Reference : Bedrock displacements in Greenland manifest ice mass variations, climate cycles and c...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/442

Title :	Bedrock displacements in Greenland manifest ice mass variations, climate cycles and climate change
Language :	English
Author, co-author :	Bevis, Michael [School of Earth Sciences, Ohio State University, Columbus]
	Wahr, John [Department of Physics, University of Colorado, Boulder]
	Khan, Shfaqat A. [DTU Space, National Space Institute, Lyngby, Denmark]
	Madsen, Finn Bo [DTU Space, National Space Institute, Lyngby, Denmark]
	Brown, Abel [Department of Geography , Ohio State University, Columbus]
	Willis, Michael [> >]
	Kendrick, Eric [UNAVCO Inc., Boulder, CO]
	Knudsen, Per [DTU Space, National Space Institute, Lyngby, Denmark]
	Box, Jason E. [Department of Geography , Ohio State University, Columbus]
	van Dam, Tonie [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Caccamise II, Dana J. [School of Earth Sciences, Ohio State University, Columbus]
	Johns, Bjorn [UNAVCO Inc., Boulder, CO]
	Nylen, Thomas [UNAVCO Inc., Boulder, CO]
	Abbott, Robin [Polar Field Services, Boulder, CO]
	White, Seth [UNAVCO Inc., Boulder, CO]
	Miner, Jeremy [UNAVCO Inc., Boulder, CO]
	Forsberg, Rene [DTU Space, National Space Institute, Lyngby, Denmark]
	Zhou, Hao [Department of Geography , Ohio State University, Columbus]
	Wang, Jian [Department of Geography , Ohio State University, Columbus]
	Wilson, Terry [Department of Geography , Ohio State University, Columbus]
	Bromwich, David [Department of Geography , Ohio State University, Columbus]
	Francis, Olivier [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Publication date :	2012
Journal title :	Proceedings of the National Academy of Sciences of the United States of America
Publisher :	National Academy of Sciences
Volume :	109
Issue/season :	30
Pages :	11944-11948
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	0027-8424
e-ISSN :	1091-6490
City :	Washington
Country :	DC
Keywords :	[en] global change ; Greenland ; ice mass change
Abstract :	[en] 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.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/10993/442

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Limited access bevis_et_al_pnas_2012.pdf Publisher postprint 2.53 MB Request a copy Additional material(s): File Commentary Size Access Limited access bevis_et_al_pnas_2012_supp.pdf 2.38 MB Request a copy

All documents in ORBi^lu are protected by a user license.

 

University of Luxembourg Library |  Feedback |  Legal notices Site Map