Electrical conductivity of old oceanic mantle in the northwestern Pacific I : 1-D profiles suggesting differences in thermal structure not predictable from a plate cooling model
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- Material Type
- 記事
- Author/Editor
- Kiyoshi BabaNoriko TadaTetsuo Matsuno
- Publication, Distribution, etc.
- Publication Date
- 2017-08-15
- Publication Date (W3CDTF)
- 2017-08-15
- Periodical title
- EPS : Earth, Planets and Space
- No. or year of volume/issue
- 69(111)
- Volume
- 69(111)
- ISSN (Periodical Title)
- 1880-5981
- ISSN-L (Periodical Title)
- 1343-8832
- Text Language Code
- eng
- DOI
- 10.1186/s40623-017-0697-0
- Persistent ID (NDL)
- info:ndljp/pid/10953839
- Collection
- Collection (Materials For Handicapped People:1)
- Collection (particular)
- 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他
- Acquisition Basis
- オンライン資料収集制度
- Date Accepted (W3CDTF)
- 2017-09-14T21:01:06+09:00
- Date Captured (W3CDTF)
- 2017-09-12
- Format (IMT)
- application/pdf
- Access Restrictions
- 国立国会図書館内限定公開
- Service for the Digitized Contents Transmission Service
- 図書館・個人送信対象外
- Availability of remote photoduplication service
- 可
- Periodical Title (URI)
- Periodical Title (Persistent ID (NDL))
- info:ndljp/pid/10319651
- Data Provider (Database)
- 国立国会図書館 : 国立国会図書館デジタルコレクション
- Summary, etc.
- Seafloor magnetotelluric (MT) experiments were recently conducted in two areas of the northwestern Pacific to investigate the nature of the old oceanic upper mantle. The areas are far from any tectonic activity, and "normal" mantle structure is therefore expected. The data were carefully analyzed to reduce the effects of coastlines and seafloor topographic changes, which are significant boundaries in electrical conductivity and thus distort seafloor MT data. An isotropic, one-dimensional electrical conductivity profile was estimated for each area. The profiles were compared with those obtained from two previous study areas in the northwestern Pacific. Between the four profiles, significant differences were observed in the thickness of the resistive layer beyond expectations based on cooling of homogeneous oceanic lithosphere over time. This surprising feature is now further clarified from what was suggested in a previous study. To explain the observed spatial variation, dynamic processes must be introduced, such as influence of the plume associated with the formation of the Shatsky Rise, or spatially non-uniform, small-scale convection in the asthenosphere. There is significant room of further investigation to determine a reasonable and comprehensive interpretation of the lithosphere-asthenosphere system beneath the northwestern Pacific. The present results demonstrate that electrical conductivity provides key information for such investigation.
- DOI
- 10.1186/s40623-017-0697-0
- Access Restrictions
- インターネット公開
- Rights (production)
- © The Author(s) 2017.This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Related Material
- MOESM3 of Electrical conductivity of old oceanic mantle in the northwestern Pacific I: 1-D profiles suggesting differences in thermal structure not predictable from a plate cooling model
- Related Material (URI)
- Is Referenced By
- A new miniaturized magnetometer system for long-term distributed observation on the seafloorProbing 1-D electrical anisotropy in the oceanic upper mantle from seafloor magnetotelluric array data2D resistivity model around the rupture area of the 2011 Tohoku-oki earthquake (Mw 9.0)A simple method to evaluate the uncertainty of magnetotelluric forward modeling for practical three-dimensional conductivity structure modelsAn efficient decoupled 3-D axial anisotropic resistivity inversion for magnetotelluric data with OpenMP parallelizationOcean bottom geophysical array studies may reveal the cause of seafloor flatteningSeismic Velocity Structure of Upper Mantle Beneath the Oldest Pacific Seafloor: Insights From Finite‐Frequency TomographyThe OJP array: seismological and electromagnetic observation on seafloor and islands in the Ontong Java PlateauValidity of the dispersion relations in magnetotellurics. Part II : synthetic and field data
- References
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- References (URI)
- Data Provider (Database)
- 国立情報学研究所 : CiNii Research
- Original Data Provider (Database)
- 学術機関リポジトリデータベース雑誌記事索引データベースCrossrefCiNii Articles科学研究費助成事業データベース科学研究費助成事業データベース科学研究費助成事業データベースCrossrefCrossrefCrossrefCrossrefCrossrefCrossrefCrossrefCrossrefCrossrefCrossrefCrossref
- Bibliographic ID (NDL)
- 10953839
- NAID
- 120006358589