論文

査読有り 筆頭著者 責任著者
2016年3月

Controlling factors in stalagmite oxygen isotopic composition and the paleoprecipitation record for the last 1,100 years in Northeast Japan

GEOCHEMICAL JOURNAL
  • Hirokazu Kato
  • ,
  • Tsutomu Yamada

50
6
開始ページ
E1
終了ページ
E6
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.2343/geochemj.2.0417
出版者・発行元
GEOCHEMICAL SOC JAPAN

Stable oxygen isotopic analysis was performed on the UT-A stalagmite with annual microbanding from the Uchimagido Cave in Iwate Prefecture on the Pacific side of Northeast Japan. High-resolution analysis of the uppermost portion of UT-A revealed a positive correlation between the stalagmite delta O-18 value and R ((summer precipitation-winter precipitation)/annual precipitation) over the last several decades. This correlation is the result of the distinct seasonal shift in precipitation delta O-18. During the summer, rainfall with higher delta O-18 values arrives from the humid atmosphere over the Pacific Ocean. In the winter, comparatively little snowfall/rainfall, with lower delta O-18 values, arrives from the Japan Sea and is brought by Nangan cyclones (low-pressure systems that pass along the southern coast of Japan). In years with humid summers, large amounts of rainfall from the Pacific Ocean raise the delta O-18 values of the cave dripwater and stalagmites. Changes in precipitation over the last 1,100 years, reconstructed from the delta O-18 profile of the UT-A stalagmite, coincide with the historical records of famines and disasters triggered by rainfall excesses and shortages.

リンク情報
DOI
https://doi.org/10.2343/geochemj.2.0417
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000392504000001&DestApp=WOS_CPL
ID情報
  • DOI : 10.2343/geochemj.2.0417
  • ISSN : 0016-7002
  • eISSN : 1880-5973
  • Web of Science ID : WOS:000392504000001

エクスポート
BibTeX RIS