[PDF] Top 20 Rev. Bras. Geof. vol.25 suppl.2
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Rev. Bras. Geof. vol.25 suppl.2
... de Geof´ısica, decidimos organizar uma Edic¸˜ao Especial da Revista Brasileira de Geof´ısica intitulada Low Latitude Aeronomy para reunir alguns dos principais resultados apresentados nos temas abordados no ... See full document
1
Rev. Bras. Geof. vol.25 suppl.2
... density spectrum for gradient driven drift waves with indices in the range of –4.5 to –6.0. At lower altitudes shallower spectra were observed for small-scale irregularities, probably due to col- lisional damping in this ... See full document
15
Rev. Bras. Geof. vol.25 suppl.2
... than the higher ones because the points are closer to each other for lower N I C H (2, 4, 6, 8 and 10) that for higher N I C H (20, 40, 60, 80 and 100). Despite the logarithmic growing (curve of Fig. 4) did not ... See full document
9
Rev. Bras. Geof. vol.25 suppl.2
... Electron Density height profiles estimated from different ty- pes of experiments namely a High Frequency capacitance probe, a Langmuir probe and a Plasma Frequency Probe during the occur[r] ... See full document
14
Rev. Bras. Geof. vol.25 suppl.2
... tuitive) theoretical explanations have been given in the literature on occasions. At high latitude, one explanation that has been ad- vanced is that anomalous diffusion increases with the amplitude of a structure until ... See full document
9
Rev. Bras. Geof. vol.25 suppl.2
... During the October 2003 disturbed period, the storm indu- ced eastward magnetospheric electric field that penetrated to the magnetic equator on the 29/30 and 30/31 nights and intensified the vertical plasma drift, ... See full document
8
Rev. Bras. Geof. vol.25 suppl.2
... The Brazilian Southern Space Observatory is located in the proxi- mities of the center of South Atlantic Magnetic Anomaly – SAMA, that is, the area where the smallest intensity of the Earth’s magnetic field is observed ... See full document
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Rev. Bras. Geof. vol.25 suppl.2
... The authors are grateful to Bartol Research Institute neutron moni- tor program, which is supported by National Science Foundation grant ATM-0000315 and by Centro Regional Sul de Pesquisas Es- paciais, which offers the ... See full document
5
Rev. Bras. Geof. vol.25 suppl.2
... It is well known that energetic cosmic ray intensities are often subject to modulation effects due to interplanetary disturbances such as shocks and ejecta associated with CMEs (Lockwood, 1971; Cane, 1993). Depression of ... See full document
5
Rev. Bras. Geof. vol.25 suppl.2
... The magnetopause is the boundary that separates the region of space where plasmas are dominated by the Earth’s magnetic fi- eld (the magnetosphere) from the region where the interplanetary magnetic field (IMF) ... See full document
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Rev. Bras. Geof. vol.25 suppl.2
... We have developed a simple magnetic field-line integrated con- ductivity model for the Brazilian equatorial E-Region that has pro- duced satisfactory results, but it still has some limitations that if improved could ... See full document
8
Rev. Bras. Geof. vol.25 suppl.2
... Figure 5 shows the nocturnal OH (6-2) band intensity and rotational temperature variations on the night of 11 April, 2005 observed at Cachoeira Paulista by FotAntar-3 and MC2 photo- meter. The temperature measured ... See full document
8
Rev. Bras. Geof. vol.25 suppl.2
... Figure 2 shows the variation in UV-A and UV-B radiation from SSO and Tokyo on sunny days (days of low cloudiness) during the local noon period using spectroradiometers between 2002 and ...of 2 between sum- ... See full document
9
Rev. Bras. Geof. vol.25 suppl.2
... To determine the wave characteristics, the time series of the hourly-average winds were subjected to harmonic analysis. The analysis was performed in two ways. In the first step we obtained the monthly parameters for the ... See full document
7
Rev. Bras. Geof. vol.25 suppl.2
... ABSTRACT. Simultaneous observations of the atmospheric neutral winds in the mesosphere and lower thermosphere (MLT) by meteor radar have been carried out at S˜ao Jo˜ao do Cariri (7.4 ◦ S, 36.5 ◦ W) and Cachoeira Paulista ... See full document
6
Rev. Bras. Geof. vol.25 suppl.2
... in each case show the location of intensity and temperature scans used to determine the amplitude and phase of the wave in each case (see Fig. 7). Simultaneous wind measurements (not shown) have been used to determine ... See full document
10
Rev. Bras. Geof. vol.25 suppl.2
... A numerical study by Teitelbaum et al. (1989) looked at two possible mechanisms for the excitation of the terdiurnal tide: the direct thermal generation by the third harmonic of solar daily cy- cle and dynamical ... See full document
10
Rev. Bras. Geof. vol.25 número2
... de Geof´ısica Rasa do IAG-USP, visando `a obtenc¸˜ao de parˆametros ´otimos de campo para melhorar a caracterizac¸˜ao de interferˆencias normalmente encontradas no ambiente de grandes centros ... See full document
1
Rev. Bras. Geof. vol.25 número1
... Knowing the verti- cal component of the global deformation of the crust, for example the one induced by atmospheric loading, is fundamental for the precise determination of the vertical [r] ... See full document
6
Rev. Bras. Geof. vol.25 número3
... ABSTRACT. The objective of this study was to implement an inversion algorithm in order to estimate shear wave velocities (S) as well as layer densities above and below the reflector by using information from phase ... See full document
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