About: Experiments on gravity gradient determination based on the analytical continuation method

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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	The method of analytical continuation of gravity disturbances (or gravity anomalies) is frequently used in local geoid (or quasigeoid) determination. Our aim is to show a practical applicability of the method by means of numerical experiments based on detailed surface gravity and terrain data in the Czech Republic region. For upward and downward analytical continuation of gravity disturbances we, therefore, introduce an efficient numerical method that can be applied on regular data grids. The advantage of the method is visible, especially when dealing with terrain data of very high spatial resolution. The method has been tested with the use of the Czech terrain model ZABAGED (10 m spatial resolution) and SRTM3 terrain data. To demonstrate the method experimentally, several localities with various terrain characteristics have been chosen. As a byproduct of the experiments we determined vertical gravity gradients at the ground level and compare the results with observed values. Impact of the proposed method on the quasigeoid determination, convergence and overall applicability of the method is discussed. Further discussion concerning a comparison with GOCE data will be added too. The method of analytical continuation of gravity disturbances (or gravity anomalies) is frequently used in local geoid (or quasigeoid) determination. Our aim is to show a practical applicability of the method by means of numerical experiments based on detailed surface gravity and terrain data in the Czech Republic region. For upward and downward analytical continuation of gravity disturbances we, therefore, introduce an efficient numerical method that can be applied on regular data grids. The advantage of the method is visible, especially when dealing with terrain data of very high spatial resolution. The method has been tested with the use of the Czech terrain model ZABAGED (10 m spatial resolution) and SRTM3 terrain data. To demonstrate the method experimentally, several localities with various terrain characteristics have been chosen. As a byproduct of the experiments we determined vertical gravity gradients at the ground level and compare the results with observed values. Impact of the proposed method on the quasigeoid determination, convergence and overall applicability of the method is discussed. Further discussion concerning a comparison with GOCE data will be added too. (en)
Title	Experiments on gravity gradient determination based on the analytical continuation method Experiments on gravity gradient determination based on the analytical continuation method (en)
skos:prefLabel	Experiments on gravity gradient determination based on the analytical continuation method Experiments on gravity gradient determination based on the analytical continuation method (en)
skos:notation	RIV/00025615:_____/13:#0001896!RIV14-MSM-00025615
http://linked.open...avai/predkladatel	Výzkumný ústav geodetický, topografický a kartografický, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(ED1.1.00/02.0090)
http://linked.open...vai/riv/dodaniDat	2014
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	74241
http://linked.open...ai/riv/idVysledku	RIV/00025615:_____/13:#0001896
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	geodetic boundary value problems; potential theory; gravity disturbance; gravity gradient; quasigeoid determination (en)
http://linked.open.../riv/klicoveSlovo	gravity disturbance gravity gradient potential theory quasigeoid determination geodetic boundary value problems
http://linked.open...i/riv/kodPristupu	L
http://linked.open...ontrolniKodProRIV	[C89EB527ACBD]
http://linked.open...i/riv/mistoVydani	Vienna
http://linked.open...telVyzkumneZpravy	European Geosciences 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...vavai/riv/projekt	NTIS - New Technologies for Information Society
http://linked.open...UplatneniVysledku	2013
http://linked.open...iv/tvurceVysledku	Holota, Petr Nesvadba, Otakar

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