气候变化领域集成服务门户(CCPortal): Factors controlling the nitrate in the DT-401 ice core in eastern Antarctica

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DOI	10.1007/s11430-012-8888-9
	Factors controlling the nitrate in the DT-401 ice core in eastern Antarctica
	Li ChuanJin; Ren JiaWen; Qin DaHe; Xiao CunDe; Hou ShuGui; Li YuanSheng; Ding MingHu
发表日期	2013
ISSN	1674-7313
起始页码	1531
结束页码	1539
卷号	56 期号:9
英文摘要	Nitrate, an oxidized product of NO (x) preserved in the polar ice cores, has often been used to estimate past changes of the atmospheric nitrogen cycle. A 102.65 m ice core drilled at DT-401 (79A degrees 01'S, 77A degrees 00'E) in 1999 provides an opportunity to investigate the possible influencing factors for the nitrate budget in the eastern Antarctica. We studied the relationship between the delta O-18 (representing the temperature), accumulation rate, volcanic deposition and the astronomical factors (such as the solar activities, supernovae, etc.), and the nitrate variation along the whole duration (2680-year) of the ice core. Prominent impacts of the accumulation rate acting on the nitrate flux rather than the concentration were detected. However, no significant correlation was found between the delta O-18 and the nitrate deposition characteristics (concentration and the flux variations). Volcanic deposition can significantly affect the deposition of nitrate with a decreasing trend accompanied by the nss-SO4 (-2) (volcanic signal) peak values. Impacts of the solar activities on the nitrate deposition can be detected at this site, and three prominent periodicities (16.6, 24.0 and 102.0 yr) were found for the nitrate concentration variations. Six climatic events (Dalton Minimum, Maunder Minimum, Sporer Minimum, Wolf Minimum, Oort Minimum and Medieval Maximum) during the past 1150 years were observed with lower nitrate values for the foregoing five events and higher value for the last one.
英文关键词	nitrate; oxygen isotope; accumulation rate; volcanic records; solar activity
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
来源期刊	SCIENCE CHINA-EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158611
作者单位	Li, CJ (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Li ChuanJin,Ren JiaWen,Qin DaHe,et al. Factors controlling the nitrate in the DT-401 ice core in eastern Antarctica[J],2013,56(9).
APA	Li ChuanJin.,Ren JiaWen.,Qin DaHe.,Xiao CunDe.,Hou ShuGui.,...&Ding MingHu.(2013).Factors controlling the nitrate in the DT-401 ice core in eastern Antarctica.SCIENCE CHINA-EARTH SCIENCES,56(9).
MLA	Li ChuanJin,et al."Factors controlling the nitrate in the DT-401 ice core in eastern Antarctica".SCIENCE CHINA-EARTH SCIENCES 56.9(2013).