 10 Pages: 7667-7685
  • DOI: 10.1002/2014jb011161
  • Peer Reviewed
• [Journal Article] High resolution 3-D crustal structure beneath NE China from joint inversion of ambient noise and receiver functions using NECESSArray data (2014)
  • Author(s): Guo Z., Y. J. Chen, J. Ninga, Y. Feng, S. P. Grand, F. Niu, H. Kawakatsu, S. Tanaka, M. Obayashi, J. Ni
  • Journal Title: Earth and Planetary Science Letters Volume: 426 Pages: 1-11
  • DOI: 10.1016/j.epsl.2015.01.044
  • Peer Reviewed
• [Journal Article] Receiver function images of the mantle transition zone beneath NE China: New constraints on intraplate volcanism, deep subduction and their potential link (2014)
  • Author(s): Liu Z., F. Niu, Y. J. Chen, S. Grand, H. Kawakatsu, J. Ning, S. Tanaka, M. Obayashi, J. Ni
  • Journal Title: Earth and Planetary Science Letters Volume: 412 Pages: 101-111
  • DOI: 10.1016/j.epsl.2014.12.019
  • Peer Reviewed
• [Journal Article] Subduction Zone Structure in the Mantle Transition Zone (2014)
  • Author(s): Yoshio Fukao and Masayuki Obayashi
  • Journal Title: Treatise on Geophysics, second edition Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Finite frequency whole mantle P wave tomography : Improvement of subducted slab images (2013)
  • Author(s): Obayashi, M., J. Yoshimitsu, G. Nolet
  • Journal Title: Geophys. Res. Lett. Volume: 40 Issue: 21 Pages: 5652-5657
  • DOI: 10.1002/2013gl057401
  • Peer Reviewed
• [Journal Article] Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity (2013)
  • Author(s): Fukao Y. and M. Obayashi
  • Journal Title: J. Geophys. Res. Solid Earth Volume: 118 Issue: 11 Pages: 5920-5938
  • DOI: 10.1002/2013jb010466
  • Peer Reviewed
• [Presentation] Unusually Deep Bonin Earthquake (M7.9) of May 30, 2015 Suggests that Stagnant Slab Transforms into Penetration Stage (2015)
  • Author(s): Masayuki Obayashi, Yoshio Fukao, Junko Yoshimitsu
  • Organizer: American Geophysical Union Fall Meeting 2015
  • Place of Presentation: San Francisco Moscorne Center（米国、サンフランシスコ）
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] 2015 年 5 月 30 日小笠原深発地震と沈み込むスラブ (2015)
  • Author(s): 大林政行
  • Organizer: 日本地震学会 ２０１５年秋季大会
  • Place of Presentation: 神戸国際会議場（兵庫県神戸市）
  • Year and Date: 2015-10-26
  • Invited
• [Presentation] tagnant Honshu slab and its implication for Japan Sea Opening and off-arc volcanism (2015)
  • Author(s): Masayuki Obayashi, H. Kawakatsu, S. Tanaka, F. Niu, Y. Chen, J. Ning, S. Grand, J. Ni, J. Yoshimitsu
  • Organizer: International Union of Geodesy and Geophysics 2015 General Assembly
  • Place of Presentation: Prague Congress Center（チェコ共和国、プラハ）
  • Year and Date: 2015-06-22
  • Int'l Joint Research
• [Presentation] P-wave velocity anomalies of the plume beneath the French Polynesia (2015)
  • Author(s): Masayuki Obayashi, Junko Yoshimitsu, Hiroko Sugioka, Aki Ito, Takehi Isse, Hajime Shiobara, Daisuke Suetsugu
  • Organizer: 日本地球惑星科学連合 2015年大会
  • Place of Presentation: 幕張メッセ（千葉県千葉市）
  • Year and Date: 2015-05-24
• [Presentation] P-wave velocity anomalies of the plume beneath the French Polynesia (2015)
  • Author(s): Masayuki Obayashi, Junko Yoshimitsu, Hiroko Sugioka, Aki Ito, Takehi Isse, Hajime Shiobara, Daisuke Suetsugu
  • Organizer: European Geoscience Union General Assembly 2015
  • Place of Presentation: Austria Center Vienna（オーストリア、ウィーン）
  • Year and Date: 2015-04-12
  • Int'l Joint Research
• [Presentation] Finite Frequency P-Wave Tomography for French Polynesian Region (2014)
  • Author(s): Obayashi M., J. Yoshimitsu, H. Sugioka, A. Ito, T. Isse, H. Shiobara, D. Suetsugu
  • Organizer: American Geophysical Union fall meeting 2014
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2014-12-16
• [Presentation] Adjoint Tomography Imaging of Three-dimensional Seismic Velocity Structure in East Asia (2014)
  • Author(s): Miyoshi T., M. Obayashi, Y. Tono, S. Tsuboi
  • Organizer: Asia Oceania Geosciences Society 2014
  • Place of Presentation: ロイトン札幌、北海道札幌市
  • Year and Date: 2014-08-01
• [Presentation] Determination of Earth Structure Using Waveform Inversion and Spectral-element Method (2014)
  • Author(s): Tsuboi S., Miyoshi T., M. Obayashi, Y. Tono
  • Organizer: Asia Oceania Geosciences Society 2014
  • Place of Presentation: ロイトン札幌、北海道札幌市
  • Year and Date: 2014-08-01
• [Presentation] Measurement of differential P-wave travel time between two BBOBSs with correction for crustal reverberation (2014)
  • Author(s): 大林 政行, 吉光 淳子, 石原 靖, 末次 大輔
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜、神奈川県横浜市
  • Year and Date: 2014-05-02
• [Presentation] Absence of stagnant slab: implication for volcanism, back-arc opening and trench migration
  • Author(s): Obayashi M., F. NIu, J. Yoshimitsu, H. Kawakatsu, S. Tanaka, Y.J. Chen, J. Ning, S.P. Grand, N. Takeuchi, K. Miyakawa, K. Idehara, T. Tonegawa, R. Iritani
  • Organizer: Japan Geoscience Union Meeting 2013
  • Place of Presentation: 幕張メッセ（千葉県）
  • Invited
• [Presentation] A hole of stagnant slab: Implication for volcanism, back-arc opening and trench migration
  • Author(s): Obayashi, M., Niu, F., Yoshimitsu, J., Kawakatsu, H., Tanaka, S., Chen, Y.J., Ning, J., Grand, S.P.
  • Organizer: IAHS-IASPSO-IASPEI
  • Place of Presentation: Gothenburg Convention Centre, Gothenburg, Sweden
• [Presentation] 海洋多重反射波の補正法（広帯域海底地震計間P波相対走時測定のための）
  • Author(s): 大林政行、石原靖、末次大輔
  • Organizer: 日本地震学会2013年度秋季大会
  • Place of Presentation: 神奈川県民ホール（神奈川県）