Comparative studies between linear-core fluxgate magnetometer and ring-core fluxgate magnetometer data record in the South Atlantic Magnetic Anomaly region
- Paper number
IAC-08.B1.I.6
- Author
Mr. Cassio Espindola Antunes, Southern Regional Space Research Center - CRS/CIE/INPE - MCT, in collaboration with the Space Science Laboratory of Santa Maria LACESM/CT/UFSM, Brazil
- Coauthor
Dr. Nelson Jorge Schuch, Southern Regional Space Research Center - CRS/CIE/INPE - MCT, Brazil
- Coauthor
Mr. Josemar Siqueira, Southern Regional Space Research Center - CRS/CIE/INPE - MCT, in collaboration with the Space Science Laboratory of Santa Maria LACESM/CT/UFSM, Brazil
- Coauthor
Dr. Nalin Babulal Trivedi, National Observatory - Brazil, Brazil
- Year
2008
- Abstract
The Earth Magnetic Field variations are studied in different time scales classified since diurnal to secular variations and also micropulsations that have period smaller than 1000 seconds. The geomagnetic data permit investigate these phenomena. Also it can provide important information about the Magnetosphere, the Earth/Sun interaction, as well as events occurring in the Ionosphere which can, for instance, generate disturbances in telecommunications, induce currents in small satellites circuits and also induce currents in power lines or in oil/gas tubes in Earth surface. In the area where it is observed the smallest intensity of the Earth’s magnetic field, the South Atlantic Magnetic Anomaly – SAMA, the effects of a geomagnetic storms increase due the occurrence of charged particle precipitations during these events. To study the behavior and the geomagnetic processes in the SAMA`s proximities we have developed a linear-core fluxgate magnetometer and also a ring-core fluxgate magnetometer at the Southern Regional Space Research Center – CRS/CIE/INPE–MCT in South of Brazil. Both magnetometers have their operation based on the iron magnetic properties of the high permeability core. Varying the magnetic permeability of the nucleus through a high frequency excitation signal it is possible to change the magnetic field density B of the primary bobbin as in the (BxH) Hystereses curve. The sensor coil detects a signal with high harmonic content that has linear relation with the Earth’s Magnetic Field variations in the observed local. This paper has the intention to compare the two electronic circuits used in each sensor and specially the preliminary data and conclusions about experiments performed at the Southern Space Observatory SSO/CRS/INPE – MCT (29ºS, 53ºW) which is located near the center of the SAMA in South of Brazil.
- Abstract document
- Manuscript document
IAC-08.B1.I.6.pdf (🔒 authorized access only).
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