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Pacific Array

Research Project

Project/Area Number 15K13558
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

Kawakatsu Hitoshi  東京大学, 地震研究所, 教授 (60242153)

Co-Investigator(Renkei-kenkyūsha) SHIOBARA Hajime  東京大学, 地震研究所, 教授 (60211950)
ISSE Takehi  東京大学, 地震研究所, 助教 (60359180)
NISHIDA Kiwamu  東京大学, 地震研究所, 准教授 (10345176)
UTADA Hisashi  東京大学, 地震研究所, 教授 (70134632)
SUETSUGU Daisuke  独立行政法人海洋研究開発機構, 地球深部ダイナミクス研究分野, 分野長 (20359178)
SUGIOKA Hiroko  神戸大学, 理学系研究科, 准教授 (00359184)
YOSHIZAWA Kazunori  北海道大学, 理学系研究科, 准教授 (70344463)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords海底地震計 / 広帯域地震計 / 地球内部構造 / トモグラフィー / 海底電磁気計
Outline of Final Research Achievements

We have proposed a next generation large-scale array experiment in the ocean called Pacific Array. Recent advances in ocean bottom broadband seismometry, together with advances in the seismic analysis methodology, have enabled us to resolve the regional 1-D structure of the entire lithosphere/asthenosphere system, including seismic anisotropy, with deployments of ~15 broadband ocean bottom seismometers. Having ~15 BBOBSs as an array unit for a ~1-year deployment, and repeating such deployments in a leap-frog way or concurrently (an array of arrays) for a decade or so would enable us to cover a large portion of the Pacific basin. With this JSPS support, we took a leadership to organize international collaborations; as a result, three array deployments are funded so far in various countries (US, Japan, and Korea).

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (31 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (2 results) Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 2 results,  Acknowledgement Compliant: 5 results) Presentation (12 results) (of which Int'l Joint Research: 10 results,  Invited: 5 results) Remarks (6 results) Funded Workshop (1 results)

  • [Int'l Joint Research] コロンビア大学(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] ソウル大学(韓国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] A new fifth parameter for transverse isotropy III: reflection and transmission coefficients2018

    • Author(s)
      Kawakatsu Hitoshi
    • Journal Title

      Geophysical Journal International

      Volume: 213 Issue: 1 Pages: 426-433

    • DOI

      10.1093/gji/ggy003

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Seismic and Electrical Signatures of the Lithosphere?Asthenosphere System of the Normal Oceanic Mantle2017

    • Author(s)
      Kawakatsu Hitoshi、Utada Hisashi
    • Journal Title

      Annual Review of Earth and Planetary Sciences

      Volume: 45 Issue: 1 Pages: 139-167

    • DOI

      10.1146/annurev-earth-063016-020319

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] A fluid-rich layer along the Nankai trough megathrust fault off the Kii Peninsula inferred from receiver function inversion2017

    • Author(s)
      Akuhara Takeshi、Mochizuki Kimihiro、Kawakatsu Hitoshi、Takeuchi Nozomu
    • Journal Title

      J. Geophys. Res. Solid Earth

      Volume: 122 Issue: 8 Pages: 6524-6537

    • DOI

      10.1002/2017jb013965

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Determination of intrinsic attenuation in the oceanic lithosphere-asthenosphere system2017

    • Author(s)
      Takeuchi Nozomu、Kawakatsu Hitoshi、Shiobara Hajime、Isse Takehi、Sugioka Hiroko、Ito Aki、Utada Hisashi
    • Journal Title

      Science

      Volume: 358 Issue: 6370 Pages: 1593-1596

    • DOI

      10.1126/science.aao3508

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A new fifth parameter for transverse isotropy II: partial derivatives2016

    • Author(s)
      Kawakatsu, H.
    • Journal Title

      Geophys. Jour. Inter.

      Volume: 206 Issue: 1 Pages: 360-367

    • DOI

      10.1093/gji/ggw152

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Nonlinear waveform analysis for water-layer response and its application to high-frequency receiver function analysis using OBS array2016

    • Author(s)
      Akuhara, T., K. Mochizuki, H. Kawakatsu, and N. Takeuchi
    • Journal Title

      Geophys. Jour. Inter.

      Volume: 206 Issue: 3 Pages: 1914-1920

    • DOI

      10.1093/gji/ggw253

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Comment on "Nature of the Seismic Lithosphere-Asthenosphere Boundary within Normal Oceanic Mantle from High-Resolution Receiver Functions" by Olugboji et al.2016

    • Author(s)
      Kawakatsu, H. and Y. Abe
    • Journal Title

      Geochemistry, Geophysics, Geosystems

      Volume: 17 Issue: 8 Pages: 3488-3492

    • DOI

      10.1002/2016gc006418

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] A new fifth parameter for transverse isotropy2016

    • Author(s)
      Kawakatsu, H.
    • Journal Title

      Geophysical Journal International

      Volume: 204 Issue: 1 Pages: 682-685

    • DOI

      10.1093/gji/ggv479

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Intensity of seismic azimuthal anisotropy in the oceanic lithosphere and as- thenosphere from broadband surface-wave analysis of OBS array records at 60 Ma seafloor2016

    • Author(s)
      Takeo, A., H. Kawakatsu, T. Isse, K. Nishida, H. Sugioka, A. Ito, H. Shiobara, D. Suetsugu
    • Journal Title

      J. Geophys. Res.: Solid Earth

      Volume: 121 Issue: 3 Pages: 1-21

    • DOI

      10.1002/2015jb012429

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] On DLA's η2015

    • Author(s)
      Kawakatsu, H., J.-P. Montagner and T.-R. A. Song
    • Journal Title

      GSA Special Paper 514: The Interdisciplinary Earth: A Volume in Honor of Don L. Anderson

      Volume: 1 Pages: 33-38

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Elucidation of the oceanic lithosphere-asthenosphere system via Pacific Array2017

    • Author(s)
      Hitoshi Kawakatsu
    • Organizer
      Collaborative research in global ocean and subduction -toward Pacific Array-
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Beno Gutenberg Medal Lecture: "A journey to the seismic low velocity zone beneath the ocean"2017

    • Author(s)
      Hitoshi Kawakatsu
    • Organizer
      European Geosciences Union General Assembly 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Radial anisotropy as "bodywave-surface wave discrepancy"2017

    • Author(s)
      Hitoshi Kawakatsu
    • Organizer
      JpGU-AGU joint meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pacific Array 2017 -plans, proposals & perspectives-2017

    • Author(s)
      H. Kawakatsu, J. Gaherty, S-M. Lee, P. P. Lin and H. Utada
    • Organizer
      IRIS 2017 OBS Symposium
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pacific Array of, by and for Global Deep Earth Research2016

    • Author(s)
      Kawakatsu, H.
    • Organizer
      American Geophysical Union
    • Place of Presentation
      San Fraicisco, USA
    • Year and Date
      2016-12-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Toward proper characterization of seismic radial anisotropy of the lithosphere-asthenosphere system2016

    • Author(s)
      Kawakatsu, H.
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ(千葉市美浜区中瀬)
    • Year and Date
      2016-05-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Elucidation of the lithosphere/asthenosphere system of “normal” oceanic mantle via broadband ocean bottom seismology2016

    • Author(s)
      Kawakatsu, H.
    • Organizer
      Seismix2016
    • Place of Presentation
      Avimore, Schotland, UK
    • Year and Date
      2016-05-15
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Pacific Array2016

    • Author(s)
      Kawakatsu, H.
    • Organizer
      European Geosciences Union General Assembly 2016
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      2016-04-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] A new fifth parameter for transverse isotropy2016

    • Author(s)
      Kawakatsu, H.
    • Organizer
      European Geosciences Union General Assembly 2016
    • Place of Presentation
      Vienna, Austria
    • Year and Date
      2016-04-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 海への地震学:深海底からプレートテクトニクスの謎に挑む2015

    • Author(s)
      川勝 均
    • Organizer
      地震学会 夏の学校
    • Place of Presentation
      JAMSTEC(神奈川県横浜市)
    • Year and Date
      2015-09-07
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Pacific Array2015

    • Author(s)
      Kawakatsu, H.
    • Organizer
      IUGG
    • Place of Presentation
      Prague, CZECH
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 太平洋アレイ2015

    • Author(s)
      Kawakatsu, H.
    • Organizer
      JpGU
    • Place of Presentation
      幕張メッセ(千葉県千葉市)
    • Year and Date
      2015-05-24
    • Related Report
      2015 Research-status Report
  • [Remarks]

    • URL

      http://eri-ndc.eri.u-tokyo.ac.jp/PacificArray/

    • Related Report
      2017 Annual Research Report
  • [Remarks]

    • URL

      http://eri-ndc.eri.u-tokyo.ac.jp/PacificArray/index_j.html

    • Related Report
      2017 Annual Research Report
  • [Remarks] Pacific Array

    • URL

      http://eri-ndc.eri.u-tokyo.ac.jp/PacificArray/

    • Related Report
      2016 Research-status Report
  • [Remarks] 太平洋アレイ

    • URL

      http://eri-ndc.eri.u-tokyo.ac.jp/PacificArray/index_j.html

    • Related Report
      2016 Research-status Report
  • [Remarks] Pacific Array(太平洋アレイ)

    • URL

      http://gachon.eri.u-tokyo.ac.jp/~hitosi/PArray/

    • Related Report
      2015 Research-status Report
  • [Remarks] Pacific Array

    • URL

      http://gachon.eri.u-tokyo.ac.jp/~hitosi/PArray/index_e.html

    • Related Report
      2015 Research-status Report
  • [Funded Workshop] post-JpGU workshop on Ocean Mantle Dynamics2017

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2022-06-07  

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