PHYSICAL CONNECTION BETWEEN BVRF SEGMENTS BASED ON LEVELING ASSOCIATED WITH GRAVIMETRY

Autores

  • Andrea Santacruz Jaramillo Universidade Federal do Paraná, Curso de Pós-graduação em Ciências Geodésicas, Curitiba, Paraná
  • Silvio Rogerio Correia de Freitas Universidade Federal do Paraná, Curso de Pós-graduação em Ciências Geodésicas, Curitiba, Paraná http://orcid.org/0000-0003-0830-6541
  • Roberto Teixeira Luz Instituto Brasileiro de Geografia e Estatística, Coordenação de Geodésia, Rio de Janeiro http://orcid.org/0000-0002-0686-952X

Resumo

Considering the efforts to establish Global Reference Systems linked to the geopotential space, new alternatives are sought to address the problems found in the classic national vertical networks. The Brazilian Vertical Reference Frame (BVRF) was materialized in two different segments with independent datums (Imbituba and Santana tide gauges) due to the terrain difficulties for conventional leveling. The 2018 BVRF realization, in the geopotential space, still remains without interoperability between its segments. We analyze alternatives for physical connection based on the new precepts of the International Association of Geodesy (IAG) involving the geopotential space. Some proposed solutions for physical connection based on GPS leveling associated with gravimetry are presented. These solutions were developed with the aim of evidencing the discrepancy between the two BVRF segments, now carried out in terms of geopotential numbers and normal heights. The results indicate differences ranging from about 45 cm to 140 cm between the two segments depending on the strategy employed. Comparisons with previous determinations based on indirect strategies and involving previous BVRF realizations are made.

Downloads

Publicado

2019-04-18

Como Citar

Jaramillo, A. S., de Freitas, S. R. C., & Luz, R. T. (2019). PHYSICAL CONNECTION BETWEEN BVRF SEGMENTS BASED ON LEVELING ASSOCIATED WITH GRAVIMETRY. Boletim De Ciências Geodésicas, 25(1). Recuperado de https://revistas.ufpr.br/bcg/article/view/66125

Edição

v. 25 n. 1 (2019)

Seção

Artigos

Licença

Direitos Autorais para artigos publicados nesta revista são do autor, com direitos de primeira publicação para a revista. Os autores também têm os direitos de publicação dos artigos, sem restrições.  Em virtude da aparecerem nesta revista de acesso público, os artigos são de uso gratuito, com atribuições próprias, em aplicações educacionais e não-comerciais.