Evidence for the 8,200 a B.P. cooling event in the middle Okinawa Trough

Hua Yu*, Yingqian Xiong, Zhenxia Liu, Serge Berné, Chi Yue Huang, Guodong Jia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Based on new and existing data on oxygen isotopes, alkenone-surface seawater temperature trends, planktonic foraminifers, lithology, and clay mineral composition of piston cores, a distinct cooling event has been identified around 8,200 cal a B.P. in the middle Okinawa Trough, northwest Pacific. This corresponds to the 8,200 a B.P. cooling event recorded in many places of the Northern Hemisphere. During this event, the local temperature decreased by 1°C and the δ18O value increased by 0.6‰. A strengthened Asian winter monsoon is the most probable cause for this event, which thus adds further credibility to the contention that we are dealing here with a global phenomenon.

Original languageEnglish (US)
Pages (from-to)131-136
Number of pages6
JournalGeo-Marine Letters
Issue number3
StatePublished - Jun 2008
Externally publishedYes

ASJC Scopus subject areas

  • Oceanography
  • Environmental Science (miscellaneous)
  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)


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