气候变化领域集成服务门户(CCPortal): Collapse of the California current during glacial maxima linked to climate change on land

CCPortal

DOI	10.1126/science.1059209
	Collapse of the California current during glacial maxima linked to climate change on land
	Herbert T.D.; Schuffert J.D.; Andreasen D.; Heusser L.; Lyle M.; Mix A.; Ravelo A.C.; Stott L.D.; Herguera J.C.
发表日期	2001
ISSN	0036-8075
起始页码	71
结束页码	76
卷号	293 期号:5527
英文摘要	Time series of alkenone unsaturation indices gathered along the California margin reveal large (4° to 8°C) glacial-interglacial changes in sea surface temperature (SST) over the past 550,000 years. Interglacial times with SSTs equal to or exceeding that of the Holocene contain peak abundances in the pollen of redwood, the distinctive component of the temperate rainforest of the north-west coast of California. In the region now dominated by the California Current, SSTs warmed 10,000 to 15,000 years in advance of deglaciation at each of the past five glacial maxima. SSTs did not rise in advance of deglaciation south of the modern California Current front. Glacial warming along the California margin therefore is a regional signal of the weakening of the California Current during times when large ice sheets reorganized wind systems over the North Pacific. Both the timing and magnitude of the SST estimates suggest that the Devils Hole (Nevada) calcite record represents regional but not global paleo-temperatures, and hence does not pose a fundamental challenge to the orbital ("Milankovitch") theory of the Ice Ages.
英文关键词	Climate change; Ocean currents; Orbits; Sea ice; Sea surface temperature (SST); Glacial geology; ice; calcium carbonate; ice; sea water; climate change; current; Last Glacial Maximum; oceanic circulation; paleoceanography; article; climate; environmental temperature; forest; priority journal; sea; United States; warming; water temperature; biological model; diatom; Pacific Ocean; physiology; pollen; temperature; tree; Pacific Ocean; Sequoia sempervirens; Calcium Carbonate; California; Climate; Diatoms; Ice; Models, Biological; Nevada; Pacific Ocean; Pollen; Seawater; Temperature; Trees
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/244000
作者单位	Department of Geological Sciences, Brown University, Providence, RI 02912, United States
推荐引用方式 GB/T 7714	Herbert T.D.,Schuffert J.D.,Andreasen D.,et al. Collapse of the California current during glacial maxima linked to climate change on land[J],2001,293(5527).
APA	Herbert T.D..,Schuffert J.D..,Andreasen D..,Heusser L..,Lyle M..,...&Herguera J.C..(2001).Collapse of the California current during glacial maxima linked to climate change on land.Science,293(5527).
MLA	Herbert T.D.,et al."Collapse of the California current during glacial maxima linked to climate change on land".Science 293.5527(2001).