Resumo
The return voyage from the Island of Trindade (Besnard, W., 1951, p. 37-48) to Rio de Janeiro was made on board of a trawling boat, "Vega", and the established route was through the series of banks that occur between the continent and the group of islands Trindade and Martim Vaz. The banks are accurately placed on the map and the deepness of the ocean above them, correctly stated. Dredgings, due to lack of time and inappropriate gear available on board, brought back only samples comparable to those of the insular platform of the island of Trindade, more similar to the collections made nearer the island, and gradually differing from them on the banks located closer to the continent. As is shown in the accompanying schematieal section, the submarine profile is extremely irregular, there being instances of falls of over 2.000 meters in the distance of a few meters. It seems, therefore, reasonable to imagine that there is, between the continent and the island a series of mountains and ridges possibly of eruptive nature. However, the schema is necessarily very incomplete due to the scarcity of the soundings. The voyage was altogether much too short for more than a quick glance, that produced enough material to show that it is an interesting region from several points of view and worth of a more detailed study.
Resultados científicos do cruzeiro do "Baependi" e do "Vega" na Ilha da Trindade. Observações sobre a relevografia da região situada entre a Ilha da Trindade e o Continente
W. Besnard
SUMMARY
The return voyage from the Island of Trindade (Besnard, W., 1951, p. 37-48) to Rio de Janeiro was made on board of a trawling boat, "Vega", and the established route was through the series of banks that occur between the continent and the group of islands Trindade and Martim Vaz.
The banks are accurately placed on the map and the deepness of the ocean above them, correctly stated. Dredgings, due to lack of time and inappropriate gear available on board, brought back only samples comparable to those of the insular platform of the island of Trindade, more similar to the collections made nearer the island, and gradually differing from them on the banks located closer to the continent.
As is shown in the accompanying schematieal section, the submarine profile is extremely irregular, there being instances of falls of over 2.000 meters in the distance of a few meters. It seems, therefore, reasonable to imagine that there is, between the continent and the island a series of mountains and ridges possibly of eruptive nature. However, the schema is necessarily very incomplete due to the scarcity of the soundings.
The voyage was altogether much too short for more than a quick glance, that produced enough material to show that it is an interesting region from several points of view and worth of a more detailed study.
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BIBLIOGRAFIA
BESNARD, W., 1951, Resultados Científicos do cruzeiro do "Baependi" e do "Vega " à Ilha da Trindade. Contribuição para o conhecimento da plataforma insular da Ilha da Trindade. Boi. Inst. Paulista de Oceanografia, vol. II, n.º 2, p. 37-48. São Paulo.
Diretoria de Hidrografia e Navegação. Ministério da Marinha. Carta do Brasil - Costa Leste, de Recife ao Rio de Janeiro, 30 de junho de 1948. Rio de Janeiro.
Clique para ampliar
- Diretoria de Hidrografia e Navegação. Ministério da Marinha. Carta do Brasil - Costa Leste, de Recife ao Rio de Janeiro, 30 de junho de 1948. Rio de Janeiro.
Datas de Publicação
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Publicação nesta coleção
15 Jun 2012 -
Data do Fascículo
Dez 1952
