气候变化领域集成服务门户(CCPortal): Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change

CCPortal

DOI	10.1073/pnas.1204664109
	Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change
	Bevis M.; Wahr J.; Khan S.A.; Madsen F.B.; Brown A.; Willis M.; Kendrick E.; Knudsen P.; Box J.E.; Van Dam T.; Caccamise II D.J.; Johns B.; Nylen T.; Abbott R.; White S.; Miner J.; Forsberg R.; Zhou H.; Wang J.; Wilson T.; Bromwich D.; Francis O.
发表日期	2012
ISSN	0027-8424
起始页码	11944
结束页码	11948
卷号	109 期号:30
英文摘要	The Greenland GPS Network (GNET) uses the Global Positioning System (GPS) to measure the displacement of bedrock exposed near the margins of the Greenland ice sheet. The entire network is uplifting in response to past and present-day changes in ice mass. Crustal displacement is largely accounted for by an annual oscillation superimposed on a sustained trend. The oscillation is driven by earth's elastic response to seasonal variations in ice mass and air mass (i.e., atmospheric pressure). Observed vertical velocities are higher and often much higher than predicted rates of postglacial rebound (PGR), implying that uplift is usually dominated by the solid earth's instantaneous elastic response to contemporary losses in ice mass rather than PGR. Superimposed on longer-term trends, an anomalous 'pulse' of uplift accumulated at many GNET stations during an approximate six-month period in 2010. This anomalous uplift is spatially correlated with the 2010 melting day anomaly.
英文关键词	Climate change; Climate cycles; Crustal motion geodesy; Elasticity
语种	英语
scopus关键词	article; atmospheric pressure; bedrock displacement; climate change; cold climate; elasticity; geographic elevation; geographic information system; glacial mass balance; global positioning system; Greenland; ice sheet; melting point; oscillation; priority journal; seasonal variation; velocity; Climate; Climate Change; Elasticity; Geographic Information Systems; Geological Processes; Greenland; Ice Cover; Seasons
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159131
作者单位	Bevis, M., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Wahr, J., Department of Physics, University of Colorado, Boulder, CO 80309, United States; Khan, S.A., DTU Space, National Space Institute, Lyngby, Denmark; Madsen, F.B., DTU Space, National Space Institute, Lyngby, Denmark; Brown, A., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Willis, M., Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853, United States; Kendrick, E., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Knudsen, P., DTU Space, National Space Institute, Lyngby, Denmark; Box, J.E., Department of Geography, Ohio State University, Columbus, OH 43210, United States; Van Dam, T., Faculté de Sciences, University of Luxembourg, Luxembourg; Caccamise II, D.J., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Johns, B., UNAVCO Inc., Boulder, CO 80301, United States; N...
推荐引用方式 GB/T 7714	Bevis M.,Wahr J.,Khan S.A.,et al. Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change[J],2012,109(30).
APA	Bevis M..,Wahr J..,Khan S.A..,Madsen F.B..,Brown A..,...&Francis O..(2012).Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change.Proceedings of the National Academy of Sciences of the United States of America,109(30).
MLA	Bevis M.,et al."Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change".Proceedings of the National Academy of Sciences of the United States of America 109.30(2012).