About: On the differences and compatibility of global and GOCE-based models of the gravity field of the Earth

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About: On the differences and compatibility of global and GOCE-based models of the gravity field of the Earth Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Global models of the gravity field of the Earth that involve terrestrial measurements and GOCE-based gravity field models represent two different sources of information on the gravity field of the Earth. The aim of this paper is to focus on their combination. The problem has an essential tie to potential theory and it is not difficult to realize that by nature it is an overdetermined problem. Therefore, methods typical for the solution of boundary-value problems of potential theory will be applied together with an optimization approach, target function and regularization techniques. The aim also is to demonstrate the effect of the two different data sources on the resulting solution and to show its spectral and space domain interpretation. In particular, the use of gravity field information contained in satellite-only models of the gravity field of the Earth or alternatively in GOCE gradiometric data in common with terrestrial gravity measurements is discussed in the paper. The compatibility of these two different data sources is given a considerable attention. The theoretical background outlined above is applied and compatibility indicators are defined. Subsequently numerical tests confronting data derived from EGM2008 and from the latest release of GOCE-based gravity model are performed. Results of this analysis are summarized and interpreted. Global models of the gravity field of the Earth that involve terrestrial measurements and GOCE-based gravity field models represent two different sources of information on the gravity field of the Earth. The aim of this paper is to focus on their combination. The problem has an essential tie to potential theory and it is not difficult to realize that by nature it is an overdetermined problem. Therefore, methods typical for the solution of boundary-value problems of potential theory will be applied together with an optimization approach, target function and regularization techniques. The aim also is to demonstrate the effect of the two different data sources on the resulting solution and to show its spectral and space domain interpretation. In particular, the use of gravity field information contained in satellite-only models of the gravity field of the Earth or alternatively in GOCE gradiometric data in common with terrestrial gravity measurements is discussed in the paper. The compatibility of these two different data sources is given a considerable attention. The theoretical background outlined above is applied and compatibility indicators are defined. Subsequently numerical tests confronting data derived from EGM2008 and from the latest release of GOCE-based gravity model are performed. Results of this analysis are summarized and interpreted. (en)
Title	On the differences and compatibility of global and GOCE-based models of the gravity field of the Earth On the differences and compatibility of global and GOCE-based models of the gravity field of the Earth (en)
skos:prefLabel	On the differences and compatibility of global and GOCE-based models of the gravity field of the Earth On the differences and compatibility of global and GOCE-based models of the gravity field of the Earth (en)
skos:notation	RIV/00025615:_____/12:#0001837!RIV13-MSM-00025615
http://linked.open...avai/predkladatel	Výzkumný ústav geodetický, topografický a kartografický, v.v.i.
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Nesvadba, Otakar Holota, Petr
http://linked.open.../riv/druhVysledku	A(V) - Audiovizuální tvorba se vzdáleným přístupem
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Výzkumný ústav geodetický, topografický a kartografický, v.v.i.
http://linked.open...dnocenehoVysledku	156383
http://linked.open...ai/riv/idVysledku	RIV/00025615:_____/12:#0001837
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Modelling of the Earth’s gravity field; geodetic boundary-value problems; overdetermined problems; terrestrial and satellite data; optimization (en)
http://linked.open.../riv/klicoveSlovo	geodetic boundary-value problems optimization overdetermined problems Modelling of the Earth’s gravity field terrestrial and satellite data
http://linked.open...i/riv/kodPristupu	L
http://linked.open...ontrolniKodProRIV	[A378608236AC]
http://linked.open...i/riv/mistoVydani	Vienna
http://linked.open...telVyzkumneZpravy	European Geoscience Union
http://linked.open...in/vavai/riv/obor	DE
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Holota, Petr Nesvadba, Otakar

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