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2017 Fiscal Year Annual Research Report

Himalayan uplift impacts on methane flares

Research Project

Project/Area Number 15F15029
Research InstitutionThe University of Tokyo

Principal Investigator

川幡 穂高  東京大学, 大気海洋研究所, 教授 (20356851)

Co-Investigator(Kenkyū-buntansha) HOSSAIN H.M.Zakir  東京大学, 大気海洋研究所, 外国人特別研究員
Project Period (FY) 2015-10-09 – 2018-03-31
Keywordsorganic carbon / organic matter / total nitrogen / organic matter / shrubs / woody plants / herbaceous plants
Outline of Annual Research Achievements

Sediments from the Bay of Bengal were measured for elemental, n-alkanes, and stable carbon (δ13C) and nitrogen (δ15Ntot) isotopic compositions to examine the gas hydrate reservoir systems in the oceanic region. The TOC, C/N ratio and isotopic compositions of the studied sediments suggest a mixture of marine and terrestrial derived organic matter. The negative δ13C values also indicate gas hydrate deposits of microbial methane dominant. Sediment accumulation rate and TOC are likely controlled by high crustal materials input in response to uplift of the Himalaya.

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

  • Research Products

    (3 results)

All 2017

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Geochemical characteristics of modern river sediments in Myanmar and Thailand: Implications for provenance and weathering2017

    • Author(s)
      Hossain H.M. Zakir、Kawahata Hodaka、Roser Barry P.、Sampei Yoshikazu、Manaka Takuya、Otani Souya
    • Journal Title

      Chemie der Erde - Geochemistry

      Volume: 77 Pages: 443~458

    • DOI

      DOI: 10.1016/j.chemer.2017.07.005

    • Peer Reviewed
  • [Journal Article] Downstream and seasonal changes of lithium isotope ratios in the Ganges-Brahmaputra river system2017

    • Author(s)
      Manaka Takuya、Araoka Daisuke、Yoshimura Toshihiro、Hossain H. M. Zakir、Nishio Yoshiro、Suzuki Atsushi、Kawahata Hodaka
    • Journal Title

      Geochemistry, Geophysics, Geosystems

      Volume: 18 Pages: 3003~3015

    • DOI

      10.1002/2016GC006738

  • [Presentation] Geochemical implications of provenance and chemical weathering in the major river sediments of Myanmar and Thailand2017

    • Author(s)
      Hossain H. M.、川幡 穂高、Roser Barry、三瓶 良和、眞中 卓也、大谷 壮矢
    • Organizer
      日本地球惑星科学連合大会
    • Int'l Joint Research

URL: 

Published: 2018-12-17  

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