A quick cooling event of the East Asian monsoon responding to Heinrich Event 1: Evidence from stalagmite delta O-18 records

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 tempera...

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Bibliographic Details
Published in:Science in China Series D
Main Authors: Wang, YJ, Wu, JY, Liu, DB, Wu, JQ, Cai, YJ, Cheng, H
Format: Article in Journal/Newspaper
Language:English
Published: SCIENCE CHINA PRESS 2002
Subjects:
H1 event
internal oscillations
cave stalagmite
oxygen isotope
Nanjing
Geology
NORTH-ATLANTIC OCEAN
LAST DEGLACIATION
OXYGEN-ISOTOPE
ICEBERG DISCHARGES
ICE SHEETS
CLIMATE
CAVE
GLACIATION
SPELEOTHEMS
INSTABILITY
Geosciences
Multidisciplinary
Hulu
Pacific
North Atlantic
Online Access:http://ir.ieecas.cn/handle/361006/12042
https://doi.org/10.1360/02yd9010
Description
Summary: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 7-8degreesC in air temperature within 36 years. Furthermore, delta(18)O 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 delta(8)O 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.

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