A quick cooling event of the East Asian monsoon responding to Heinrich event 1: Evidence from stalagmite δ18O records

Yongjin Wang, Jiangying Wu, Dianbing Liu, Jinquan Wu, Yanjun Cai, Hai Cheng

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Based on TIMS U-series dating results and annual band counting method, an annual-resolution time scale from 17450 to 14420 aBP has been established for a stalagmite from the Hulu Cave at Tangshan, Nanjing. A high-resolution oxygen isotopic record reveals decadral-centural oscillations in air temperature in the East Asian monsoon climate area during the last glacial maximum. The most conspicuous feature in the oxygen isotopic record in the period is the particular cold event synchronized with the last Heinrich event (H1) in the northern Atlantic deep-sea records. This particular cold event, beginning at 16140 ± 100 aBP, shows a rapid cooling down with a magnitude of 7-8°C in air temperature within 36 years. Furthermore, δ18O record demonstrates that the event lasted 790 years with gradually warming tendency (10 cycles of air temperature oscillations) after the remarkable cooling down. We believed that this unique pattern of event recorded in the stalagmite δ8O might be controlled by various factors including changes of insolation at mid-latitude Northern Hemisphere, the southern extend of the last ice-rafted event in the North Atlantic and changes of the Equatorial Pacific sea surface temperature.

Original languageEnglish (US)
Pages (from-to)88-96
Number of pages9
JournalScience in China, Series D: Earth Sciences
Volume45
Issue number1
DOIs
StatePublished - Jan 2002

Keywords

  • Cave stalagmite
  • H1 event
  • Internal oscillations
  • Nanjing
  • Oxygen isotope

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