气候变化领域集成服务门户(CCPortal): Carbon isotopic evidence for methane hydrate instability during quaternary interstadials

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DOI	10.1126/science.288.5463.128
	Carbon isotopic evidence for methane hydrate instability during quaternary interstadials
	Kennett J.P.; Cannariato K.G.; Hendy I.L.; Behl R.J.
发表日期	2000
ISSN	0036-8075
起始页码	128
结束页码	133
卷号	288 期号:5463
英文摘要	Large (about 5 per mil) millennial-scale benthic foraminiferal carbon isotopic oscillations in the Santa Barbara Basin during the last 60,000 years reflect widespread shoaling of sedimentary methane gradients and increased outgassing from gas hydrate dissociation during interstadials. Furthermore, several large, brief, negative excursions (up to -6 per mil) coinciding with smaller shifts (up to -3 per mil) in depth-stratified planktonic foraminiferal species indicate massive releases of methane from basin sediments. Gas hydrate stability was modulated by intermediate-water temperature changes induced by switches in thermohaline circulation. These oscillations were likely widespread along the California margin and elsewhere, affecting gas hydrate instability and contributing to millennial- scale atmospheric methane oscillations.
英文关键词	carbon; methane; degassing; gas hydrate; instability; interstadial; methane; Quaternary; air monitoring; article; atmospheric dispersion; benthos; oscillation; priority journal; radioisotope distribution; sediment; species difference; United States
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/244258
作者单位	Geol. Sci. and Mar. Sci. Institute, University of California, Santa Barbara, CA 93106, United States; Department of Geological Sciences, California State University, Long Beach, CA 90840, United States
推荐引用方式 GB/T 7714	Kennett J.P.,Cannariato K.G.,Hendy I.L.,et al. Carbon isotopic evidence for methane hydrate instability during quaternary interstadials[J],2000,288(5463).
APA	Kennett J.P.,Cannariato K.G.,Hendy I.L.,&Behl R.J..(2000).Carbon isotopic evidence for methane hydrate instability during quaternary interstadials.Science,288(5463).
MLA	Kennett J.P.,et al."Carbon isotopic evidence for methane hydrate instability during quaternary interstadials".Science 288.5463(2000).