High resolution stalagmite δ18O records over the past 1000 years from Dongge Cave in Guizhou

Yaoqi He; Yongjin Wang; Xinggong Kong; Hai Cheng

doi:10.1360/04wd0268

High resolution stalagmite δ¹⁸O records over the past 1000 years from Dongge Cave in Guizhou

Yaoqi He, Yongjin Wang, Xinggong Kong, Hai Cheng

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Based on MC-ICP-MS U-series dating and stable O-isotope analysis results, a 4-5 years resolution monsoon record over the past 1000 years has been established for two stalagmites from Dongge Cave, Guizhou. The high resolution oxygen isotope record serves as a proxy for variations in rainfall of Asian southwest monsoon over the Yunnan-Guizhou Plateau. A close relation of the δ¹⁸O record with the Δ¹⁴C record from tree rings largely reflects impact of centennial-scale solar activity on the monsoon climate changes. The conspicuous decrease in the δ¹⁸O value at AD 1720 indicates an abrupt increase in monsoon rainfall, suggesting that an atmospheric-oceanic couple over the tropical Indian Ocean plays an important role in rapid increase of the Northern Hemisphere temperature over the last century.

Original language	English (US)
Pages (from-to)	1003-1008
Number of pages	6
Journal	Chinese Science Bulletin
Volume	50
Issue number	10
DOIs	https://doi.org/10.1360/04wd0268
State	Published - 2005
Externally published	Yes

Bibliographical note

Funding Information:
Acknowledgements This work was supported by the National Outstanding Youth Foundation of China (Grant No. 40225007) and the 973 Project (Grant No. 2004CB20204).

Keywords

Cave stalagmite
Guizhou
Oxygen isotope
Solar activity
Southwest monsoon

Publisher link

10.1360/04wd0268

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title = "High resolution stalagmite δ18O records over the past 1000 years from Dongge Cave in Guizhou",

abstract = "Based on MC-ICP-MS U-series dating and stable O-isotope analysis results, a 4-5 years resolution monsoon record over the past 1000 years has been established for two stalagmites from Dongge Cave, Guizhou. The high resolution oxygen isotope record serves as a proxy for variations in rainfall of Asian southwest monsoon over the Yunnan-Guizhou Plateau. A close relation of the δ18O record with the Δ14C record from tree rings largely reflects impact of centennial-scale solar activity on the monsoon climate changes. The conspicuous decrease in the δ18O value at AD 1720 indicates an abrupt increase in monsoon rainfall, suggesting that an atmospheric-oceanic couple over the tropical Indian Ocean plays an important role in rapid increase of the Northern Hemisphere temperature over the last century.",

keywords = "Cave stalagmite, Guizhou, Oxygen isotope, Solar activity, Southwest monsoon",

author = "Yaoqi He and Yongjin Wang and Xinggong Kong and Hai Cheng",

note = "Funding Information: Acknowledgements This work was supported by the National Outstanding Youth Foundation of China (Grant No. 40225007) and the 973 Project (Grant No. 2004CB20204).",

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T1 - High resolution stalagmite δ18O records over the past 1000 years from Dongge Cave in Guizhou

AU - He, Yaoqi

AU - Wang, Yongjin

AU - Kong, Xinggong

AU - Cheng, Hai

N1 - Funding Information: Acknowledgements This work was supported by the National Outstanding Youth Foundation of China (Grant No. 40225007) and the 973 Project (Grant No. 2004CB20204).

PY - 2005

Y1 - 2005

N2 - Based on MC-ICP-MS U-series dating and stable O-isotope analysis results, a 4-5 years resolution monsoon record over the past 1000 years has been established for two stalagmites from Dongge Cave, Guizhou. The high resolution oxygen isotope record serves as a proxy for variations in rainfall of Asian southwest monsoon over the Yunnan-Guizhou Plateau. A close relation of the δ18O record with the Δ14C record from tree rings largely reflects impact of centennial-scale solar activity on the monsoon climate changes. The conspicuous decrease in the δ18O value at AD 1720 indicates an abrupt increase in monsoon rainfall, suggesting that an atmospheric-oceanic couple over the tropical Indian Ocean plays an important role in rapid increase of the Northern Hemisphere temperature over the last century.

AB - Based on MC-ICP-MS U-series dating and stable O-isotope analysis results, a 4-5 years resolution monsoon record over the past 1000 years has been established for two stalagmites from Dongge Cave, Guizhou. The high resolution oxygen isotope record serves as a proxy for variations in rainfall of Asian southwest monsoon over the Yunnan-Guizhou Plateau. A close relation of the δ18O record with the Δ14C record from tree rings largely reflects impact of centennial-scale solar activity on the monsoon climate changes. The conspicuous decrease in the δ18O value at AD 1720 indicates an abrupt increase in monsoon rainfall, suggesting that an atmospheric-oceanic couple over the tropical Indian Ocean plays an important role in rapid increase of the Northern Hemisphere temperature over the last century.

KW - Cave stalagmite

KW - Guizhou

KW - Oxygen isotope

KW - Solar activity

KW - Southwest monsoon

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