globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1204664109
论文题名:
Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change
作者: 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.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2012
卷: 109, 期:30
起始页码: 11944
结束页码: 11948
语种: 英语
英文关键词: Climate change ; Climate cycles ; Crustal motion geodesy ; Elasticity
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162409
Appears in Collections:气候变化与战略

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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; Nylen, T., UNAVCO Inc., Boulder, CO 80301, United States; Abbott, R., Polar Field Services, Boulder, CO 80127, United States; White, S., UNAVCO Inc., Boulder, CO 80301, United States; Miner, J., UNAVCO Inc., Boulder, CO 80301, United States; Forsberg, R., DTU Space, National Space Institute, Lyngby, Denmark; Zhou, H., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Wang, J., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Wilson, T., School of Earth Sciences, Ohio State University, Columbus, OH 43210, United States; Bromwich, D., Department of Geography, Ohio State University, Columbus, OH 43210, United States; Francis, O., Faculté de Sciences, University of Luxembourg, Luxembourg

Recommended Citation:
Bevis M.,Wahr J.,Khan S.A.,et al. Bedrock displacements in Greenland manifest ice mass variations; climate cycles and climate change[J]. Proceedings of the National Academy of Sciences of the United States of America,2012-01-01,109(30)
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