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	Provedor de dados ArchiMer (2) Autor Renard, V. (2) Avedik, Felix (1) Malod, J. (1) Palavra-chave Histoire Ifremer (2) Tipo do documento Text (2) Ano 1974 (1) 1972 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Structure of the barents sea from seismic refraction ArchiMer Renard, V.; Malod, J.. The Barents Sea is underlain by a thick (up to 5 km) sedimentary basin. Seismic refraction has outlined four main velocity discontinuities which have been correlated with geological units on the basis of the geological history of the region. The basin is underlain by a crystalline basement, the nature of which cannot be determined on the basis of seismic velocity alone. Metamorphosed Paleozoic units (velocities around 5-4 km/sec) lie over this basement. Their thickness is not well established but appears to reach 1 or 2 km in some cases. A very distinct and thick (up to 2.5 km) layer (4.1 km/sec) is found almost everywhere and is thought to correspond to a major discontinuity at the end ot the Paleozoic. This discontinuity is followed by a variable... Tipo: Text Palavras-chave: Histoire Ifremer. Ano: 1974 URL: http://archimer.ifremer.fr/doc/1974/publication-5447.pdf Seismic refraction on continental shelves with detectors on sea floor ArchiMer Avedik, Felix; Renard, V.. Seismic refraction at sea and on continental shelves requires most of all a precise positioning of the shooting and receiving stations and a good signal to noise ratio. A new system has been developed using detectors anchored on the sea floor and radio transmission of signal for refraction work on continental shelves. This technique satisfies both requirements. The system has been tested in the western Channel in December 1971. [NOT CONTROLLED OCR] Tipo: Text Palavras-chave: Histoire Ifremer. Ano: 1972 URL: http://archimer.ifremer.fr/doc/1972/publication-5125.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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