About: Combined GRACE and InSAR estimate of West Antarctic ice mass loss

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About: Combined GRACE and InSAR estimate of West Antarctic ice mass loss Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We estimate the mass balance of eight drainage basins in West Antarctica from the Gravity Recovery and Climate Experiment (GRACE) data (GFZ RL04, GSM Level 2) using a constrained inverse?gravimetric approach. We consider InSAR observations of ice surface velocity as an indication of mass change, assuming that large mass loss occurs in areas of fast glacier flow. From these mass distribution functions we construct forward models of the geoid height change and their spatial correlations for each drainage basin. Then the difference between the GRACE data and the forward model is minimized by adjusting the total amount of mass change within each drainage basin. To overcome the ambiguity inherent in this inverse problem, we constrain its solution by including a priori estimates based on the InSAR mass?budget method. However, unconstrained (GRACE only) mass?change estimates can be recovered for three to four combined drainage basins. We estimate the mass balance of eight drainage basins in West Antarctica from the Gravity Recovery and Climate Experiment (GRACE) data (GFZ RL04, GSM Level 2) using a constrained inverse?gravimetric approach. We consider InSAR observations of ice surface velocity as an indication of mass change, assuming that large mass loss occurs in areas of fast glacier flow. From these mass distribution functions we construct forward models of the geoid height change and their spatial correlations for each drainage basin. Then the difference between the GRACE data and the forward model is minimized by adjusting the total amount of mass change within each drainage basin. To overcome the ambiguity inherent in this inverse problem, we constrain its solution by including a priori estimates based on the InSAR mass?budget method. However, unconstrained (GRACE only) mass?change estimates can be recovered for three to four combined drainage basins. (en)
Title	Combined GRACE and InSAR estimate of West Antarctic ice mass loss Combined GRACE and InSAR estimate of West Antarctic ice mass loss (en)
skos:prefLabel	Combined GRACE and InSAR estimate of West Antarctic ice mass loss Combined GRACE and InSAR estimate of West Antarctic ice mass loss (en)
skos:notation	RIV/00216208:11320/10:10051617!RIV11-MSM-11320___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Martinec, Zdeněk
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	251216
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/10:10051617
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	loss; mass; ice; Antarctic; West; estimate; InSAR; and; GRACE; Combined (en)
http://linked.open.../riv/klicoveSlovo	West loss Antarctic estimate InSAR and ice mass GRACE Combined
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[35493AF6EA89]
http://linked.open...i/riv/nazevZdroje	Journal of Geophysical Research
http://linked.open...in/vavai/riv/obor	DE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	115
http://linked.open...iv/tvurceVysledku	Martinec, Zdeněk Bamber, J. Sasgen, I.
http://linked.open...ain/vavai/riv/wos	000283547000003
http://linked.open...n/vavai/riv/zamer	Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
issn	0148-0227
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	11320

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