Zobrazeno 1 - 10
of 288
pro vyhledávání: '"M Brum"'
Autor:
Sukanta Sau, Pedrina Terra, Christiano G. M. Brum, Fabio A. Vargas, Jens Lautenbach, S. Gurubaran
Publikováno v:
Earth and Space Science, Vol 11, Iss 2, Pp n/a-n/a (2024)
Abstract Rotational temperatures in the Mesosphere‐Lower Thermosphere region are estimated by utilizing the OH(6,2) Meinel band nightglow data obtained with an Ebert‐Fastie spectrometer (EFS) operated at Arecibo Observatory (AO), Puerto Rico (18.
Externí odkaz:
https://doaj.org/article/24213a425ca54329b368641e81ae5948
Autor:
A. M. Santos, G. Yang, A. A. Pimenta, C. G. M. Brum, I. S. Batista, J. H. A. Sobral, V. F. Andrioli, P. P. Batista, M. A. Abdu, J. R. Souza, P. K. Manoharan, C. Wang, H. Li, Z. Liu
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
This work presents the contribution of solar atmospheric tides (diurnal, semidiurnal, and terdiurnal modes) to the variability of the parameters critical frequency (foF2) and peak height of the F2-layer (hmF2) in the American sector during the transi
Externí odkaz:
https://doaj.org/article/143648537da249ea93bef0491ebdc1ef
Autor:
Jonas Sousasantos, Josemaria Gomez Socola, Fabiano S. Rodrigues, Richard W. Eastes, Christiano G. M. Brum, Pedrina Terra
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-12 (2023)
Abstract The occurrence of plasma irregularities and ionospheric scintillation over the Caribbean region have been reported in previous studies, but a better understanding of the source and conditions leading to these events is still needed. In Decem
Externí odkaz:
https://doaj.org/article/8c884907f2af4e99b2246eacf6d1cf27
Publikováno v:
Annales Geophysicae, Vol 40, Pp 259-269 (2022)
This work presents the daytime behavior of the intermediate layer (ILs) parameters (the virtual height – h'IL, and the top frequency – ftIL) over the low-latitude region of Cachoeria Paulista (CP, 22.42∘ S; 45∘ W, I: −34.59∘) during the 2
Externí odkaz:
https://doaj.org/article/f1efff73a7684e198428166871050279
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract Optical observations of transient luminous events and remote-sensing of the lower ionosphere with low-frequency radio waves have demonstrated that thunderstorms and lightning can have substantial impacts in the nighttime ionospheric D region
Externí odkaz:
https://doaj.org/article/6b8c5576dda0403f8ed80e49ea235e65
Autor:
Ângela M. Santos, Christiano G. M. Brum, Inez S. Batista, José H. A. Sobral, Mangalathayil A. Abdu, Jonas R. Souza, Rodolfo de Jesus, Periasamy K. Manoharan, Pedrina Terra
Publikováno v:
Atmosphere, Vol 14, Iss 1, p 87 (2022)
The behavior of the Brazilian equatorial ionosphere during the solar minimum periods, 1996 and 2009, which cover the solar cycles 22/23 and 23/24, respectively, is investigated. For this, the F2 layer critical frequency (foF2) and peak height (hmF2)
Externí odkaz:
https://doaj.org/article/fc1c6f52aa864d0b99d4b1eb91794177
Publikováno v:
Annales Geophysicae, Vol 37, Pp 1005-1024 (2019)
In this work, we have performed a study for the first time on the climatology of the intermediate descending layers (ILs) over Brazilian equatorial and low-latitude regions during the extreme solar minimum period of 2009. The result of this study sho
Externí odkaz:
https://doaj.org/article/4610e81a4765416ba3e5b9f4724dc16d
Autor:
Vera M. F. Da Silva, Sannie M. Brum, Daniela Magalhães Drummond de Mello, Rodrigo De Souza Amaral, Waleska Gravena, Elizabeth Campbell, Rayane Da S. Gonçalves, Vanessa Mintzer
Publikováno v:
Latin American Journal of Aquatic Mammals. 18:139-157
In the last decades, knowledge about the biology of the Amazon river dolphin Inia geoffrensis has increased considerably. Accordingly, we present a review of the published literature on this river dolphin, with a focus on topics with the most advance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec10a2e9456a5c1e1aa942be7b4a9cb1
https://doi.org/10.5597/lajam00298
https://doi.org/10.5597/lajam00298
Autor:
Ângela M. Santos, Christiano G. M. Brum, Inez S. Batista, José H. A. Sobral, Mangalathayil A. Abdu, Jonas R. Souza
Publikováno v:
Annales Geophysicae. 40:259-269
This work presents the daytime behavior of the intermediate layer (ILs) parameters (the virtual height – h'IL, and the top frequency – ftIL) over the low-latitude region of Cachoeria Paulista (CP, 22.42∘ S; 45∘ W, I: −34.59∘) during the 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e119156e64dc9d467804e15362360a8c
https://doi.org/10.5194/angeo-40-259-2022
https://doi.org/10.5194/angeo-40-259-2022
Autor:
Adilson C. Paula Junior, Cláudia Jacinto, Thaís M. Oliveira, Antonio E. Polisseni, Fabio M. Brum, Elisabete R. Teixeira, Ricardo Mateus
Publikováno v:
Crystals, Vol 11, Iss 2, p 209 (2021)
The search for environmental preservation and conservation of natural resources gives rise to new concepts and viable technical solutions on the path to sustainable development. In this context, this study’s main objective is to analyse the influen
Externí odkaz:
https://doaj.org/article/ba01460aa632404a8710473ecdd8ab74