• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Paleoclimate reconstruction by oxygen isotope analysis of sedimentary cellulose

Research Project

Project/Area Number 25610146
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Geology
Research InstitutionHokkaido University

Principal Investigator

YAMAMOTO Masanobu  北海道大学, 地球環境科学研究科(研究院), 准教授 (60332475)

Co-Investigator(Kenkyū-buntansha) SEKI Osamu  北海道大学, 低温科学研究所, 准教授 (30374648)
Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsセルロース / 酸素同位体 / 降水 / 泥炭 / 気候変動 / 完新世
Outline of Final Research Achievements

We established the method of oxygen isotope analysis for cellulose in plant remains in peats. We isolated different plant remains in each sample, degrade lignin, and measured oxygen isotopes of extracted cellulose. The oxygen isotopic ratio of Sphagnum cellulose shifts lighter from 3000 to 2000 years ago, suggesting changes in rain oxygen isotopes. The difference between Sphagnum and plan remains were maximum at 2000 years ago, suggesting minimum in relative humidity. These results are consistent with environmental changes reconstructed from pollen assemblages.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (1 results)

All 2015

All Journal Article (1 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] Climate reconstruction based on GDGT-based proxies in a paleosol sequence in Japan: Postdepositional effect on the estimation of air temperature.2015

    • Author(s)
      Yamamoto, Y., Ajioka, T., Yamamoto, M.
    • Journal Title

      Quaternary International

      Volume: not decided Pages: 380-391

    • DOI

      10.1016/j.quaint.2014.12.009

    • NAID

      120006410529

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi