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Mostrando ítems 131-140 de 321
Evolução do delta do rio São Francisco - estratigrafia do Quaternário e relações morfodinâmicas
(Instituto de GeociênciasGeologiaPGGEOLOGIABrasil, 2017-02-18)
A arquitetura deposicional do delta do rio São Francisco foi descrita pela primeira vez nesta tese, tendo por base a análise de dados obtidos de furos de sondagem SPT realizados na planície deltaica. Durante o Último Máximo ...
Julia radar studies of electric fields in the equatorial electrojet
(American Geophysical Union, 1997-07)
First results from the JULIA radar at Jicamarca are presented. These include coherent scatter observations of the equatorial electrojet and of 150-km echoes. Interferometry is used to measure the zonal drift rate of kilometer ...
Nonlinear transport in n-III-nitrides: Selective amplification and emission of coherent LO phonons
(Pergamon-elsevier Science LtdOxfordInglaterra, 2006)
Macrobenthic intertidal communities from wave to tide dominated beach environments. A case study in two Brazilian beaches
(Coastal Education & Research Foundation, 2003-03-01)
Modification showed by intertidal macrofaunal communities between two nearby sites that change from a wave to a tide dominated beach environment, was analyzed on the present study. At each site, eleven intertidal sampling ...
The erosive power of the Malvinas Current: Influence of bottom currents on morpho-sedimentary features along the northern Argentine margin (SW Atlantic Ocean)
(Elsevier Science, 2021-06)
Sediment deposits formed mainly under the influence of bottom currents (contourites) are widely used as high-resolution archives for reconstructing past ocean conditions. However, the driving processes of Contourite ...
Spread F - an old equatorial aeronomy problem finally resolved?
(European Geosciences Union (EGU), 2009-05-04)
One of the oldest scientific topics in Equatorial Aeronomy is related to Spread-F. It includes all our efforts to understand the physical mechanisms responsible for the existence of ionospheric F-region irregularities, the ...
Onset conditions for equatorial spread F determined during EQUIS II
(American Geophysical Union, 2005-12-22)
An investigation into the dynamics and layer structure of the postsunset ionosphere prior to the onset of equatorial spread F (ESF) took place during the NASA EQUIS II campaign on Kwajalein Atoll on August 7 and 15, 2004. ...
Rocket in situ observation of equatorial plasma irregularities in the region between E and F layers over Brazil
(European Geosciences Union, 2017-03-16)
A two-stage VS-30 Orion rocket was launched from the equatorial rocket launching station in Alcântara, Brazil, on 8 December 2012 soon after sunset (19:00LT), carrying a Langmuir probe operating alternately in swept and ...