气候变化领域集成服务门户(CCPortal): A 2680 year volcanic record from the DT-401 East Antarctic ice core

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DOI	10.1029/2009JD012892
	A 2680 year volcanic record from the DT-401 East Antarctic ice core
	Ren, Jiawen; Li, Chuanjin; Hou, Shugui; Xiao, Cunde; Qin, Dahe; Li, Yuansheng; Ding, Minghu
发表日期	2010
ISSN	2169-897X
卷号	115
英文摘要	Volcanic signals recorded in the Antarctic and Greenland ice cores can provide useful information on past explosive volcanism and its impact. In this study, we carried out a continuous sulfate analysis of a 102.65 m East Antarctic ice core (DT-401, dated as 2682 years) and identified 36 extensive volcanic eruption signals using Cole-Dai's method, which gives an average of 1.4 eruptions per century, consistent with the results from the Plateau Remote (PR-B) ice core. When the record is divided into three parts, the latest millennium (1999-1000 A. D.), the middle millennium (999-1 A. D.), and the earliest 682 years (0 A. D. to 682 B. C.), it is found that there were more volcanic eruptions that occurred during the latest millennium (19 eruptions) than during the middle millennium (10 eruptions) of the record and that the intensities of the eruptions in the latest millennium are markedly larger than those in the middle one. There were only seven events recorded in the earliest 682 years, but their intensities were greater, and nearly half of the eruptions had a similar intensity to Tambora's (1815 A. D.), which differs from the PR-B record. It is also found that volcanism and its average accumulation rate were lower during the Little Ice Age than during the Medieval Warm Period. Comparison of volcanic records between DT-401 and other Antarctica ice cores (PR-B, Dome C, DT-263, and Byrd) show that in the East Antarctica area with its lower accumulation rates, postdepositional effects may play an important role in the deposition of the sulfate.
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158659
作者单位	Li, CJ (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Donggang W Rd 320, Lanzhou 730000, Gansu, Peoples R China.
推荐引用方式 GB/T 7714	Ren, Jiawen,Li, Chuanjin,Hou, Shugui,et al. A 2680 year volcanic record from the DT-401 East Antarctic ice core[J],2010,115.
APA	Ren, Jiawen.,Li, Chuanjin.,Hou, Shugui.,Xiao, Cunde.,Qin, Dahe.,...&Ding, Minghu.(2010).A 2680 year volcanic record from the DT-401 East Antarctic ice core.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,115.
MLA	Ren, Jiawen,et al."A 2680 year volcanic record from the DT-401 East Antarctic ice core".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 115(2010).