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|a Simultaneous estimation of global present-day water transport and glacial isostatic adjustment |h [electronic resource]. |
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|a [S.l.] : |b Macmillan Publishers Limited, |c 2010. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Global water transport between oceans and continents during the transition from glacial to interglacial times has been
enormous. The viscoelastic solid Earth has been responding to this unloading of large ice masses with a rise of the land
masses, in a process termed glacial isostatic adjustment. In addition, significant changes in the land/ocean water distribution
occur at present. As both present-day changes in the ice/water thickness and glacial isostatic adjustment affect space
geodetic measurements, it is difficult to untangle the relative contributions of these two processes. Here we combine
gravity measurements and geodetic data of surface movement with a data-assimilating model of ocean bottom pressure
to simultaneously estimate present-day water transport and glacial isostatic adjustment. We determine their separate
contributions to movements in the geocentre, which occur in response to changes in the Earth’s mass distribution, with
uncertainties below0:1mmyr-1.According to our estimates, mass losses between 2002 and 2008 in Greenland, Alaska/Yukon
and West Antarctica are 104[plus or minus]23, 101[plus or minus]23 and 64[plus or minus]32 Gt yr-1, respectively. Our estimates of glacial isostatic adjustment
indicate a large geocentre velocity of -0.72[plus or minus]0.06mmyr-1 in the polar direction. We conclude that a significant revision of
the present estimates of glacial isostatic adjustments and land–ocean water exchange is required. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|t Simultaneous estimation of global present-day water transport and glacial isostatic adjustment |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15060909/00001 |y Click here for full text |
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|3 Host material |u http://www.nature.com/ngeo/journal/v3/n9/full/ngeo938.html |y Simultaneous estimation of global present-day water transport and glacial isostatic adjustment |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/09/09/00001/Wu et al_2010_Simultaneous estimation of global present-day water transport and glacialthm.jpg |
