Different topographic reduction methods in practical gravimetric geoid determination

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Three different topographic reduction methods in geoid determination were investigated. The first method is the classical Helmert second method of condensation yielding the geoid, the second is the Residual Terrain Model (RTM) method yielding the quasigeoid and the third is the Rudzki inversion meth...

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Detalles Bibliográficos
Autores principales:	Tocho, Claudia Noemí, Sideris, Michael G., Font, Graciela
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2002
Materias:	Geofísica Helmert RTM Rudzki Geoid Quasigeoid Direct terrain effects Indirect effects Geoide Casi geoide Efectos directos sobre el terreno Efectos indirectos
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/139999
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-139999
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Geofísica Helmert RTM Rudzki Geoid Quasigeoid Direct terrain effects Indirect effects Geoide Casi geoide Efectos directos sobre el terreno Efectos indirectos
spellingShingle	Geofísica Helmert RTM Rudzki Geoid Quasigeoid Direct terrain effects Indirect effects Geoide Casi geoide Efectos directos sobre el terreno Efectos indirectos Tocho, Claudia Noemí Sideris, Michael G. Font, Graciela Different topographic reduction methods in practical gravimetric geoid determination
topic_facet	Geofísica Helmert RTM Rudzki Geoid Quasigeoid Direct terrain effects Indirect effects Geoide Casi geoide Efectos directos sobre el terreno Efectos indirectos
description	Three different topographic reduction methods in geoid determination were investigated. The first method is the classical Helmert second method of condensation yielding the geoid, the second is the Residual Terrain Model (RTM) method yielding the quasigeoid and the third is the Rudzki inversion method. The different types of indirect effects (indirect effect on gravity and indirect effect on geoid) in Helmert's method were also investigated. All three methods use the remove-restore technique and the EGM96 geopotential model as the reference gravity field. A mountainous area, ranging from 32°S to 42°S in latitude and 72°W to 68°W in longitude, was chosen as test area. The area was selected due to its high topography, with a maximum height of 6795 meters and a mean height of 1188 meters, and due to the existence of GPS/leveling points in three different networks. The topography in the test area is-represented by a digital terrain model (DTM) with a grid spacing of 1 km x 1 km. Another test was carried out in a flat area with denser data coverage. The external accuracy of the three gravimetric geoids was evaluated by comparing them to undulations derived from GPS/leveling.
format	Articulo Articulo
author	Tocho, Claudia Noemí Sideris, Michael G. Font, Graciela
author_facet	Tocho, Claudia Noemí Sideris, Michael G. Font, Graciela
author_sort	Tocho, Claudia Noemí
title	Different topographic reduction methods in practical gravimetric geoid determination
title_short	Different topographic reduction methods in practical gravimetric geoid determination
title_full	Different topographic reduction methods in practical gravimetric geoid determination
title_fullStr	Different topographic reduction methods in practical gravimetric geoid determination
title_full_unstemmed	Different topographic reduction methods in practical gravimetric geoid determination
title_sort	different topographic reduction methods in practical gravimetric geoid determination
publishDate	2002
url	http://sedici.unlp.edu.ar/handle/10915/139999
work_keys_str_mv	AT tochoclaudianoemi differenttopographicreductionmethodsinpracticalgravimetricgeoiddetermination AT siderismichaelg differenttopographicreductionmethodsinpracticalgravimetricgeoiddetermination AT fontgraciela differenttopographicreductionmethodsinpracticalgravimetricgeoiddetermination
bdutipo_str	Repositorios
_version_	1764820458177298433

Different topographic reduction methods in practical gravimetric geoid determination

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