气候变化领域集成服务门户(CCPortal): USE OF TEPHROCHRONOLOGY IN THE EVALUATION OF ACCUMULATION RATES ON NELSON ICE CAP, SOUTH SHETLAND ISLANDS, ANTARCTICA

CCPortal

	USE OF TEPHROCHRONOLOGY IN THE EVALUATION OF ACCUMULATION RATES ON NELSON ICE CAP, SOUTH SHETLAND ISLANDS, ANTARCTICA
	QIN, DH; ZIELINSKI, GA; GERMAIN, MS; REN, JW; WANG, XX; WANG, WT
发表日期	1994
ISSN	1001-652X
起始页码	1272
结束页码	&
卷号	37 期号:10
英文摘要	A volcanic ash layer was observed in the 3 ice cores on the Nelson Ice Cap, Antarctica. A comparison of major elemental composition of glass shards from the 3 tephra layers with average whole-rock compositions of 1967-1970 eruptions on the Deception Island and of glass shards from other suspected Deception Island eruptions collected from Antarctic ice and firn indicate that the most reasonable source for the tephra in the Nelson Ice Cap cores is the 1970 eruption on the Deception Island. From the depth of the volcanic ash layer and measured density profile of the cores, the net accumulation rate at the summit, Core GW, is 1200 g . cm(-2) . a(-1) during the past 20 years, and the net accumulation rates are 700 g . cm(-2) . a(-1) and 6 g . cm(-2) . a(-1) at sites N30 and N50, respectively. In the eastern part of the Nelson Ice Cap, the accumulation rate may be higher than that in the northern part, because no volcanic ash in ice cores was observed at similar depths collected from this region.
英文关键词	ICE CORE; STRATIGRAPHY TEPHROCHRONOLOGY; COMPOSITION OF GLASS SHARDS; ACCUMULATION RATE
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
来源期刊	SCIENCE IN CHINA SERIES B-CHEMISTRY LIFE SCIENCES & EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158787
作者单位	QIN, DH (corresponding author), ACAD SINICA,LANZHOU INST GLACIOL & GEOCRYOL,LANZHOU 730000,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	QIN, DH,ZIELINSKI, GA,GERMAIN, MS,et al. USE OF TEPHROCHRONOLOGY IN THE EVALUATION OF ACCUMULATION RATES ON NELSON ICE CAP, SOUTH SHETLAND ISLANDS, ANTARCTICA[J],1994,37(10).
APA	QIN, DH,ZIELINSKI, GA,GERMAIN, MS,REN, JW,WANG, XX,&WANG, WT.(1994).USE OF TEPHROCHRONOLOGY IN THE EVALUATION OF ACCUMULATION RATES ON NELSON ICE CAP, SOUTH SHETLAND ISLANDS, ANTARCTICA.SCIENCE IN CHINA SERIES B-CHEMISTRY LIFE SCIENCES & EARTH SCIENCES,37(10).
MLA	QIN, DH,et al."USE OF TEPHROCHRONOLOGY IN THE EVALUATION OF ACCUMULATION RATES ON NELSON ICE CAP, SOUTH SHETLAND ISLANDS, ANTARCTICA".SCIENCE IN CHINA SERIES B-CHEMISTRY LIFE SCIENCES & EARTH SCIENCES 37.10(1994).