气候变化领域集成服务门户(CCPortal): Volatiles from the 1994 eruptions of Rabaul: Understanding large caldera systems

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DOI	10.1126/science.273.5274.490
	Volatiles from the 1994 eruptions of Rabaul: Understanding large caldera systems
	Roggensack K.; Williams S.N.; Schaefer S.J.; Parnell Jr. R.A.
发表日期	1996
ISSN	0036-8075
起始页码	490
结束页码	493
卷号	273 期号:5274
英文摘要	The 1994 eruption of Rabaul, in Papua New Guinea, involved a small plinian eruption at Vulcan and a vulcanian eruption on the opposite side of the camera at Tavurvur. Vulcan's ash leachates indicate seawater interaction that is consistent with earlier observations of low sulfur dioxide emissions and the presence of ice crystals in the initial plinian eruption cloud. In contrast, Tavurvur ash leachates indicate no seawater interaction, and later sulfur dioxide emissions remained high despite low-level eruptive activity. Silicic melt inclusions indicate that the andesitic melt contained about 2 weight percent water and negligible carbon dioxide. Mafic melt inclusions in Tavurvur ash have water and carbon dioxide contents that vary systematically over the course of the eruption. The mafic melt inclusions suggest that a mafic dike intruded from below the silicic chamber and provide further evidence that mafic intrusions drive caldera unrest.
英文关键词	carbon dioxide; chloride; ice; sea water; silicic acid; sulfur; sulfur dioxide; water; article; atomic absorption spectrometry; chemical composition; geology; leaching; Papua New Guinea; priority journal; radiation detector; spectrometry; volcanic ash; volcano; caldera; carbon dioxide; mafic intrusion; volatile element; volcanic eruption; volcanic gas; Papua New Guinea, Rabaul
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245266
作者单位	Department of Geology, Box 871404, Arizona State University, Tempe, AZ 85287-1404, United States; Department of Geology, Northern Arizona University, Flagstaff, AZ 86011, United States; Univ. Space Research Association, NASA, Goddard Space Flight Ctr., Code 921, Greenbelt, MD 20771, United States
推荐引用方式 GB/T 7714	Roggensack K.,Williams S.N.,Schaefer S.J.,et al. Volatiles from the 1994 eruptions of Rabaul: Understanding large caldera systems[J],1996,273(5274).
APA	Roggensack K.,Williams S.N.,Schaefer S.J.,&Parnell Jr. R.A..(1996).Volatiles from the 1994 eruptions of Rabaul: Understanding large caldera systems.Science,273(5274).
MLA	Roggensack K.,et al."Volatiles from the 1994 eruptions of Rabaul: Understanding large caldera systems".Science 273.5274(1996).