Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil

The vertical reference frames for Argentina and Brazil present discrepancies due to their different datums and realizations. Thus, since 2008, we have started a series of activities with the aim of unifying the Argentine and Brazilian national vertical networks (NVNs). To achieve this goal, we have...

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Autores principales: Gomez, María Eugenia, Pereira, R. A. D., Del Cogliano, Daniel Héctor, Luz, R. T., Freitas, S. R. C. de, Farias, Carolina, Perdomo, Raúl Aníbal, Tocho, Claudia Noemí, Lauria, E., Cimbaro, S.
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2013
Materias:
Geofísica
Argentine and Brazilian levelling networks
Geodetic levelling approach
Gravity field approach
Vertical datum connection
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127533
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127533
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geofísica
Argentine and Brazilian levelling networks
Geodetic levelling approach
Gravity field approach
Vertical datum connection
spellingShingle Geofísica
Argentine and Brazilian levelling networks
Geodetic levelling approach
Gravity field approach
Vertical datum connection
Gomez, María Eugenia
Pereira, R. A. D.
Del Cogliano, Daniel Héctor
Luz, R. T.
Freitas, S. R. C. de
Farias, Carolina
Perdomo, Raúl Aníbal
Tocho, Claudia Noemí
Lauria, E.
Cimbaro, S.
Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil
topic_facet Geofísica
Argentine and Brazilian levelling networks
Geodetic levelling approach
Gravity field approach
Vertical datum connection
description The vertical reference frames for Argentina and Brazil present discrepancies due to their different datums and realizations. Thus, since 2008, we have started a series of activities with the aim of unifying the Argentine and Brazilian national vertical networks (NVNs). To achieve this goal, we have connected the two NVNs at three border points by using the geodetic levelling approach. Additionally, the gravity field approach was also applied, based on a suitable representation of the geoid by considering the Earth GravitationalModel (EGM2008) in its full resolution. In this regard, 1266 co-located Global Positioning System (GPS) and levelling benchmarks regularly distributed over Argentina (612) and Brazil (654) were considered. The geodetic levelling approach shows an offset value of 54 cm, which implies that the Argentine vertical reference frame is above that of the Brazilian vertical reference frame. However, the result of the gravimetric approach shows an offset of 57 cm, which implies a difference of approximately 3 cm between both methods. Hence, since Brazil and Argentina represent a significant part of South America, the solution to the datum problem between both countries could point towards a common vertical reference frame for the Atlantic side.
format Objeto de conferencia
Objeto de conferencia
author Gomez, María Eugenia
Pereira, R. A. D.
Del Cogliano, Daniel Héctor
Luz, R. T.
Freitas, S. R. C. de
Farias, Carolina
Perdomo, Raúl Aníbal
Tocho, Claudia Noemí
Lauria, E.
Cimbaro, S.
author_facet Gomez, María Eugenia
Pereira, R. A. D.
Del Cogliano, Daniel Héctor
Luz, R. T.
Freitas, S. R. C. de
Farias, Carolina
Perdomo, Raúl Aníbal
Tocho, Claudia Noemí
Lauria, E.
Cimbaro, S.
author_sort Gomez, María Eugenia
title Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil
title_short Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil
title_full Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil
title_fullStr Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil
title_full_unstemmed Analysis of the discrepancies between the vertical reference frames of Argentina and Brazil
title_sort analysis of the discrepancies between the vertical reference frames of argentina and brazil
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/127533
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