High resolution stalagmite δ^(18)O records over the past 1000 years from Dongge Cave in Guizhou

查看全文 作　　者：[1]HEYaoqi;[1]WANGYongjin;[1]KONGXinggong;[2]CHENGHai

机构地区：[1]CollegeofGeographyScience,NanjingNormalUniversity,Nanjing210097,China;[2]DepartmentofGeologyandGeophysics,MinnesotaUniversity,MineapolisMN55455,USA

出　　处：《Chinese Science Bulletin》索引2005年第50卷第10期,共6页

基　　金：This work was supported by the National Outstanding Youth Foundation of China(Grant No.40225007);the 973 Project(Grant No.2004CB20204). 摘　　要：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 estab- lished 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 δ 18O record with the ?14C record from tree rings largely reflects impact of centennial-scale solar activity on the monsoon climate changes. The conspicuous decrease in the δ 18O value at AD 1720 indicates an abrupt increase in monsoon rainfall, sug- gesting 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. 关键词：贵州地质研究溶洞石笋氧同位素

相关文献

参考文献（31）
引证文献（33）
耦合文献（59）

参考文献(31)

引证文献(33)

耦合文献(59)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

High resolution stalagmite δ^(18)O records over the past 1000 years from Dongge Cave in Guizhou

参考文献(31)

引证文献(33)

耦合文献(59)

用户提示