Jairo Francisco Savian
Universidade Federal de Santa Maria
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Publication
Featured researches published by Jairo Francisco Savian.
Revista Brasileira de Geofísica | 2007
Vânia Fátima Andrioli; Ezequiel Echer; Jairo Francisco Savian; Nelson Jorge Schuch
Fast forward interplanetary shocks (FFS) are characterized by positive jump in all interplanetary plasma parameters (solar wind speed, temperature and density) and interplanetary magnetic field. However the fast reverse interplanetary shocks (FRS) are characterized by negative jump in all mentioned parameters except solar wind speed. Observations show that FFS cause positive sudden impulses (SI) while FRS cause negative SI in the H-component of the geomagnetic field. In this work we investigate the SI caused by interplanetary shocks. We use the observed plasma parameters, upstream and downstream, to calculate the variation of dynamic pressure. We observe that the SI amplitude is larger for positive SI than for negative ones, as a consequence of the fact that FFS have larger dynamic pressure variations as compared to FRS.
Revista Brasileira de Geofísica | 2007
Everton Frigo; Jairo Francisco Savian; Marlos da Silva; Alisson Dal Lago; Nalin Babulal Trivedi; Nelson Jorge Schuch
An analysis of geomagnetic storm variations and the count rate of cosmic ray muons recorded at the Brazilian Southern Space Observatory - OES/CRS/INPE-MCT, in SMartinho da Serra, RS during the month of November 2004, is presented in this paper. The geomagnetic measurements are done by a three component low noise fluxgate magnetometer and the count rates of cosmic ray muons are recorded by a Muon Scintilator Telescope - MST, both instruments installed at the Observatory. The fluxgate magnetometer measures variations in the three orthogonal components of Earth magnetic field, H (North-South), D (East-West) and Z (Vertical), with data sampling rate of 0.5 Hz. The Muon Scintilator Telescope records hourly count rates. The arrival of a solar disturbance can be identified by observing the decrease in the muon count rate. The goal of this work is to describe the physical morphology and phenomenology observed during the geomagnetic storm of November 2004, using the H component of the geomagnetic field and vertical channel V of the multi-directional muon detector in South of Brazil.
Revista Brasileira de Geofísica | 2007
Jairo Francisco Savian; Marlos da Silva; Alisson Dal Lago; Ezequiel Echer; Luis Eduardo Antunes Vieira; K. Munakata; Walter D. Gonzalez; Nelson Jorge Schuch
Archive | 2008
Carlos Roberto Braga; Nelson Jorge Schuch; Samuel Martins da Silva; Nikolas Kemmerich; Marcos Vinicius Dias Silveira; Fabricio Deives Kummer; Alisson Dal Lago; Marlos da Silva; K. Munakata; Takao Kuwabara; Chihiro Kato; John W. Bieber; Jairo Francisco Savian
10th International Congress of the Brazilian Geophysical Society & EXPOGEF 2007, Rio de Janeiro, Brazil, 19-23 November 2007 | 2007
Samuel Martins da Silva; Carlos Roberto Braga; Nelson Jorge Schuch; Jairo Francisco Savian; Ezequiel Echer; Fernando L. Guarnieri
Archive | 2006
Carlos Roberto Braga; Jairo Francisco Savian; Marcos da Silva; S. M. da Silva; C. W. da Silva; Alisson Dal Lago; T. Kuwabara; K. Munakata; John W. Bieber; Nelson Jorge Schuch
Archive | 2006
Jairo Francisco Savian; Marcos da Silva; Alisson Dal Lago; Carlos Roberto Braga; C. W. da Silva; L. C. dos Santos; S. M. da Silva; K. Munakata; T. Kuwabara; Nelson Jorge Schuch
Revista Brasileira de Geofísica | 2005
Jairo Francisco Savian; Marlos da Silva; Alisson Dal Lago; K. Munakata; Walter D. Gonzalez; Nelson Jorge Schuch
9th International Congress of the Brazilian Geophysical Society & EXPOGEF, Salvador, Bahia, Brazil, 11-14 September 2005 | 2005
Jairo Francisco Savian; Marlos da Silva; Vânia Fátima Andrioli; Alisson Dal Lago; Ezequiel Echer; Luis Eduardo Antunes Vieira; K. Munakata; G. I. Pugacheva; John W. Bieber; Walter Demetrio Gonzalez Alarcon; Nelson Jorge Schuch
9th International Congress of the Brazilian Geophysical Society & EXPOGEF, Salvador, Bahia, Brazil, 11-14 September 2005 | 2005
Vânia Fátima Andrioli; Jairo Francisco Savian; Ezequiel Echer; Nelson Jorge Schuch