Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados ArchiMer (2) Autor Eriş, Kadir K (1) Lund, Steve (1) Makaroğlu, Özlem (1) Nowaczyk, Norbert R (1) Schwartz, Martha (1) Stott, Lowell (1) Çağatay, M Namık (1) Mais... Palavra-chave Geomagnetic excursions (2) Palaeointensity (2) Palaeomagnetic secular variation (2) Marine magnetics and palaeomagnetics (1) Palaeomagnetism (1) Tipo do documento Text (2) Ano 2020 (1) 2017 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última High-resolution palaeomagnetic record from Sea of Marmara sediments for the last 70 ka ArchiMer Makaroğlu, Özlem; Nowaczyk, Norbert R; Eriş, Kadir K; Çağatay, M Namık. Magnetostratigraphic and geochemical analyses were performed on two sediment cores recovered from the Sea of Marmara to investigate geomagnetic field variations over the last 70 ka. A chronology for each of the two cores was developed from eight AMS 14C datings, tephrochronology, and tuning of Ca concentrations with stadials and interstadials observed in Greenland ice core oxygen isotope data. Based on the age models, cores MD01–2430 and MRS-CS19 reach back to 70 ka and 32 ka, respectively. High average sedimentation rates of 43 cm/kyr for core MD01–2430 and 68 cm/kyr for core MRS-CS19 allow high-resolution reconstruction of geomagnetic field variations for the Sea of Marmara. Mineral magnetic properties are sensitive to glacioeustatic sea-level changes... Tipo: Text Palavras-chave: Geomagnetic excursions; Marine magnetics and palaeomagnetics; Palaeointensity; Palaeomagnetic secular variation; Palaeomagnetism. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00632/74416/74131.pdf Long-term palaeomagnetic secular variation and excursions from the western Equatorial Pacific Ocean (MIS2-4) ArchiMer Lund, Steve; Schwartz, Martha; Stott, Lowell. New palaeomagnetic results are presented for the Pleistocene (MIS2-4) portion of deep-sea core MD98-2181 (MD81; Devao Gulf, Philippine Islands). MD81 is the highest resolution (similar to 50 cm ky-1) palaeomagnetic secular variation (PSV) record for similar to 12-70 ka ever recovered from equatorial latitudes (+/- 15 degrees.). Magnetic studies indicate that MD81 has a stable natural remanence with directional uncertainties (MAD angles) typically less than 3 degrees. We have also recovered a relative palaeointensity estimate from these sediments based on normalization to isothermal remanence. We have correlated our relative palaeointensity record with highresolution relative palaeointensity records from the North Atlantic Ocean. The MD81 ages are always... Tipo: Text Palavras-chave: Geomagnetic excursions; Palaeointensity; Palaeomagnetic secular variation. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00420/53156/55308.pdf Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco