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The Azores global positioning system network
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Advisor(s)
Abstract(s)
A rede TANGO foi estabelecida em 1988 com 12 estações GPS (Global Positioning System) situadas em quatro das principais placas tectónicas: Euro-Asiática, Norte Americana, Africana e Caraíbas. Entre os principais objectivos do projecto contam-se o estabelecimento de uma rede geodésica de ordem zero para as ilhas vulcânicas dos Açores, localizadas nas proximidades da junção de três daquelas placas, a avaliação das potencialidades do GPS no estudo da dinâmica da região e da deriva dos continentes, e a contribuição para a unificação dos Data verticais entre a Europa e a América através das ilhas dos Açores e das Bermudas.
Neste trabalho são discutidos em particular os diferentes aspectos do estabelecimento e processamento da rede local no Arquipélago dos Açores. Usando as efemérides difundidas obteve-se uma precisão interna de cerca de 0.1ppm na medida de distâncias que atingem algumas centenas de quilómetros. É realçada a importância destes resultados para o desenvolvimento de outras áreas científicas de grande interesse para esta região do Atlântico.
ABSTRACT: The TANGO network was established in 1988 with 12 GPS (Global Positioning System) stations located in four of the main tectonic plates: Eurasian, North American, African and Caribbean. Main goals of this project were to establish a zero order network for the Azores volcanic islands, located in the vicinity of the triple junction of those plates, to assess GPS capabilities to support analysis of the dynamics of this region as well as to measure continental drift, and to contribute for vertical Datum unification between Europe and America through the Azores and Bermuda islands. ln this paper we discuss different aspects for the establishment and processing of the local Azores network. Using broadcast ephemeris an internal accuracy at the 0.1ppm level was reached for baselines up to hundreds of kilometers; it is emphasized the importance of those results in the development of scientific areas of major interest for this Region of the Atlantic.
ABSTRACT: The TANGO network was established in 1988 with 12 GPS (Global Positioning System) stations located in four of the main tectonic plates: Eurasian, North American, African and Caribbean. Main goals of this project were to establish a zero order network for the Azores volcanic islands, located in the vicinity of the triple junction of those plates, to assess GPS capabilities to support analysis of the dynamics of this region as well as to measure continental drift, and to contribute for vertical Datum unification between Europe and America through the Azores and Bermuda islands. ln this paper we discuss different aspects for the establishment and processing of the local Azores network. Using broadcast ephemeris an internal accuracy at the 0.1ppm level was reached for baselines up to hundreds of kilometers; it is emphasized the importance of those results in the development of scientific areas of major interest for this Region of the Atlantic.
Description
Keywords
Geodesia Tectónica de Placas Açores Geodesy Global Positioning System (GPS) Plate Tectonics Azores
Citation
BASTOS, Luísa, José OSÓRIO, Herbert LANDAU & Günter HEIN (1991). The Azores global positioning system network. "Arquipélago. Boletim da Universidade dos Açores: Ciências da Natureza", 9: 1-9.