Changes of the trace metals in ice core during 1915-2016 in coastal eastern AntarcticaOA
Changes of the trace metals in ice core during 1915-2016 in coastal eastern Antarctica
Antarctic trace metal records provide important information for grasping the influence of human activities on the environment over the last centuries.The CA2016-75 ice core is located along the East Antarctic Zhongshan Station-Dome A,enhances the record of metals research in the East Antarctic region,and its high-resolution supplies data support for the study of high-frequency climatic drivers and the effect of human activities on the Antarctic environment.A thorough dataset on seven trace metals(Al,Fe,Mn,Cu,Zn,Ba and Pb)in a coastal ice core in eastern Antarctica during the previous 102 years(1915-2016)is presented in this study.Pb has the lowest concentration(9.51±20.95 pg g-1),and Ba has the highest concentration(36.57±51.35 ng g-1).Notable variations are observed between the pre-1968 AD and post-1968 AD phases for Mn,Zn and Ba.The abrupt,remarkable increase in the concentrations coincided with the change of metal smelting production in the southern hemisphere.In addition to this,it may also be related to local Antarctic scientific research activities.Al and Fe,the primary crustal elements,are essentially obtained from soil dust;Cu shows high crustal enrichment factors(EFc,＞10),indicating that it is notably affected by anthropogenic activities.Moreover,the anthropogenic activities in the Southern Hemisphere have had an impact on lead deposition in Antarctica.This study not only enriches the trace metal historical record along the Zhongshan Station-Dome A but also provides a high-resolution ice core record,which is very crucial for the reconstruction of trace metal concentration changes in the last 100 years.
Jing-Wen LIU;Bo SUN;Chuan-Jin LI;Gui-Tao SHI;Yan LIU;Zhi-Heng DU;Ming-Hu DING;Shao-Peng GAO;Cun-De XIAO;Shi-Chang KANG
State Key Laboratory of the Cryosphere Science,Northwest Institute of the Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,730000,China||University of Chinese Academy of Sciences,Beijing 100049,ChinaKey Laboratory for Polar Science of State Oceanic Administration,Polar Research Institute of China,Shanghai 200136,ChinaKey Laboratory of Geographic Information Science(Ministry of Education),School of Geographic Sciences and Institute of Eco-Chongming,East China Normal University,Shanghai 200241,ChinaState Key Laboratory of the Cryosphere Science,Northwest Institute of the Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,730000,ChinaInstitute of Tibetan Plateau and Polar Regions Meteorology,Chinese Academy of Meteorological Sciences,Beijing 100081,ChinaKey Laboratory of Tibetan Environment Changes and Land Surface Processes,Institute of the Tibetan Plateau,Chinese Academy of Sciences,Beijing 100101,ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology,Beijing Normal University,Beijing 100875,China
Eastern AntarcticaIce coreTrace metalsHuman activities
《气候变化研究进展（英文版）》 2024 (004)
596-608 / 13
The authors sincerely thank all the members who partici-pated in the 32nd Chinese National Antarctic Research Expedition(2015-2016)inland field campaigns for their heLp in the ice core sampling works.The authors especially thank Ms.Xiao-Xiang Wang,Yu-Man Zhu,Qiu-Fang Bao and Xiao-Qing Cui from the Northwestern Institute of Eco-Environment and Resources,Chinese Academy of Sciences,who completed parts of the analysis.The authors acknowledge the financial support from the National Natural Science Foundation of China(42176240,41671063,41701071,42101142 and 41671073),the self-dependent project of the State Key Lab-oratory of Cryospheric Science Supporting Fund in China(SKLCS-ZZ-2023),the Innovative Research Group Project China(1110000001)and CAS Pioneer Hundred Talents Pro-gramme in China(X.-X.Wang).
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