Synchronous Td'-derived SSTs (.DEG.C.) off Japan with Climatic Events in the Northern Hemisphere

• KOIZUMI Itaru

  Emeritus Professor of Hokkaido University

• SAKAMOTO Tatsuhiko

  Japan Agency for Marine-Earth Science and Technology

Bibliographic Information

Other Title

• 日本近海の海水温変動と北半球気候変動との共時性
• ニホン キンカイ ノ カイスイオン ヘンドウ ト キタハンキュウ キコウ ヘンドウ ト ノ キョウジセイ

Abstract

 Annual sea-surface temperatures (SSTs) (°C) were derived from a regression analysis between the ratio of warm- and cold-water diatoms (Td' ratio) in 123 surface sediment samples around the Japanese Islands and measured mean annual SSTs (°C) at the core sites. The cross spectra between the atmospheric residual ¹⁴C (‰), and annual SSTs (°C) of cores DGC-6 (Japan Sea) and MD01-2421 (off Kashima), respectively, consist of five dominant periods: 6000, 2400, 1600, 950, and 700 years.<br> The amplitude of fluctuations of annual SSTs (°C) in the millennial time scale during the Holocene after the Younger Dryas is within 6-10°C. Periodic variations of annual SSTs (°C) can be correlated within error to abrupt climatic events reported from different paleoclimatic proxy records in many regions of the Northern Hemisphere. The cooling time of annual SSTs (°C) also corresponds to the triple events of high ¹⁴C values in the atmospheric residual ¹⁴C records, as well as the Bond events in the North Atlantic.

Journal

• Journal of Geography (Chigaku Zasshi)

  Journal of Geography (Chigaku Zasshi) 119 (3), 489-509, 2010

  Tokyo Geographical Society

Keywords

• sea-surface temperatures
• solar activity
• Holocene
• climatic variations
• proxy

Details

• CRID: 1390282679205750912
• NII Article ID: 10030369415
• NII Book ID: AN00322536
• DOI: 10.5026/jgeography.119.489
• ISSN: 18840884
• ISSN: 0022135X
• NDL BIB ID: 10757682
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10757682
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed